MITSUBISHI ELECTRIC MUZ-LN25VG Inverter Air Conditioner Owner’s Manual
- June 9, 2024
- Mitsubishi Electric
Table of Contents
MUZ-LN25VG Inverter Air Conditioner
Revision B:
· MUZ-LN25VG2 – E1 , ET1 , MUZ-LN35VG2 – E1 , ET1 , and MUZ-LN50VG2 – E1 , ET1
have been added.
OBH767A is void.
OUTDOOR UNIT
SERVICE MANUAL
HFC
utilized
R32
No. OBH767
REVISED EDITION-B
Models
MUZ-LN25VG – E1 , ER1 , ET1 MUZ-LN35VG – E1 , ER1 , ET1 MUZ-LN50VG – E1 , ER1
, ET1 MUZ-LN60VG – E1 , ER1 , ET1 MUZ-LN25VG2 – E1 , ET1 MUZ-LN35VG2 – E1 ,
ET1 MUZ-LN50VG2 – E1 , ET1
Indoor unit service manual MSZ-LN·VGW/V/B/R Series (OBH766)
MUZ-LN25VG MUZ-LN35VG
CONTENTS
1. TECHNICAL CHANGES ··································· 2 2. SERVICING
PRECAUTIONS FOR UNITS
USING REFRIGERANT R32····························· 3 3. PART NAMES AND
FUNCTIONS····················· 5 4.
SPECIFICATION················································ 6 5. NOISE
CRITERIA CURVES ······························ 9 6. OUTLINES AND DIMENSIONS
·······················11 7. WIRING
DIAGRAM·········································· 14 8. REFRIGERANT SYSTEM
DIAGRAM ············· 17 9. PERFORMANCE CURVES ·····························
19 10. ACTUATOR CONTROL··································· 38 11. SERVICE
FUNCTIONS···································· 39 12.
TROUBLESHOOTING····································· 40 13. DISASSEMBLY
INSTRUCTIONS···················· 62
PARTS CATALOG (OBB767)
Use the specified refrigerant only
Never use any refrigerant other than that specified.
Doing so may cause a burst, an explosion, or fire when the unit is being used,
serviced, or disposed of. Correct refrigerant is specified in the manuals and
on the spec labels provided with our products. We will not be held responsible
for mechanical failure, system malfunction, unit breakdown or accidents caused
by failure to follow the instructions.
Revision A:
· 9-2. CAPACITY AND INPUT CORRECTION BY OPERATIONAL FREQUENCY OF COMPRESSOR
has been modified. · Resistance value of the R.V. coil for MUZ-LN25/35/50VG-
E1 , ER1 , ET1 has been corrected (12-4.).
Revision B:
· MUZ-LN25VG2 – E1 , ET1 , MUZ-LN35VG2 – E1 , ET1 , and MUZ-LN50VG2 – E1 , ET1
have been added.
1 TECHNICAL CHANGES
MUZ-LN25VG – E1 , ER1 , ET1 MUZ-LN35VG – E1 , ER1 , ET1 MUZ-LN50VG – E1 , ER1
, ET1 MUZ-LN60VG – E1 , ER1 , ET1
1. New model
MUZ-LN25VG – E1 , ET1
MUZ-LN25VG2 – E1 , ET1
MUZ-LN35VG – E1 , ET1
MUZ-LN35VG2 – E1 , ET1
MUZ-LN50VG – E1 , ET1
MUZ-LN50VG2 – E1 , ET1
1. The heat exchanger has been changed.
2. The refrigerant amount has been changed.
OBH767B
2
2 SERVICING PRECAUTIONS FOR UNITS USING REFRIGERANT R32
Servicing precautions for units using refrigerant R32 WARNING
This unit uses a flammable refrigerant. If refrigerant leaks and comes in
contact with fire or heating part, it will create harmful gas and there is
risk of fire.
Do not use means to accelerate the defrosting process or to clean, other than
those recommended by the manufacturer.
The appliance shall be stored in a room without continuously operating
ignition sources (for example: open flames, an operating gas appliance or an
operating electric heater.) Do not pierce or burn.
Be aware that refrigerants may not contain an odor. Pipe-work shall be
protected from physical damage. The installation of pipe-work shall be kept to
a minimum. Compliance with national gas regulations shall be observed.
Keep any required ventilation openings clear of obstruction. Servicing shall
be performed only as recommended by the manufacturer. The appliance shall be
stored so as to prevent mechanical damage from occurring.
Basic work procedures are the same as those for conventional units using
refrigerant R410A. However, pay careful attention to the following points.
1. Information on servicing Checks on the Area
Prior to beginning work on systems containing flammable refrigerants, safety
checks are necessary to ensure that the risk of ignition is minimized. Work
Procedure Work shall be undertaken under a controlled procedure so as to
minimize the risk of a flammable gas or vapor being present while the work is
being performed.
General Work Area All maintenance staff and others working in the local area
shall be instructed on the nature of work being carried out. Work in confined
spaces shall be avoided.
The area around the workspace shall be sectioned off. Ensure that the
conditions within the area have been made safe by control of flammable
material.
Checking for Presence of Refrigerant The area shall be checked with an
appropriate refrigerant detector prior to and during work, to ensure the
technician is aware of potentially toxic or flammable
atmospheres. Ensure that the leak detection equipment being used is suitable
for use with all applicable refrigerants, i.e. non-sparking, adequately sealed
or intrinsically safe.
Presence of Fire Extinguisher If any hot work is to be conducted on the
refrigeration equipment or any associated parts, appropriate fire
extinguishing equipment shall be available to hand. Have a dry powder or CO2
fire extinguisher adjacent to the charging area. No Ignition Sources No person
carrying out work in relation to a refrigeration system which involves
exposing any pipe work shall use any sources of ignition in such a manner that
it may lead to the risk of fire or explosion. All possible ignition sources,
including cigarette smoking, should be kept sufficiently far away from the
site of installation, repairing, removing and disposal, during which
refrigerant can possibly be released to the surrounding space. Prior to work
taking place, the area around the equipment is to be surveyed to make sure
that there are no flammable hazards or ignition risks. “No Smoking” signs
shall be displayed. Ventilated Area Ensure that the area is in the open or
that it is adequately ventilated before breaking into the system or conducting
any hot work. A degree of ventilation shall
continue during the period that the work is carried out. The ventilation
should safely disperse any released refrigerant and preferably expel it
externally into the
atmosphere.
Checks on the Refrigeration Equipment Where electrical components are being
changed, they shall be fit for the purpose and to the correct specification.
At all times the manufacturer’s maintenance
and service guidelines shall be followed. If in doubt, consult the
manufacturer’s technical department for assistance. The following checks shall
be applied to installations using flammable refrigerants:
· The charge size is in accordance with the room size within which the
refrigerant containing parts are installed. · The ventilation machinery and
outlets are operating adequately and are not obstructed. · If an indirect
refrigerating circuit is being used, the secondary circuit shall be checked
for the presence of refrigerant. · Marking to the equipment continues to be
visible and legible. Markings and signs that are illegible shall be corrected.
· Refrigeration pipe or components are installed in a position where they are
unlikely to be exposed to any substance which may corrode refrigerant
containing
components, unless the components are constructed of materials which are
inherently resistant to being corroded or are suitably protected against being
corroded.
Checks on Electrical Devices
Repair and maintenance to electrical components shall include initial safety
checks and component inspection procedures. If a fault exists that could
compromise safety, then no electrical supply shall be connected to the circuit
until it is satisfactorily dealt with. If the fault cannot be corrected
immediately but it is necessary to continue operation, an adequate temporary
solution shall be used. This shall be reported to the owner of the equipment
so all parties are advised.
Initial safety checks shall include that: · capacitors are discharged: this
shall be done in a safe manner to avoid possibility of sparking; · no live
electrical components and wiring are exposed while charging, recovering or
purging the system; · there is continuity of earth bonding
2. Repairs to Sealed Components During repairs to sealed components, all electrical supplies shall be disconnected from the equipment being worked upon prior to any removal of sealed covers, etc. If it is absolutely necessary to have an electrical supply to equipment during servicing, then a permanently operating form of leak detection shall be located at the most critical point to warn of a potentially hazardous situation. Particular attention shall be paid to the following to ensure that by working on electrical components, the casing is not altered in such a way that the level of protection is affected. This shall include damage to cables, excessive number of connections, terminals not made to original specification, damage to seals, incorrect fitting of glands, etc. Ensure that the apparatus is mounted securely. Ensure that seals or sealing materials have not degraded to the point that they no longer serve the purpose of preventing the ingress of flammable atmospheres. Replacement parts shall be in accordance with the manufacturer’s specifications.
3. Repair to intrinsically Safe Components Do not apply any permanent
inductive or capacitance loads to the circuit without ensuring that this will
not exceed the permissible voltage and current permitted
for the equipment in use. Intrinsically safe components are the only types
that can be worked on while live in the presence of a flammable atmosphere.
The test apparatus shall be at the correct rating. Replace components only
with parts specified by the manufacturer. Other parts may result in the
ignition of refrigerant in the atmosphere from a leak.
4. Cabling Check that cabling will not be subject to wear, corrosion, excessive pressure, vibration, sharp edges or any other adverse environmental effects. The check shall also take into account the effects of aging or continual vibration from sources such as compressors or fans.
OBH767B
3
5. Detection of Flammable Refrigerants Under no circumstances shall potential
sources of ignition be used in the searching for or detection of refrigerant
leaks. A halide torch (or any other detector using a naked flame) shall not be
used.
6. Leak Detection Methods Electronic leak detectors may be used to detect
refrigerant leaks but, in the case of flammable refrigerants, the sensitivity
may not be adequate, or may need re-calibration. (Detection equipment shall be
calibrated in a refrigerant-free area.) Ensure that the detector is not a
potential source of ignition and is suitable for the refrigerant used. Leak
detection equipment shall be set at a percentage of the LFL of the refrigerant
and shall be calibrated to the refrigerant employed, and the appropriate
percentage of gas (25 % maximum) is confirmed. Leak detection fluids are
suitable for use with most refrigerants but the use of detergents containing
chlorine shall be avoided as the chlorine may react with the refrigerant and
corrode the copper pipe-work. If a leak is suspected, all naked flames shall
be removed/extinguished. If a leakage of refrigerant is found which requires
brazing, all of the refrigerant shall be recovered from the system, or
isolated (by means of shut off valves) in a part of the system remote from the
leak. For appliances containing flammable refrigerants, oxygen free nitrogen
(OFN) shall then be purged through the system both before and during the
brazing process.
7. Removal and Evacuation When breaking into the refrigerant circuit to make
repairs – or for any other purpose conventional procedures shall be used.
However, for flammable refrigerants it is important that best practice is
followed since flammability is a consideration. The following procedure shall
be adhered to: remove refrigerant purge the circuit with inert gas evacuate
purge again with inert gas open the circuit by cutting or brazing. The
refrigerant charge shall be recovered into the correct recovery cylinders. For
appliances containing flammable refrigerants, the system shall be “flushed”
with OFN to render the unit safe. This process may need to be repeated several
times. Compressed air or oxygen shall not be used for purging refrigerant
systems. For appliances containing flammable refrigerants, flushing shall be
achieved by breaking the vacuum in the system with OFN and continuing to fill
until the working pressure is achieved, then venting to atmosphere, and
finally pulling down to a vacuum. This process shall be repeated until no
refrigerant is within the system. When the final OFN charge is used, the
system shall be vented down to atmospheric pressure to enable work to take
place. This operation is absolutely vital if brazing operations on the pipe-
work are to take place. Ensure that the outlet for the vacuum pump is not
close to any ignition sources and that ventilation is available.
8. Charging Procedures In addition to conventional charging procedures, the
following requirements shall be followed: Ensure that contamination of
different refrigerants does not occur when using charging equipment. Hoses or
lines shall be as short as possible to minimize the amount of refrigerant
contained in them. Cylinders shall be kept upright. Ensure that the
refrigeration system is earthed prior to charging the system with refrigerant.
Label the system when charging is complete (if not already). Extreme care
shall be taken not to overfill the refrigeration system. Prior to recharging
the system, it shall be pressure-tested with the appropriate purging gas. The
system shall be leak-tested on completion of charging but prior to
commissioning. A follow up leak test shall be carried out prior to leaving the
site.
9. Decommissioning Before carrying out this procedure, it is essential that
the technician is completely familiar with the equipment and all its detail.
It is recommended good practice that all refrigerants are recovered safely.
Prior to the task being carried out, an oil and refrigerant sample shall be
taken in case analysis is required prior to reuse of reclaimed refrigerant. It
is essential that electrical power is available before the task is commenced.
a) Become familiar with the equipment and its operation. b) Isolate system
electrically. c) Before attempting the procedure, ensure that: – mechanical
handling equipment is available, if required, for handling refrigerant
cylinders; – all personal protective equipment is available and being used
correctly; – the recovery process is supervised at all times by a competent
person; – recovery equipment and cylinders conform to the appropriate
standards. d) Pump down refrigerant system, if possible. e) If a vacuum is not
possible, make a manifold so that refrigerant can be removed from various
parts of the system. f) Make sure that cylinder is situated on the scales
before recovery takes place. g) Start the recovery machine and operate in
accordance with manufacturer’s instructions. h) Do not overfill cylinders. (no
more than 80 % volume liquid charge). i) Do not exceed the maximum working
pressure of the cylinder, even temporarily. j) When the cylinders have been
filled correctly and the process completed, make sure that the cylinders and
the equipment are removed from site promptly and all isolation valves on the
equipment are closed off. k) Recovered refrigerant shall not be charged into
another refrigeration system unless it has been cleaned and checked.
10. Labeling Equipment shall be labeled stating that it has been de-
commissioned and emptied of refrigerant. The label shall be dated and signed.
For appliances containing flammable refrigerants, ensure that there are labels
on the equipment stating the equipment contains flammable refrigerant.
11. Recovery When removing refrigerant from a system, either for servicing or
decommissioning, it is recommended good practice that all refrigerants are
removed safely. When transferring refrigerant into cylinders, ensure that only
appropriate refrigerant recovery cylinders are employed. Ensure that the
correct number of cylinders for holding the total system charge are available.
All cylinders to be used are designated for the recovered refrigerant and
labeled for that refrigerant (i.e. special cylinders for the recovery of
refrigerant). Cylinders shall be complete with pressure-relief valve and
associated shut-off valves in good working order. Empty recovery cylinders are
evacuated and, if possible, cooled before recovery occurs. The recovery
equipment shall be in good working order with a set of instructions concerning
the equipment that is at hand and shall be suitable for the recovery of all
appropriate refrigerants including, when applicable, flammable refrigerants.
In addition, a set of calibrated weighing scales shall be available and in
good working order. Hoses shall be complete with leak-free disconnect
couplings and in good condition. Before using the recovery machine, check that
it is in satisfactory working order, has been properly maintained and that any
associated electrical components are sealed to prevent ignition in the event
of a refrigerant release. Consult manufacturer if in doubt. The recovered
refrigerant shall be returned to the refrigerant supplier in the correct
recovery cylinder, and the relevant waste transfer note arranged. Do not mix
refrigerants in recovery units and especially not in cylinders. If compressors
or compressor oils are to be removed, ensure that they have been evacuated to
an acceptable level to make certain that flammable refrigerant does not remain
within the lubricant. The evacuation process shall be carried out prior to
returning the compressor to the suppliers. Only electric heating to the
compressor body shall be employed to accelerate this process. When oil is
drained from a system, it shall be carried out safely.
OBH767B
4
3 PART NAMES AND FUNCTIONS
MUZ-LN25VG MUZ-LN25VG2 MUZ-LN35VG MUZ-LN35VG2
Air inlet (Back and side)
Piping Air outlet Drain hose
MUZ-LN50VG MUZ-LN50VG2
Drain outlet
MUZ-LN60VG
Air inlet (Back and side)
Piping Air outlet Drain hose
Drain outlet
ACCESSORIES
Model Drain socket
MUZ-LN25VG MUZ-LN35VG MUZ-LN50VG MUZ-LN60VG
MUZ-LN25VG2 MUZ-LN35VG2 MUZ-LN50VG2
1
Air inlet (Back and side)
Piping Drain hose Air outlet
Drain outlet
OBH767B
5
4 SPECIFICATION
Outdoor model
MUZ-LN25VG MUZ-LN25VG2 MUZ-LN35VG MUZ-LN35VG2
Power supply
Single phase, 230 V, 50 Hz
Capacity Rated (Min.-Max.)
Cooling
2.5 (1.0 – 3.5) 2.5 (1.0 – 3.5) 3.5 (0.8 – 4.0) 3.5 (0.8 – 4.0)
kW
Heating
3.2 (0.8 – 5.4) 3.2 (0.7 – 5.4) 4.0 (1.0 – 6.3) 4.0 (0.9 – 6.3)
Breaker Capacity
A
10
10
10
10
Power input 1 (Set)
Cooling W
485
485
820
820
Heating
580
600
800
820
Electrical data
Cooling
Running current 1 (Set)
A
2.5
2.7
3.9
3.8
Heating
3.0
3.4
4.0
3.8
Power factor 1 (Set)
Cooling %
84
78
91
93
Heating
84
76
86
93
Starting current 1 (Set)
A
3.0
3.4
4.0
3.8
Coefficient of performance (COP) 1 (Set)
Cooling Heating
5.15
5.15
4.27
4.27
5.52
5.33
5.00
4.88
Model
KVB073FYXMC KVB073FYXMC SVB092FBAMT SVB092FBAMT
Output
W
470
470
660
660
Compressor
Cooling
2.03
2.24
3.41
3.32
Current 1
A
Heating
2.50
2.95
3.48
3.32
Refrigeration oil (Model)
L
0.27 (FW68S) 0.27 (FW68S) 0.35 (FW68S) 0.35 (FW68S)
Model
RC0J50-RB RC0J50-NC RC0J50-RB RC0J50-NC
Fan motor
Cooling
0.26
0.21
0.26
0.23
Current 1
A
Heating
0.22
0.26
0.25
0.26
Dimensions W × H × D
mm 800 × 550 × 285 800 × 550 × 285 800 × 550 × 285 800 × 550 × 285
Weight
kg
35
33
35
34
Dehumidification
Cooling
L/h
0.1
0.1
0.5
0.5
Cooling
High Low
2,124 978
2,058 984
2,124 978
2,058 984
Airflow 1
High
m3/h
2,028
2,058
2,028
2,058
Heating
Med.
1,734
1,776
1,734
1,776
Special remarks
Low
1,302
1,356
1,302
1,356
Sound level 1
Cooling Heating
46 dB(A)
49
46 49
49 50
49 50
Cooling
High Low
940
940
940
940
460
490
460
490
Fan speed
High
rpm
900
940
900
940
Heating
Med.
780
820
780
820
Low
600
640
600
640
Fan speed regulator
3
3
3
3
Refrigerant filling capacity (R32)
kg
1.00
0.8
1.00
0.85
NOTE: Test conditions are based on ISO 5151. Cooling: Indoor Dry-bulb temperature 27°C Wet-bulb temperature 19°C Outdoor Dry-bulb temperature 35°C Wet-bulb temperature 24°C Heating: Indoor Dry-bulb temperature 20°C Outdoor Dry-bulb temperature 7°C Wet-bulb temperature 6°C 1 Measured under rated operating frequency.
OBH767B
6
Outdoor model
MUZ-LN50VG
MUZ-LN50VG2
MUZ-LN60VG
Power supply
Capacity Rated (Min. – Max.)
Cooling Heating
kW
Breaker Capacity
A
5.0 (1.0 – 6.0) 6.0 (1.0 – 8.2)
16
Single phase, 230 V, 50 Hz 5.0 (1.0 – 6.0) 6.0 (1.0 – 8.2) 16
Power input 1 (Set)
Cooling Heating
W
1,380 1,480
1,380 1,480
Electrical data
Running current 1 (Set)
Cooling Heating
A
6.3 6.8
6.3 6.8
Power factor 1 (Set)
Starting current 1 (Set) Coefficient of performance (COP) 1 (Set)
Model Output
Cooling Heating
%
A
Cooling
Heating
W
95 94 6.8
3.62 4.05 SVB130FBBMT 900
95 94 6.8
3.62 4.05 SVB130FBBMT 900
Compressor
Current 1
Cooling Heating
A
5.73 6.18
5.73 6.18
Refrigeration oil (Model)
L
0.35 (FW68S)
0.35 (FW68S)
Fan motor
Model
Current 1
Cooling Heating
A
RC0J50-RA 0.29 0.29
RC0J50-RA 0.29 0.29
Dimensions W × H × D Weight
Dehumidification
mm
kg
Cooling
L/h
800 × 714 × 285 40 1.7
800 × 714 × 285 40 1.7
Airflow 1
Cooling Heating
Sound level 1
High Low High Med. Low Cooling Heating
m3/h dB(A)
2,748 1,320 2,622 2,238 1,704
51 54
2,748 1,320 2,622 2,238 1,704
51 54
Special remarks
Cooling
High Low
940
940
490
490
Fan speed
High
rpm
900
900
Heating
Med.
780
780
Low
610
610
Fan speed regulator
3
3
Refrigerant filling capacity (R32)
kg
1.25
1.25
NOTE: Test conditions are based on ISO 5151. Cooling: Indoor Dry-bulb temperature 27°C Wet-bulb temperature 19°C Outdoor Dry-bulb temperature 35°C Wet-bulb temperature 24°C Heating: Indoor Dry-bulb temperature 20°C Outdoor Dry-bulb temperature 7°C Wet-bulb temperature 6°C 1 Measured under rated operating frequency.
6.1 (1.4 – 6.9) 6.8 (1.8 – 9.3)
16
1,790 1,810
7.9 7.9 98 99 7.9 3.41 3.76 SVB172FCKMT 1,200 6.70 6.69 0.40 (FW68S) RC0J60-BC
0.84 0.84 840 × 880 × 330 55 2.2 3,006 1,716
3,006 2,892 2,280
55 55 840 450 840 810 650 3 1.45
OBH767B
7
Specifications and rated conditions of main electric parts
Item Smoothing capacitor
Diode module
Model
(C62, C63) (C61, C62, C63)
(DB61) (DB65)
MUZ-LN25VG
MUZ-LN35VG
600 µF/ 620 µF 420 V –
15 A 600 V 25A 600V
Fuse Power module Expansion valve coil
(F701, F801, F901) (IC700) (IC932) (LEV)
T3.15AL250V 15 A 600 V
5 A 600 V 12 V DC
Reactor
Switching power transistor
(L61) (Q821)
23 mH 30 A 600 V
Circuit protection Terminal block
Relay
(PTC64, PTC65) (TB1) (X63) (X64)
33 5 P 3 A 250 V 20 A 250 V
(X69)
10 A 230 V
R.V. coil
(21S4)
220-240 V AC
Specifications and rated conditions of main electric parts
Item Smoothing capacitor
Model
(C62, C63) (C61, C62, C63)
MUZ-LN25VG2
MUZ-LN35VG2
600 µF/ 620 µF 420 V –
Diode module Fuse Power module
(DB61) (DB65) (F701, F801, F901) (IC700) (IC932)
15 A 600 V 25 A 600 V
T3.15AL250V 15 A 600 V
5 A 600 V
Expansion valve coil
Reactor Switching power transistor
(LEV) (L61)
(Q821)
12 V DC 23 mH
30 A 600 V
Circuit protection Terminal block
(PTC64, PTC65) (TB1) (X63)
33 5 P 3 A 250 V
Relay R.V. coil
(X64) (X69) (21S4)
20 A 250 V 10 A 230 V 220-240 V AC
Specifications and rated conditions of main electric parts
Item
Smoothing capacitor
Model (CB1, CB2, CB3)
Fuse
(F601, F880, F901)
Switching power transistor
(Q3A, Q3B)
Power module
(IC932) (IC700)
Expansion valve coil
(LEV)
Reactor
(L)
Diode
(D3A, D3B)
Diode module
(DB41A, DB41B)
Circuit protection
(PTC64, PTC65)
Terminal block
(TB1, TB2)
(X64)
(X65)
Relay
(X69)
(X601)
(X602)
R.V. coil
(21S4)
MUZ-LN60VG
560 µF 450 V
T3.15AL250 V
21 A 650 V
5 A 600 V 20 A 600 V
12 V DC 282 µH 20 A 600 V 20 A 600 V
33 3 P 20 A 250 V 20 A 250 V 10 A 250 V 3 A 250 V 3 A 250 V 220-240 V AC
OBH767B
8
MUZ-LN50VG –
600 µF/ 620 µF 420 V 25 A 600 V 20 A 600 V
MUZ-LN50VG2 –
600 µF/ 620 µF 420 V 25 A 600 V 20 A 600 V
5 NOISE CRITERIA CURVES
MUZ-LN25VG
90
FUNCTION SPL(dB(A))
COOLING
46
HEATING
49
LINE
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
80
70
NC-70
60
NC-60
50
NC-50
40
NC-40
30
NC-30
20
NC-10
NC-20
10 63 125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
MUZ-LN25VG2
90
FUNCTION SPL(dB(A))
COOLING
46
HEATING
49
LINE
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
80
70
NC-70
60
NC-60
50
NC-50
40
NC-40
30
NC-30
20
NC-10
NC-20
10 63 125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
MUZ-LN35VG
90
FUNCTION SPL(dB(A))
COOLING
49
HEATING
50
LINE
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
80
70
NC-70
60
NC-60
50
NC-50
40
NC-40
30
NC-30
20
NC-10
NC-20
10 63 125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
MUZ-LN35VG2
90
FUNCTION SPL(dB(A))
COOLING
49
HEATING
50
LINE
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
80
70
NC-70
60
NC-60
50
NC-50
40
NC-40
30
NC-30
20
NC-10
NC-20
10 63 125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
OBH767B
9
MUZ-LN50VG MUZ-LN50VG2
FUNCTION SPL(dB(A))
COOLING
51
HEATING
54
LINE
90
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
80
70
NC-70
60
NC-60
50
NC-50
40
NC-40
30
NC-30
20
NC-10
NC-20
10 63 125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
MUZ-LN60VG
90
FUNCTION SPL(dB(A))
COOLING
55
HEATING
55
LINE
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
80
70
NC-70
60
NC-60
50
NC-50
40
NC-40
30
NC-30
20
NC-10
NC-20
10 63 125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
Test conditions Cooling: Dry-bulb temperature 35°C Heating: Dry-bulb
temperature 7°C Wet-bulb temperature 6°C OUTDOOR UNIT
1 m MICROPHONE
OBH767B
10
6 OUTLINES AND DIMENSIONS
MUZ-LN25VG MUZ-LN35VG MUZ-LN25VG2 MUZ-LN35VG2
Unit: mm
OBH767B
11
MUZ-LN50VG MUZ-LN50VG2
Unit: mm
OBH767B
12
MUZ-LN60VG
330 50
417.5 Air in
Air in 175
Air out 500
840 109
360 Clear *1
REQUIRED SPACE
*1 500 mm or more when front
and sides of the unit are clear
Drain hole 42 40
100 mm or more
Unit: mm
100 mm or more
2-holes 10 21 81
5o0r0mmomre *2
350 mm or more
*2 When any 2 sides of left, right and rear of the unit are clear
Service panel
Liquid refrigerant pipe joint Refrigerant pipe (flared) Ø 6.35
880 452
35 44
164.5 99.5
Gas refrigerant pipe joint Refrigerant pipe (flared) Ø 12.7 195
OBH767B
13
7 WIRING DIAGRAM
MUZ-LN25VG MUZ-LN35VG
MUZ-LN25VG2 MUZ-LN35VG2
OBH767B
14
MUZ-LN50VG MUZ-LN50VG2
OBH767B
15
MUZ-LN60VG
OBH767B
16
8 REFRIGERANT SYSTEM DIAGRAM
MUZ-LN25VG MUZ-LN35VG MUZ-LN25VG2 MUZ-LN35VG2
Refrigerant pipe ø9.52 (with heat insulator)
Muffler
Stop valve
Flared connection
Unit: mm
4-way valve
Discharge
temperature
thermistor RT62
Muffler Compressor
Outdoor heat exchanger
Defrost thermistor RT61
Outdoor heat exchanger temperature thermistor RT68 Ambient temperature thermistor RT65
Flared connection
Stop valve
Capillary tube LEV
(with strainar) ø4.0×ø2.4×240
Refrigerant pipe ø6.35 (with heat insulator)
Strainer #100
Strainer #100 R.V. coil heating ON cooling OFF Refrigerant flow in cooling Refrigerant flow in heating
MUZ-LN50VG MUZ-LN50VG2
Unit: mm
Refrigerant pipe ø9.52 (with heat insulator)
Muffler
Stop valve
Flared connection
4-way valve
Discharge
temperature
thermistor RT62
Muffler Compressor
Outdoor heat exchanger
Defrost thermistor RT61
Outdoor heat exchanger temperature thermistor RT68 Ambient temperature thermistor RT65
Capillary tube ø3.0×ø2.0×210
Strainer #100
Flared connection
Stop valve
Capillary tube LEV
(with strainar) ø4.0×ø2.4×240
Refrigerant pipe ø6.35 (with heat insulator)
Strainer #100
R.V. coil heating ON cooling OFF Refrigerant flow in cooling Refrigerant flow in heating
OBH767B
17
MUZ-LN60VG
Refrigerant pipe ø12.7 (with heat insulator)
4-way valve
Flared connection
Stop valve
Discharge temperature thermistor RT62
Unit: mm
Defrost thermistor RT61
Outdoor heat exchanger
Ambient temperature thermistor RT65
Compressor
Flared connection
Strainer #100
Capillary tube ø4.0×ø2.4×100
LEV
Stop valve
Muffler
Strainer #100
Outdoor heat exchanger temperature thermistor RT68
R.V. coil heating ON cooling OFF
Refrigerant pipe ø6.35 (with heat insulator)
Refrigerant flow in cooling Refrigerant flow in heating
MAX. REFRIGERANT PIPING LENGTH and MAX. HEIGHT DIFFERENCE
Model
MUZ-LN25VG MUZ-LN25VG2 MUZ-LN35VG MUZ-LN35VG2 MUZ-LN50VG MUZ-LN50VG2 MUZ-
LN60VG
Refrigerant piping: m Max. Length A Max. Height difference B
20
12
30
12
30
15
Piping size O.D: mm
Gas
Liquid
9.52
6.35
9.52
6.35
12.7
6.35
Indoor unit
Max. Height difference
B
Max. Length A
Outdoor unit
ADDITIONAL REFRIGERANT CHARGE (R32: g)
Model
MUZ-LN25VG MUZ-LN35VG MUZ-LN25VG2 MUZ-LN35VG2 MUZ-LN50VG MUZ-LN50VG2
Outdoor unit precharged 7 m
1,000
0
800
–
850
–
1,250
0
1,250
–
11 m
80
20 20 80 –
Refrigerant piping length (one way) 12 m 13 m 14 m 15 m 16 m
100 120 140 160 180
40
60
80
100 120
40
60
80
100 120
100 120 140 160 180
–
–
–
0
20
Calculation
MUZ-LN25/35/50VG: X g = 20 g/m × (Refrigerant piping length (m) – 7)
MUZ-LN25/35VG2: X g = 20 g/m × (Refrigerant piping length (m) – 10)
MUZ-LN50VG2:
X g = 20 g/m × (Refrigerant piping length (m) – 15)
17 m
200
140 140 200 40
Model
Outdoor unit
precharged
7 m
Refrigerant piping length (one way)
16 m
17 m
20 m
MUZ-LN60VG
1,450
0
180
200
260
Calculation: X g = 20 g/m × (Refrigerant piping length (m) 7)
OBH767B
18
25 m 360
18 m
220
160 160 220 60
20 m
260
200 200 260 100
30 m 460
9 PERFORMANCE CURVES
MUZ-LN25VG MUZ-LN35VG MUZ-LN50VG MUZ-LN60VG MUZ-LN25VG2 MUZ-LN35VG2 MUZ- LN50VG2
The standard specifications apply only to the operation of the air conditioner under normal conditions. Since operating condi-
tions vary according to the areas where these units are installed, the following information has been provided to clarify the
operating characteristics of the air conditioner under the conditions indicated by the performance curve.
(1) GUARANTEED VOLTAGE
198 ~ 264 V, 50 Hz
(2) AIRFLOW
Airflow should be set at MAX.
(3) MAIN READINGS
(1) Indoor intake air wet-bulb temperature: (2) Indoor outlet air wet-bulb temperature: (3) Outdoor intake air dry-bulb temperature:
} °C [WB] °C [WB] °C [DB]
Cooling
(4) Total input:
W
(5) Indoor intake air dry-bulb temperature: (6) Outdoor intake air wet-bulb temperature: (7) Total input:
} °C [DB] °C [WB]
Heating
W
Indoor air wet and dry bulb temperature difference on the left side of the following chart shows the difference between the
indoor intake air wet and dry bulb temperature and the indoor outlet air wet and dry bulb temperature for your reference at
service.
How to measure the indoor air wet and dry bulb temperature difference 1.
Attach at least 2 sets of wet and dry bulb thermometers to the indoor air
intake as shown in the figure, and at least 2 sets of wet and dry bulb
thermometers to the indoor air outlet. The thermometers must be attached to
the position where air
speed is high.
2. Attach at least 2 sets of wet and dry bulb thermometers to the outdoor air
intake. Cover the thermometers to prevent direct rays of the sun.
3. Check that the air filter is cleaned. 4. Open windows and doors of room.
5. Press the EMERGENCY OPERATION switch once (twice) to start the EMERGENCY
COOL (HEAT) MODE. 6. When system stabilizes after more than 15 minutes,
measure temperature and take an average temperature. 7. 10 minutes later,
measure temperature again and check that the temperature does not change.
INDOOR UNIT
OUTDOOR UNIT
Indoor air Wet-bulb temperature difference (°C)
MUZ-LN25VG MUZ-LN25VG2
Wet and dry bulb thermometers
FRONT VIEW
Wet and dry bulb thermometers
BACK VIEW
9-1. CAPACITY AND INPUT CURVES
5.6 5.3 7.5 7.4 10.4 11.4 1.5 5.2 4.9 7.0 6.8 9.6 10.5 1.4 4.8 4.6 6.4 6.3 8.8
9.6 1.3 4.4 4.2 5.8 5.7 8.0 8.7 1.2 4.0 3.8 5.3 5.2 7.2 7.9 1.1 3.6 3.4 4.8
4.7 6.5 7.1 1.0 3.2 3.1 4.3 4.2 5.8 6.3 0.9
-10 -5
Capacity correction factors
Cooling capacity (at Rated frequency)
Indoor intake air Wet-bulb temperature( )
26 24
22 20 18 0 5 10 15 20 25 30 35 40 45 Outdoor intake air Dry-bulb
temperature(°C)
MUZ-LN60VG
MUZ-LN35VG MUZ-LN35VG2 MUZ-LN50VG MUZ-LN50VG2
OBH767B
19
Indoor air Wet-bulb temperature difference (°C)
MUZ-LN25VG
4.8 4.6 6.4 6.3 8.8 9.6 4.4 4.2 5.8 5.7 8.0 8.7 4.0 3.8 5.3 5.2 7.2 7.9 3.6 3.4 4.8 4.7 6.5 7.1 3.2 3.1 4.3 4.2 5.8 6.3 2.8 2.7 3.7 3.7 5.0 5.5
Input correction factors
1.3 1.2 1.1 1.0 0.9 0.8
-10
Total input (Cooling : at Rated frequency)
26
24
22 20
18
Indoor intake air Wet-bulb temperature( )
-5 0 5 10 15 20 25 30 35 40 45
Outdoor intake air Dry-bulb temperature (°C)
MUZ-LN35VG2 MUZ-LN50VG MUZ-LN50VG2 MUZ-LN60VG
MUZ-LN35VG
MUZ-LN25VG2
14.5 15.1 19.1 18.8 25.0 28.3
13.4 13.9 17.6 17.4 23.1 26.1
12.3 12.7 16.2 15.9 21.1 24.0
11.2 11.6 14.7 14.5 19.2 21.8
10.1 10.4 13.2 13.0 17.3 19.6
8.9
9.3 11.7 11.6 15.4 17.4
7.8
8.1 10.3 10.1 13.5 15.3
6.7
6.9
8.8
8.7 11.5 13.1
5.6
5.8
7.3
7.2
9.6 10.9
4.5
4.6
5.9
5.8
7.7
8.7
Capacity correction factor
Heating capacity (at Rated frequency)
1.3
1.2 1.1 1.0 0.9 0.8
Indoor intake air Dry-bulb temperature ( )
0.7
0.6
0.5
0.4
-15
-10
-5
0
5
10
Outdoor intake air Wet-bulb temperature (°C)
15 20 26 15
Indoor air Dry-bulb temperature difference (°C)
MUZ-LN25VG
MUZ-LN60VG
MUZ-LN35VG2 MUZ-LN50VG MUZ-LN50VG2
MUZ-LN35VG
MUZ-LN25VG2
Indoor air Dry-bulb temperature difference (°C)
14.5 15.1 19.1 18.8 25.0 28.3
13.4 13.9 17.6 17.4 23.1 26.1
12.3 12.7 16.2 15.9 21.1 24.0
11.2 11.6 14.7 14.5 19.2 21.8
10.1 10.4 13.2 13.0 17.3 19.6
8.9
9.3 11.7 11.6 15.4 17.4
7.8
8.1 10.3 10.1 13.5 15.3
6.7
6.9 8.8
8.7 11.5 13.1
5.6
5.8 7.3
7.2
9.6 10.9
4.5
4.6 5.9
5.8
7.7
8.7
Input correction factor
Total input (Heating : at Rated frequency) 1.3
1.2
1.1 1.0 0.9
Indoor intake air Dry-bulb temperature ( )
26 20 15
0.8
0.7
0.6
0.5
0.4
-15
-10
-5
0
5
10
15
Outdoor intake air Wet-bulb temperature (°C)
MUZ-LN60VG
MUZ-LN35VG2 MUZ-LN50VG MUZ-LN50VG2
MUZ-LN25VG2 MUZ-LN35VG
MUZ-LN25VG
NOTE: The above broken lines are for the heating operation without any frost and defrost operation.
OBH767B
20
Input correction factors
Capacity correction factors
Input correction factors
Capacity correction factors
9-2. CAPACITY AND INPUT CORRECTION BY OPERATIONAL FREQUENCY OF COMPRESSOR
MUZ-LN25VG
Correction of Cooling capacity
Correction of Cooling input
1.5
2.0
Correction of Heating capacity 2.0
Correction of Heating input 3
1.5
1.5
1.0
2
1.0
1.0
0.5
1
0.5
0.5
Capacity correction factors
0
50
100
The operational frequency of compressor (Hz)
MUZ-LN25VG2
Correction of Cooling capacity 1.5
0
50
100
The operational frequency of compressor (Hz)
Correction of Cooling input 2.0
0
50
100
150
The operational frequency of compressor (Hz)
Correction of Heating capacity 2.0
Capacity correction factors
Input correction factors
1.5
1.5
1.0
1.0
1.0
0.5
0.5
0.5
0.0
0
50
100
The operational frequency of compressor (Hz)
MUZ-LN35VG
Correction of Cooling capacity 1.5
0.0
0
50
100
The operational frequency of compressor (Hz)
Correction of Cooling input 2.0
0.0
0
50
100
150
The operational frequency of compressor (Hz)
Correction of Heating capacity 2.0
1.5
1.5
1.0
1.0
1.0
0.5
0.5
0.5
Input correction factors
0
50
100
150
The operational frequency
of compressor (Hz)
Correction of Heating input 3
2
1
0
0
50
100
150
The operational frequency
of compressor (Hz)
Correction of Heating input 3
2
1
Input correction factors
Capacity correction factors
Input correction factors
Capacity correction factors
Capacity correction factors
0
50
100
The operational frequency of compressor (Hz)
MUZ-LN35VG2
Correction of Cooling capacity 1.5
0
50
100
The operational frequency
of compressor (Hz)
Correction of Cooling input 2.0
0
50
100
150
The operational frequency of compressor (Hz)
Correction of Heating capacity 2.0
Capacity correction factors
Input correction factors
1.5
1.5
1.0
1.0
1.0
0.5
0.5
0.5
0
50
100
The operational frequency of compressor (Hz)
0.0 0
50
100
The operational frequency
of compressor (Hz)
0.00
50
100
150
The operational frequency of compressor (Hz)
Input correction factors
0
50
100
150
The operational frequency
of compressor (Hz)
Correction of Heating input 3
2
1
00
50
100
150
The operational frequency
of compressor (Hz)
OBH767B
21
Capacity correction factors
Input correction factors
Capacity correction factors
Input correction factors
MUZ-LN50VG MUZ-LN50VG2
Correction of Cooling capacity
Correction of Cooling input
1.5
2.0
1.5 1.0
1.0
0.5 0.5
Correction of Heating capacity 1.5 1.0 0.5
Correction of Heating input 2.5 2.0 1.5 1.0 0.5
0
50
100
150
The operational frequency of compressor (Hz)
0
50
100
150
The operational frequency
of compressor (Hz)
MUZ-LN60VG
1.5 Correction of Cooling capacity
2.0 Correction of Cooling input
0
50
100
150
The operational frequency of compressor (Hz)
1.5 Correction of Heating capacity
0
50
100
150
The operational frequency
of compressor (Hz)
2.0 Correction of Heating input
1.5
1.5
1.0
1.0
1.0
1.0
0.5
0.5
0.5
0.5
Input correction factors
Capacity correction factors
Input correction factors
Capacity correction factors
0
50
100
150
The operational frequency of compressor (Hz)
0
50
100
150
The operational frequency of compressor (Hz)
0
50
100
150
The operational frequency of compressor (Hz)
0
50
100
150
The operational frequency
of compressor (Hz)
9-3. HOW TO OPERATE FIXED-FREQUENCY OPERATION
OBH767B
22
9-4. OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT
COOL operation
Dry-bulb temperature (°C)
Both indoor and outdoor unit are under the same temperature/
20
humidity condition.
25
Operation: TEST RUN OPERATION (Refer to 8-3.)
30
Outdoor low pressure
Relative humidity (%) 50 60 70
MUZ-LN25VG
(kgf/cm2 [Gauge])(MPa [Gauge]) 12.0 1.20
11.8 1.18
MUZ-LN25VG2
(kgf/cm2 [Gauge])(MPa [Gauge]) 16.0 1.6
14.0 1.4
11.6 1.16
12.0 1.2
11.4 1.14
10.0 1.0
11.2 1.12
11.0 1.1015 20 25 30 35 50 60 70
Ambient temperature(°C) Ambient humidity(%)
MUZ-LN35VG
(kgf/cm2 [Gauge])(MPa [Gauge]) 10.6 1.06
10.5 1.05
8.0 0.8
6.0 0.615 20 25 30 35 50 60 70
Ambient temperature(°C) Ambient humidity(%)
MUZ-LN35VG2
(kgf/cm2 [Gauge])(MPa [Gauge]) 16.0 1.6
14.0 1.4
10.4 1.04
12.0 1.2
10.3 1.03
10.0 1.0
10.2 1.02
10.1 1.0115 20 25 30 35 50 60 70
Ambient temperature(°C) Ambient humidity(%)
MUZ-LN50VG MUZ-LN50VG2
(kgf/cm2 [Gauge])(MPa [Gauge]) 9.00 0.900
8.94 0.894
8.0 0.8 6.0 0.615 20 25 30 35
50 60 70 Ambient temperature(°C) Ambient humidity(%)
MUZ-LN60VG
(kgf/cm2 [Gauge])(MPa [Gauge]) 9.0 0.90 8.9 0.89
8.88 0.888
8.8 0.88
8.82 0.882
8.7 0.87
8.76 0.876
8.70 0.87015 20 25 30 35 50 60 70
Ambient temperature(°C) Ambient humidity(%)
8.6 0.86
8.5 0.8515 20 25 30 35 50 60 70
Ambient temperature(°C) Ambient humidity(%)
NOTE: The unit of pressure has been changed to MPa on the international system of units (SI unit system) The conversion factor is: 1 (MPa [Gauge]) = 10.2 (kgf/cm2 [Gauge])
OBH767B
23
Outdoor current (A)
Outdoor current (A)
Outdoor unit current MUZ-LN25VG
2.5
2.2
1.9
1.6
1.3
1.0 15 20 25 30 35 50 60 70 Ambient temperature(°C) Ambient humidity(%)
MUZ-LN50VG MUZ-LN50VG2
6.0
5.6
5.2
4.8
4.4
4.0 15 20 25 30 35 50 60 70 Ambient temperature(°C) Ambient humidity(%)
Outdoor current (A)
Outdoor current (A)
MUZ-LN25VG2
2.4
2.2
2.0
1.8
1.6 15 20 25 30 35 50 60 70 Ambient temperature(°C) Ambient humidity(%)
MUZ-LN60VG
7.0 6.6
6.2 5.8 5.4 5.0
15 20 25 30 35 50 60 70
Ambient temperature(°C) Ambient humidity(%)
Outdoor current (A)
MUZ-LN35VG
3.5
3.2
2.9
2.6
2.3
2.0 15 20 25 30 35 50 60 70 Ambient temperature(°C) Ambient humidity(%)
Outdoor current (A)
MUZ-LN35VG2
3.5
3.2
2.9
2.6
2.3 15 20 25 30 35 50 60 70 Ambient temperature(°C) Ambient humidity(%)
HEAT operation
Condition:
Indoor
Dry bulb temperature (°C) 20.0 2
Wet bulb temperature (°C) 14.5 1
Operation: Test run operation (Refer to 8-3.)
Outdoor 7 15 20.0 6 12 14.5
Outdoor current (A)
Outdoor current (A)
Outdoor unit current MUZ-LN25VG
3.0 2.9 2.8 2.7 2.6 2.50 5 10 15 20 25
Ambient temperature (°C)
MUZ-LN50VG MUZ-LN50VG2
7.5 7.2 6.9 6.6
6.3 6.00 5 10 15 20 25
Ambient temperature (°C)
Outdoor current (A)
Outdoor current (A)
MUZ-LN25VG2
2.8 2.7 2.6 2.5 2.4 2.30 5 10 15 20 25
Ambient temperature (°C)
MUZ-LN60VG
8.5 8.2 7.9 7.6
7.3 7.00 5 10 15 20 25
Ambient temperature (°C)
Outdoor current (A)
MUZ-LN35VG
4.0 3.9 3.8 3.7 3.6 3.50 5 10 15 20 25
Ambient temperature (°C)
Outdoor current (A)
MUZ-LN35VG2
3.3 3.2 3.1 3.0 2.9 2.8 2.70 5 10 15 20 25
Ambient temperature (°C)
OBH767B
24
PERFORMANCE DATA COOL operation at Rated frequency
MUZ-LN25VG
CAPACITY: 2.5 kW
SHF: 0.97
INPUT: 485 W
OUTDOOR DB (°C)
INDOOR INDOOR DB (°C) WB (°C)
21
25
27
Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT Q
21
18 2.94 2.32 0.79 388 2.81 2.22 0.79 407 2.70 2.13 0.79 427 2.60
21
20 3.06 2.05 0.67 407 2.94 1.97 0.67 432 2.85 1.91 0.67 441 2.75
22
18 2.94 2.44 0.83 388 2.81 2.33 0.83 407 2.70 2.24 0.83 427 2.60
22
20 3.06 2.17 0.71 407 2.94 2.09 0.71 432 2.85 2.02 0.71 441 2.75
22
22 3.19 1.88 0.59 422 3.08 1.81 0.59 449 3.00 1.77 0.59 461 2.88
23
18 2.94 2.56 0.87 388 2.81 2.45 0.87 407 2.70 2.35 0.87 427 2.60
23
20 3.06 2.30 0.75 407 2.94 2.20 0.75 432 2.85 2.14 0.75 441 2.75
23
22 3.19 2.01 0.63 422 3.08 1.94 0.63 449 3.00 1.89 0.63 461 2.88
24
18 2.94 2.67 0.91 388 2.81 2.56 0.91 407 2.70 2.46 0.91 427 2.60
24
20 3.06 2.42 0.79 407 2.94 2.32 0.79 432 2.85 2.25 0.79 441 2.75
24
22 3.19 2.14 0.67 422 3.08 2.06 0.67 449 3.00 2.01 0.67 461 2.88
24
24 3.35 1.84 0.55 441 3.23 1.77 0.55 466 3.15 1.73 0.55 480 3.05
25
18 2.94 2.79 0.95 388 2.81 2.67 0.95 407 2.70 2.57 0.95 427 2.60
25
20 3.06 2.54 0.83 407 2.94 2.44 0.83 432 2.85 2.37 0.83 441 2.75
25
22 3.19 2.26 0.71 422 3.08 2.18 0.71 449 3.00 2.13 0.71 461 2.88
25
24 3.35 1.98 0.59 441 3.23 1.90 0.59 466 3.15 1.86 0.59 480 3.05
26
18 2.94 2.91 0.99 388 2.81 2.78 0.99 407 2.70 2.67 0.99 427 2.60
26
20 3.06 2.66 0.87 407 2.94 2.56 0.87 432 2.85 2.48 0.87 441 2.75
26
22 3.19 2.39 0.75 422 3.08 2.31 0.75 449 3.00 2.25 0.75 461 2.88
26
24 3.35 2.11 0.63 441 3.23 2.03 0.63 466 3.15 1.98 0.63 480 3.05
26
26 3.45 1.76 0.51 466 3.35 1.71 0.51 490 3.30 1.68 0.51 504 3.20
27
18 2.94 2.94 1.00 388 2.81 2.81 1.00 407 2.70 2.70 1.00 427 2.60
27
20 3.06 2.79 0.91 407 2.94 2.67 0.91 432 2.85 2.59 0.91 441 2.75
27
22 3.19 2.52 0.79 422 3.08 2.43 0.79 449 3.00 2.37 0.79 461 2.88
27
24 3.35 2.24 0.67 441 3.23 2.16 0.67 466 3.15 2.11 0.67 480 3.05
27
26 3.45 1.90 0.55 466 3.35 1.84 0.55 490 3.30 1.82 0.55 504 3.20
28
18 2.94 2.94 1.00 388 2.81 2.81 1.00 407 2.70 2.70 1.00 427 2.60
28
20 3.06 2.91 0.95 407 2.94 2.79 0.95 432 2.85 2.71 0.95 441 2.75
28
22 3.19 2.65 0.83 422 3.08 2.55 0.83 449 3.00 2.49 0.83 461 2.88
28
24 3.35 2.38 0.71 441 3.23 2.29 0.71 466 3.15 2.24 0.71 480 3.05
28
26 3.45 2.04 0.59 466 3.35 1.98 0.59 490 3.30 1.95 0.59 504 3.20
29
18 2.94 2.94 1.00 388 2.81 2.81 1.00 407 2.70 2.70 1.00 427 2.60
29
20 3.06 3.03 0.99 407 2.94 2.91 0.99 432 2.85 2.82 0.99 441 2.75
29
22 3.19 2.77 0.87 422 3.08 2.68 0.87 449 3.00 2.61 0.87 461 2.88
29
24 3.35 2.51 0.75 441 3.23 2.42 0.75 466 3.15 2.36 0.75 480 3.05
29
26 3.45 2.17 0.63 466 3.35 2.11 0.63 490 3.30 2.08 0.63 504 3.20
30
18 2.94 2.94 1.00 388 2.81 2.81 1.00 407 2.70 2.70 1.00 427 2.60
30
20 3.06 3.06 1.00 407 2.94 2.94 1.00 432 2.85 2.85 1.00 441 2.75
30
22 3.19 2.90 0.91 422 3.08 2.80 0.91 449 3.00 2.73 0.91 461 2.88
30
24 3.35 2.65 0.79 441 3.23 2.55 0.79 466 3.15 2.49 0.79 480 3.05
30
26 3.45 2.31 0.67 466 3.35 2.24 0.67 490 3.30 2.21 0.67 504 3.20
31
18 2.94 2.94 1.00 388 2.81 2.81 1.00 407 2.70 2.70 1.00 427 2.60
31
20 3.06 3.06 1.00 407 2.94 2.94 1.00 432 2.85 2.85 1.00 441 2.75
31
22 3.19 3.03 0.95 422 3.08 2.92 0.95 449 3.00 2.85 0.95 461 2.88
31
24 3.35 2.78 0.83 441 3.23 2.68 0.83 466 3.15 2.61 0.83 480 3.05
31
26 3.45 2.45 0.71 466 3.35 2.38 0.71 490 3.30 2.34 0.71 504 3.20
32
18 2.94 2.94 1.00 388 2.81 2.81 1.00 407 2.70 2.70 1.00 427 2.60
32
20 3.06 3.06 1.00 407 2.94 2.94 1.00 432 2.85 2.85 1.00 441 2.75
32
22 3.19 3.16 0.99 422 3.08 3.04 0.99 449 3.00 2.97 0.99 461 2.88
32
24 3.35 2.91 0.87 441 3.23 2.81 0.87 466 3.15 2.74 0.87 480 3.05
32
26 3.45 2.59 0.75 466 3.35 2.51 0.75 490 3.30 2.48 0.75 504 3.20
NOTE Q : Total capacity (kW)
SHF : Sensible heat factor DB : Dry-bulb temperature
SHC : Sensible heat capacity (kW) INPUT : Total power input (W) WB : Wet-bulb temperature
30 SHC SHF 2.05 0.79 1.84 0.67 2.16 0.83 1.95 0.71 1.70 0.59 2.26 0.87 2.06 0.75 1.81 0.63 2.37 0.91 2.17 0.79 1.93 0.67 1.68 0.55 2.47 0.95 2.28 0.83 2.04 0.71 1.80 0.59 2.57 0.99 2.39 0.87 2.16 0.75 1.92 0.63 1.63 0.51 2.60 1.00 2.50 0.91 2.27 0.79 2.04 0.67 1.76 0.55 2.60 1.00 2.61 0.95 2.39 0.83 2.17 0.71 1.89 0.59 2.60 1.00 2.72 0.99 2.50 0.87 2.29 0.75 2.02 0.63 2.60 1.00 2.75 1.00 2.62 0.91 2.41 0.79 2.14 0.67 2.60 1.00 2.75 1.00 2.73 0.95 2.53 0.83 2.27 0.71 2.60 1.00 2.75 1.00 2.85 0.99 2.65 0.87 2.40 0.75
INPUT 446 461 446 461 480 446 461 480 446 461 480 504 446 461 480 504 446 461 480 504 519 446 461 480 504 519 446 461 480 504 519 446 461 480 504 519 446 461 480 504 519 446 461 480 504 519 446 461 480 504 519
OBH767B
25
PERFORMANCE DATA COOL operation at Rated frequency
MUZ-LN25VG
CAPACITY: 2.5 kW
SHF: 0.97
INPUT: 485 W
OUTDOOR DB (°C)
INDOOR INDOOR DB (°C) WB (°C)
35
40
46
Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT
21
18 2.45 1.94 0.79 475 2.25 1.78 0.79 504 2.08 1.64 0.79 524
21
20 2.58 1.73 0.67 495 2.40 1.61 0.67 519 2.23 1.49 0.67 548
22
18 2.45 2.03 0.83 475 2.25 1.87 0.83 504 2.08 1.72 0.83 524
22
20 2.58 1.83 0.71 495 2.40 1.70 0.71 519 2.23 1.58 0.71 548
22
22 2.73 1.61 0.59 514 2.55 1.50 0.59 543 2.38 1.40 0.59 563
23
18 2.45 2.13 0.87 475 2.25 1.96 0.87 504 2.08 1.81 0.87 524
23
20 2.58 1.93 0.75 495 2.40 1.80 0.75 519 2.23 1.67 0.75 548
23
22 2.73 1.72 0.63 514 2.55 1.61 0.63 543 2.38 1.50 0.63 563
24
18 2.45 2.23 0.91 475 2.25 2.05 0.91 504 2.08 1.89 0.91 524
24
20 2.58 2.03 0.79 495 2.40 1.90 0.79 519 2.23 1.76 0.79 548
24
22 2.73 1.83 0.67 514 2.55 1.71 0.67 543 2.38 1.59 0.67 563
24
24 2.88 1.58 0.55 534 2.70 1.49 0.55 558 2.55 1.40 0.55 582
25
18 2.45 2.33 0.95 475 2.25 2.14 0.95 504 2.08 1.97 0.95 524
25
20 2.58 2.14 0.83 495 2.40 1.99 0.83 519 2.23 1.85 0.83 548
25
22 2.73 1.93 0.71 514 2.55 1.81 0.71 543 2.38 1.69 0.71 563
25
24 2.88 1.70 0.59 534 2.70 1.59 0.59 558 2.55 1.50 0.59 582
26
18 2.45 2.43 0.99 475 2.25 2.23 0.99 504 2.08 2.05 0.99 524
26
20 2.58 2.24 0.87 495 2.40 2.09 0.87 519 2.23 1.94 0.87 548
26
22 2.73 2.04 0.75 514 2.55 1.91 0.75 543 2.38 1.78 0.75 563
26
24 2.88 1.81 0.63 534 2.70 1.70 0.63 558 2.55 1.61 0.63 582
26
26 3.03 1.54 0.51 553 2.85 1.45 0.51 577 2.68 1.36 0.51 601
27
18 2.45 2.45 1.00 475 2.25 2.25 1.00 504 2.08 2.08 1.00 524
27
20 2.58 2.34 0.91 495 2.40 2.18 0.91 519 2.23 2.02 0.91 548
27
22 2.73 2.15 0.79 514 2.55 2.01 0.79 543 2.38 1.88 0.79 563
27
24 2.88 1.93 0.67 534 2.70 1.81 0.67 558 2.55 1.71 0.67 582
27
26 3.03 1.66 0.55 553 2.85 1.57 0.55 577 2.68 1.47 0.55 601
28
18 2.45 2.45 1.00 475 2.25 2.25 1.00 504 2.08 2.08 1.00 524
28
20 2.58 2.45 0.95 495 2.40 2.28 0.95 519 2.23 2.11 0.95 548
28
22 2.73 2.26 0.83 514 2.55 2.12 0.83 543 2.38 1.97 0.83 563
28
24 2.88 2.04 0.71 534 2.70 1.92 0.71 558 2.55 1.81 0.71 582
28
26 3.03 1.78 0.59 553 2.85 1.68 0.59 577 2.68 1.58 0.59 601
29
18 2.45 2.45 1.00 475 2.25 2.25 1.00 504 2.08 2.08 1.00 524
29
20 2.58 2.55 0.99 495 2.40 2.38 0.99 519 2.23 2.20 0.99 548
29
22 2.73 2.37 0.87 514 2.55 2.22 0.87 543 2.38 2.07 0.87 563
29
24 2.88 2.16 0.75 534 2.70 2.03 0.75 558 2.55 1.91 0.75 582
29
26 3.03 1.91 0.63 553 2.85 1.80 0.63 577 2.68 1.69 0.63 601
30
18 2.45 2.45 1.00 475 2.25 2.25 1.00 504 2.08 2.08 1.00 524
30
20 2.58 2.58 1.00 495 2.40 2.40 1.00 519 2.23 2.23 1.00 548
30
22 2.73 2.48 0.91 514 2.55 2.32 0.91 543 2.38 2.16 0.91 563
30
24 2.88 2.27 0.79 534 2.70 2.13 0.79 558 2.55 2.01 0.79 582
30
26 3.03 2.03 0.67 553 2.85 1.91 0.67 577 2.68 1.79 0.67 601
31
18 2.45 2.45 1.00 475 2.25 2.25 1.00 504 2.08 2.08 1.00 524
31
20 2.58 2.58 1.00 495 2.40 2.40 1.00 519 2.23 2.23 1.00 548
31
22 2.73 2.59 0.95 514 2.55 2.42 0.95 543 2.38 2.26 0.95 563
31
24 2.88 2.39 0.83 534 2.70 2.24 0.83 558 2.55 2.12 0.83 582
31
26 3.03 2.15 0.71 553 2.85 2.02 0.71 577 2.68 1.90 0.71 601
32
18 2.45 2.45 1.00 475 2.25 2.25 1.00 504 2.08 2.08 1.00 524
32
20 2.58 2.58 1.00 495 2.40 2.40 1.00 519 2.23 2.23 1.00 548
32
22 2.73 2.70 0.99 514 2.55 2.52 0.99 543 2.38 2.35 0.99 563
32
24 2.88 2.50 0.87 534 2.70 2.35 0.87 558 2.55 2.22 0.87 582
32
26 3.03 2.27 0.75 553 2.85 2.14 0.75 577 2.68 2.01 0.75 601
NOTE Q : Total capacity (kW)
SHF : Sensible heat factor DB : Dry-bulb temperature
SHC : Sensible heat capacity (kW) INPUT : Total power input (W) WB : Wet-bulb temperature
OBH767B
26
PERFORMANCE DATA COOL operation at Rated frequency
MUZ-LN25VG2
CAPACITY: 2.5 kW
SHF: 0.97
INPUT: 485 W
OUTDOOR DB (°C)
INDOOR INDOOR DB (°C) WB (°C)
21
25
27
Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT Q
21
18 2.94 2.32 0.79 388 2.81 2.22 0.79 407 2.70 2.13 0.79 427 2.60
21
20 3.06 2.05 0.67 407 2.94 1.97 0.67 432 2.85 1.91 0.67 441 2.75
22
18 2.94 2.44 0.83 388 2.81 2.33 0.83 407 2.70 2.24 0.83 427 2.60
22
20 3.06 2.17 0.71 407 2.94 2.09 0.71 432 2.85 2.02 0.71 441 2.75
22
22 3.19 1.88 0.59 422 3.08 1.81 0.59 449 3.00 1.77 0.59 461 2.88
23
18 2.94 2.56 0.87 388 2.81 2.45 0.87 407 2.70 2.35 0.87 427 2.60
23
20 3.06 2.30 0.75 407 2.94 2.20 0.75 432 2.85 2.14 0.75 441 2.75
23
22 3.19 2.01 0.63 422 3.08 1.94 0.63 449 3.00 1.89 0.63 461 2.88
24
18 2.94 2.67 0.91 388 2.81 2.56 0.91 407 2.70 2.46 0.91 427 2.60
24
20 3.06 2.42 0.79 407 2.94 2.32 0.79 432 2.85 2.25 0.79 441 2.75
24
22 3.19 2.14 0.67 422 3.08 2.06 0.67 449 3.00 2.01 0.67 461 2.88
24
24 3.35 1.84 0.55 441 3.23 1.77 0.55 466 3.15 1.73 0.55 480 3.05
25
18 2.94 2.79 0.95 388 2.81 2.67 0.95 407 2.70 2.57 0.95 427 2.60
25
20 3.06 2.54 0.83 407 2.94 2.44 0.83 432 2.85 2.37 0.83 441 2.75
25
22 3.19 2.26 0.71 422 3.08 2.18 0.71 449 3.00 2.13 0.71 461 2.88
25
24 3.35 1.98 0.59 441 3.23 1.90 0.59 466 3.15 1.86 0.59 480 3.05
26
18 2.94 2.91 0.99 388 2.81 2.78 0.99 407 2.70 2.67 0.99 427 2.60
26
20 3.06 2.66 0.87 407 2.94 2.56 0.87 432 2.85 2.48 0.87 441 2.75
26
22 3.19 2.39 0.75 422 3.08 2.31 0.75 449 3.00 2.25 0.75 461 2.88
26
24 3.35 2.11 0.63 441 3.23 2.03 0.63 466 3.15 1.98 0.63 480 3.05
26
26 3.45 1.76 0.51 466 3.35 1.71 0.51 490 3.30 1.68 0.51 504 3.20
27
18 2.94 2.94 1.00 388 2.81 2.81 1.00 407 2.70 2.70 1.00 427 2.60
27
20 3.06 2.79 0.91 407 2.94 2.67 0.91 432 2.85 2.59 0.91 441 2.75
27
22 3.19 2.52 0.79 422 3.08 2.43 0.79 449 3.00 2.37 0.79 461 2.88
27
24 3.35 2.24 0.67 441 3.23 2.16 0.67 466 3.15 2.11 0.67 480 3.05
27
26 3.45 1.90 0.55 466 3.35 1.84 0.55 490 3.30 1.82 0.55 504 3.20
28
18 2.94 2.94 1.00 388 2.81 2.81 1.00 407 2.70 2.70 1.00 427 2.60
28
20 3.06 2.91 0.95 407 2.94 2.79 0.95 432 2.85 2.71 0.95 441 2.75
28
22 3.19 2.65 0.83 422 3.08 2.55 0.83 449 3.00 2.49 0.83 461 2.88
28
24 3.35 2.38 0.71 441 3.23 2.29 0.71 466 3.15 2.24 0.71 480 3.05
28
26 3.45 2.04 0.59 466 3.35 1.98 0.59 490 3.30 1.95 0.59 504 3.20
29
18 2.94 2.94 1.00 388 2.81 2.81 1.00 407 2.70 2.70 1.00 427 2.60
29
20 3.06 3.03 0.99 407 2.94 2.91 0.99 432 2.85 2.82 0.99 441 2.75
29
22 3.19 2.77 0.87 422 3.08 2.68 0.87 449 3.00 2.61 0.87 461 2.88
29
24 3.35 2.51 0.75 441 3.23 2.42 0.75 466 3.15 2.36 0.75 480 3.05
29
26 3.45 2.17 0.63 466 3.35 2.11 0.63 490 3.30 2.08 0.63 504 3.20
30
18 2.94 2.94 1.00 388 2.81 2.81 1.00 407 2.70 2.70 1.00 427 2.60
30
20 3.06 3.06 1.00 407 2.94 2.94 1.00 432 2.85 2.85 1.00 441 2.75
30
22 3.19 2.90 0.91 422 3.08 2.80 0.91 449 3.00 2.73 0.91 461 2.88
30
24 3.35 2.65 0.79 441 3.23 2.55 0.79 466 3.15 2.49 0.79 480 3.05
30
26 3.45 2.31 0.67 466 3.35 2.24 0.67 490 3.30 2.21 0.67 504 3.20
31
18 2.94 2.94 1.00 388 2.81 2.81 1.00 407 2.70 2.70 1.00 427 2.60
31
20 3.06 3.06 1.00 407 2.94 2.94 1.00 432 2.85 2.85 1.00 441 2.75
31
22 3.19 3.03 0.95 422 3.08 2.92 0.95 449 3.00 2.85 0.95 461 2.88
31
24 3.35 2.78 0.83 441 3.23 2.68 0.83 466 3.15 2.61 0.83 480 3.05
31
26 3.45 2.45 0.71 466 3.35 2.38 0.71 490 3.30 2.34 0.71 504 3.20
32
18 2.94 2.94 1.00 388 2.81 2.81 1.00 407 2.70 2.70 1.00 427 2.60
32
20 3.06 3.06 1.00 407 2.94 2.94 1.00 432 2.85 2.85 1.00 441 2.75
32
22 3.19 3.16 0.99 422 3.08 3.04 0.99 449 3.00 2.97 0.99 461 2.88
32
24 3.35 2.91 0.87 441 3.23 2.81 0.87 466 3.15 2.74 0.87 480 3.05
32
26 3.45 2.59 0.75 466 3.35 2.51 0.75 490 3.30 2.48 0.75 504 3.20
NOTE Q : Total capacity (kW)
SHF : Sensible heat factor DB : Dry-bulb temperature
SHC : Sensible heat capacity (kW) INPUT : Total power input (W) WB : Wet-bulb temperature
30 SHC SHF 2.05 0.79 1.84 0.67 2.16 0.83 1.95 0.71 1.70 0.59 2.26 0.87 2.06 0.75 1.81 0.63 2.37 0.91 2.17 0.79 1.93 0.67 1.68 0.55 2.47 0.95 2.28 0.83 2.04 0.71 1.80 0.59 2.57 0.99 2.39 0.87 2.16 0.75 1.92 0.63 1.63 0.51 2.60 1.00 2.50 0.91 2.27 0.79 2.04 0.67 1.76 0.55 2.60 1.00 2.61 0.95 2.39 0.83 2.17 0.71 1.89 0.59 2.60 1.00 2.72 0.99 2.50 0.87 2.29 0.75 2.02 0.63 2.60 1.00 2.75 1.00 2.62 0.91 2.41 0.79 2.14 0.67 2.60 1.00 2.75 1.00 2.73 0.95 2.53 0.83 2.27 0.71 2.60 1.00 2.75 1.00 2.85 0.99 2.65 0.87 2.40 0.75
INPUT 446 461 446 461 480 446 461 480 446 461 480 504 446 461 480 504 446 461 480 504 519 446 461 480 504 519 446 461 480 504 519 446 461 480 504 519 446 461 480 504 519 446 461 480 504 519 446 461 480 504 519
OBH767B
27
PERFORMANCE DATA COOL operation at Rated frequency
MUZ-LN25VG2
CAPACITY: 2.5 kW
SHF: 0.97
INPUT: 485 W
OUTDOOR DB (°C)
INDOOR INDOOR DB (°C) WB (°C)
35
40
46
Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT
21
18 2.45 1.94 0.79 475 2.25 1.78 0.79 504 2.08 1.64 0.79 524
21
20 2.58 1.73 0.67 495 2.40 1.61 0.67 519 2.23 1.49 0.67 548
22
18 2.45 2.03 0.83 475 2.25 1.87 0.83 504 2.08 1.72 0.83 524
22
20 2.58 1.83 0.71 495 2.40 1.70 0.71 519 2.23 1.58 0.71 548
22
22 2.73 1.61 0.59 514 2.55 1.50 0.59 543 2.38 1.40 0.59 563
23
18 2.45 2.13 0.87 475 2.25 1.96 0.87 504 2.08 1.81 0.87 524
23
20 2.58 1.93 0.75 495 2.40 1.80 0.75 519 2.23 1.67 0.75 548
23
22 2.73 1.72 0.63 514 2.55 1.61 0.63 543 2.38 1.50 0.63 563
24
18 2.45 2.23 0.91 475 2.25 2.05 0.91 504 2.08 1.89 0.91 524
24
20 2.58 2.03 0.79 495 2.40 1.90 0.79 519 2.23 1.76 0.79 548
24
22 2.73 1.83 0.67 514 2.55 1.71 0.67 543 2.38 1.59 0.67 563
24
24 2.88 1.58 0.55 534 2.70 1.49 0.55 558 2.55 1.40 0.55 582
25
18 2.45 2.33 0.95 475 2.25 2.14 0.95 504 2.08 1.97 0.95 524
25
20 2.58 2.14 0.83 495 2.40 1.99 0.83 519 2.23 1.85 0.83 548
25
22 2.73 1.93 0.71 514 2.55 1.81 0.71 543 2.38 1.69 0.71 563
25
24 2.88 1.70 0.59 534 2.70 1.59 0.59 558 2.55 1.50 0.59 582
26
18 2.45 2.43 0.99 475 2.25 2.23 0.99 504 2.08 2.05 0.99 524
26
20 2.58 2.24 0.87 495 2.40 2.09 0.87 519 2.23 1.94 0.87 548
26
22 2.73 2.04 0.75 514 2.55 1.91 0.75 543 2.38 1.78 0.75 563
26
24 2.88 1.81 0.63 534 2.70 1.70 0.63 558 2.55 1.61 0.63 582
26
26 3.03 1.54 0.51 553 2.85 1.45 0.51 577 2.68 1.36 0.51 601
27
18 2.45 2.45 1.00 475 2.25 2.25 1.00 504 2.08 2.08 1.00 524
27
20 2.58 2.34 0.91 495 2.40 2.18 0.91 519 2.23 2.02 0.91 548
27
22 2.73 2.15 0.79 514 2.55 2.01 0.79 543 2.38 1.88 0.79 563
27
24 2.88 1.93 0.67 534 2.70 1.81 0.67 558 2.55 1.71 0.67 582
27
26 3.03 1.66 0.55 553 2.85 1.57 0.55 577 2.68 1.47 0.55 601
28
18 2.45 2.45 1.00 475 2.25 2.25 1.00 504 2.08 2.08 1.00 524
28
20 2.58 2.45 0.95 495 2.40 2.28 0.95 519 2.23 2.11 0.95 548
28
22 2.73 2.26 0.83 514 2.55 2.12 0.83 543 2.38 1.97 0.83 563
28
24 2.88 2.04 0.71 534 2.70 1.92 0.71 558 2.55 1.81 0.71 582
28
26 3.03 1.78 0.59 553 2.85 1.68 0.59 577 2.68 1.58 0.59 601
29
18 2.45 2.45 1.00 475 2.25 2.25 1.00 504 2.08 2.08 1.00 524
29
20 2.58 2.55 0.99 495 2.40 2.38 0.99 519 2.23 2.20 0.99 548
29
22 2.73 2.37 0.87 514 2.55 2.22 0.87 543 2.38 2.07 0.87 563
29
24 2.88 2.16 0.75 534 2.70 2.03 0.75 558 2.55 1.91 0.75 582
29
26 3.03 1.91 0.63 553 2.85 1.80 0.63 577 2.68 1.69 0.63 601
30
18 2.45 2.45 1.00 475 2.25 2.25 1.00 504 2.08 2.08 1.00 524
30
20 2.58 2.58 1.00 495 2.40 2.40 1.00 519 2.23 2.23 1.00 548
30
22 2.73 2.48 0.91 514 2.55 2.32 0.91 543 2.38 2.16 0.91 563
30
24 2.88 2.27 0.79 534 2.70 2.13 0.79 558 2.55 2.01 0.79 582
30
26 3.03 2.03 0.67 553 2.85 1.91 0.67 577 2.68 1.79 0.67 601
31
18 2.45 2.45 1.00 475 2.25 2.25 1.00 504 2.08 2.08 1.00 524
31
20 2.58 2.58 1.00 495 2.40 2.40 1.00 519 2.23 2.23 1.00 548
31
22 2.73 2.59 0.95 514 2.55 2.42 0.95 543 2.38 2.26 0.95 563
31
24 2.88 2.39 0.83 534 2.70 2.24 0.83 558 2.55 2.12 0.83 582
31
26 3.03 2.15 0.71 553 2.85 2.02 0.71 577 2.68 1.90 0.71 601
32
18 2.45 2.45 1.00 475 2.25 2.25 1.00 504 2.08 2.08 1.00 524
32
20 2.58 2.58 1.00 495 2.40 2.40 1.00 519 2.23 2.23 1.00 548
32
22 2.73 2.70 0.99 514 2.55 2.52 0.99 543 2.38 2.35 0.99 563
32
24 2.88 2.50 0.87 534 2.70 2.35 0.87 558 2.55 2.22 0.87 582
32
26 3.03 2.27 0.75 553 2.85 2.14 0.75 577 2.68 2.01 0.75 601
NOTE Q : Total capacity (kW)
SHF : Sensible heat factor DB : Dry-bulb temperature
SHC : Sensible heat capacity (kW) INPUT : Total power input (W) WB : Wet-bulb temperature
OBH767B
28
PERFORMANCE DATA COOL operation at Rated frequency
MUZ-LN35VG
CAPACITY: 3.5 kW
SHF: 0.90
INPUT: 820 W
OUTDOOR DB (°C)
INDOOR INDOOR DB (°C) WB (°C)
21
25
27
Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT Q
21
18 4.11 2.96 0.72 656 3.94 2.84 0.72 689 3.78 2.72 0.72 722 3.64
21
20 4.29 2.57 0.60 689 4.11 2.47 0.60 730 3.99 2.39 0.60 746 3.85
22
18 4.11 3.13 0.76 656 3.94 2.99 0.76 689 3.78 2.87 0.76 722 3.64
22
20 4.29 2.74 0.64 689 4.11 2.63 0.64 730 3.99 2.55 0.64 746 3.85
22
22 4.46 2.32 0.52 713 4.31 2.24 0.52 759 4.20 2.18 0.52 779 4.03
23
18 4.11 3.29 0.80 656 3.94 3.15 0.80 689 3.78 3.02 0.80 722 3.64
23
20 4.29 2.92 0.68 689 4.11 2.80 0.68 730 3.99 2.71 0.68 746 3.85
23
22 4.46 2.50 0.56 713 4.31 2.41 0.56 759 4.20 2.35 0.56 779 4.03
24
18 4.11 3.45 0.84 656 3.94 3.31 0.84 689 3.78 3.18 0.84 722 3.64
24
20 4.29 3.09 0.72 689 4.11 2.96 0.72 730 3.99 2.87 0.72 746 3.85
24
22 4.46 2.68 0.60 713 4.31 2.58 0.60 759 4.20 2.52 0.60 779 4.03
24
24 4.69 2.25 0.48 746 4.52 2.17 0.48 787 4.41 2.12 0.48 812 4.27
25
18 4.11 3.62 0.88 656 3.94 3.47 0.88 689 3.78 3.33 0.88 722 3.64
25
20 4.29 3.26 0.76 689 4.11 3.13 0.76 730 3.99 3.03 0.76 746 3.85
25
22 4.46 2.86 0.64 713 4.31 2.76 0.64 759 4.20 2.69 0.64 779 4.03
25
24 4.69 2.44 0.52 746 4.52 2.35 0.52 787 4.41 2.29 0.52 812 4.27
26
18 4.11 3.78 0.92 656 3.94 3.62 0.92 689 3.78 3.48 0.92 722 3.64
26
20 4.29 3.43 0.80 689 4.11 3.29 0.80 730 3.99 3.19 0.80 746 3.85
26
22 4.46 3.03 0.68 713 4.31 2.93 0.68 759 4.20 2.86 0.68 779 4.03
26
24 4.69 2.63 0.56 746 4.52 2.53 0.56 787 4.41 2.47 0.56 812 4.27
26
26 4.83 2.13 0.44 787 4.69 2.06 0.44 828 4.62 2.03 0.44 853 4.48
27
18 4.11 3.95 0.96 656 3.94 3.78 0.96 689 3.78 3.63 0.96 722 3.64
27
20 4.29 3.60 0.84 689 4.11 3.45 0.84 730 3.99 3.35 0.84 746 3.85
27
22 4.46 3.21 0.72 713 4.31 3.10 0.72 759 4.20 3.02 0.72 779 4.03
27
24 4.69 2.81 0.60 746 4.52 2.71 0.60 787 4.41 2.65 0.60 812 4.27
27
26 4.83 2.32 0.48 787 4.69 2.25 0.48 828 4.62 2.22 0.48 853 4.48
28
18 4.11 4.11 1.00 656 3.94 3.94 1.00 689 3.78 3.78 1.00 722 3.64
28
20 4.29 3.77 0.88 689 4.11 3.62 0.88 730 3.99 3.51 0.88 746 3.85
28
22 4.46 3.39 0.76 713 4.31 3.27 0.76 759 4.20 3.19 0.76 779 4.03
28
24 4.69 3.00 0.64 746 4.52 2.89 0.64 787 4.41 2.82 0.64 812 4.27
28
26 4.83 2.51 0.52 787 4.69 2.44 0.52 828 4.62 2.40 0.52 853 4.48
29
18 4.11 4.11 1.00 656 3.94 3.94 1.00 689 3.78 3.78 1.00 722 3.64
29
20 4.29 3.94 0.92 689 4.11 3.78 0.92 730 3.99 3.67 0.92 746 3.85
29
22 4.46 3.57 0.80 713 4.31 3.44 0.80 759 4.20 3.36 0.80 779 4.03
29
24 4.69 3.19 0.68 746 4.52 3.07 0.68 787 4.41 3.00 0.68 812 4.27
29
26 4.83 2.70 0.56 787 4.69 2.63 0.56 828 4.62 2.59 0.56 853 4.48
30
18 4.11 4.11 1.00 656 3.94 3.94 1.00 689 3.78 3.78 1.00 722 3.64
30
20 4.29 4.12 0.96 689 4.11 3.95 0.96 730 3.99 3.83 0.96 746 3.85
30
22 4.46 3.75 0.84 713 4.31 3.62 0.84 759 4.20 3.53 0.84 779 4.03
30
24 4.69 3.38 0.72 746 4.52 3.25 0.72 787 4.41 3.18 0.72 812 4.27
30
26 4.83 2.90 0.60 787 4.69 2.81 0.60 828 4.62 2.77 0.60 853 4.48
31
18 4.11 4.11 1.00 656 3.94 3.94 1.00 689 3.78 3.78 1.00 722 3.64
31
20 4.29 4.29 1.00 689 4.11 4.11 1.00 730 3.99 3.99 1.00 746 3.85
31
22 4.46 3.93 0.88 713 4.31 3.79 0.88 759 4.20 3.70 0.88 779 4.03
31
24 4.69 3.56 0.76 746 4.52 3.43 0.76 787 4.41 3.35 0.76 812 4.27
31
26 4.83 3.09 0.64 787 4.69 3.00 0.64 828 4.62 2.96 0.64 853 4.48
32
18 4.11 4.11 1.00 656 3.94 3.94 1.00 689 3.78 3.78 1.00 722 3.64
32
20 4.29 4.29 1.00 689 4.11 4.11 1.00 730 3.99 3.99 1.00 746 3.85
32
22 4.46 4.11 0.92 713 4.31 3.96 0.92 759 4.20 3.86 0.92 779 4.03
32
24 4.69 3.75 0.80 746 4.52 3.61 0.80 787 4.41 3.53 0.80 812 4.27
32
26 4.83 3.28 0.68 787 4.69 3.19 0.68 828 4.62 3.14 0.68 853 4.48
NOTE Q : Total capacity (kW)
SHF : Sensible heat factor DB : Dry-bulb temperature
SHC : Sensible heat capacity (kW) INPUT : Total power input (W) WB : Wet-bulb temperature
30 SHC SHF 2.62 0.72 2.31 0.60 2.77 0.76 2.46 0.64 2.09 0.52 2.91 0.80 2.62 0.68 2.25 0.56 3.06 0.84 2.77 0.72 2.42 0.60 2.05 0.48 3.20 0.88 2.93 0.76 2.58 0.64 2.22 0.52 3.35 0.92 3.08 0.80 2.74 0.68 2.39 0.56 1.97 0.44 3.49 0.96 3.23 0.84 2.90 0.72 2.56 0.60 2.15 0.48 3.64 1.00 3.39 0.88 3.06 0.76 2.73 0.64 2.33 0.52 3.64 1.00 3.54 0.92 3.22 0.80 2.90 0.68 2.51 0.56 3.64 1.00 3.70 0.96 3.38 0.84 3.07 0.72 2.69 0.60 3.64 1.00 3.85 1.00 3.54 0.88 3.25 0.76 2.87 0.64 3.64 1.00 3.85 1.00 3.70 0.92 3.42 0.80 3.05 0.68
INPUT 754 779 754 779 812 754 779 812 754 779 812 853 754 779 812 853 754 779 812 853 877 754 779 812 853 877 754 779 812 853 877 754 779 812 853 877 754 779 812 853 877 754 779 812 853 877 754 779 812 853 877
OBH767B
29
PERFORMANCE DATA COOL operation at Rated frequency
MUZ-LN35VG
CAPACITY: 3.5 kW
SHF: 0.90
INPUT: 820 W
OUTDOOR DB (°C)
INDOOR INDOOR DB (°C) WB (°C)
35
40
46
Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT
21
18 3.43 2.47 0.72 804 3.15 2.27 0.72 853 2.91 2.09 0.72 886
21
20 3.61 2.16 0.60 836 3.36 2.02 0.60 877 3.12 1.87 0.60 927
22
18 3.43 2.61 0.76 804 3.15 2.39 0.76 853 2.91 2.21 0.76 886
22
20 3.61 2.31 0.64 836 3.36 2.15 0.64 877 3.12 1.99 0.64 927
22
22 3.82 1.98 0.52 869 3.57 1.86 0.52 918 3.33 1.73 0.52 951
23
18 3.43 2.74 0.80 804 3.15 2.52 0.80 853 2.91 2.32 0.80 886
23
20 3.61 2.45 0.68 836 3.36 2.28 0.68 877 3.12 2.12 0.68 927
23
22 3.82 2.14 0.56 869 3.57 2.00 0.56 918 3.33 1.86 0.56 951
24
18 3.43 2.88 0.84 804 3.15 2.65 0.84 853 2.91 2.44 0.84 886
24
20 3.61 2.60 0.72 836 3.36 2.42 0.72 877 3.12 2.24 0.72 927
24
22 3.82 2.29 0.60 869 3.57 2.14 0.60 918 3.33 2.00 0.60 951
24
24 4.03 1.93 0.48 902 3.78 1.81 0.48 943 3.57 1.71 0.48 984
25
18 3.43 3.02 0.88 804 3.15 2.77 0.88 853 2.91 2.56 0.88 886
25
20 3.61 2.74 0.76 836 3.36 2.55 0.76 877 3.12 2.37 0.76 927
25
22 3.82 2.44 0.64 869 3.57 2.28 0.64 918 3.33 2.13 0.64 951
25
24 4.03 2.09 0.52 902 3.78 1.97 0.52 943 3.57 1.86 0.52 984
26
18 3.43 3.16 0.92 804 3.15 2.90 0.92 853 2.91 2.67 0.92 886
26
20 3.61 2.88 0.80 836 3.36 2.69 0.80 877 3.12 2.49 0.80 927
26
22 3.82 2.59 0.68 869 3.57 2.43 0.68 918 3.33 2.26 0.68 951
26
24 4.03 2.25 0.56 902 3.78 2.12 0.56 943 3.57 2.00 0.56 984
26
26 4.24 1.86 0.44 935 3.99 1.76 0.44 976 3.75 1.65 0.44 1017
27
18 3.43 3.29 0.96 804 3.15 3.02 0.96 853 2.91 2.79 0.96 886
27
20 3.61 3.03 0.84 836 3.36 2.82 0.84 877 3.12 2.62 0.84 927
27
22 3.82 2.75 0.72 869 3.57 2.57 0.72 918 3.33 2.39 0.72 951
27
24 4.03 2.42 0.60 902 3.78 2.27 0.60 943 3.57 2.14 0.60 984
27
26 4.24 2.03 0.48 935 3.99 1.92 0.48 976 3.75 1.80 0.48 1017
28
18 3.43 3.43 1.00 804 3.15 3.15 1.00 853 2.91 2.91 1.00 886
28
20 3.61 3.17 0.88 836 3.36 2.96 0.88 877 3.12 2.74 0.88 927
28
22 3.82 2.90 0.76 869 3.57 2.71 0.76 918 3.33 2.53 0.76 951
28
24 4.03 2.58 0.64 902 3.78 2.42 0.64 943 3.57 2.28 0.64 984
28
26 4.24 2.20 0.52 935 3.99 2.07 0.52 976 3.75 1.95 0.52 1017
29
18 3.43 3.43 1.00 804 3.15 3.15 1.00 853 2.91 2.91 1.00 886
29
20 3.61 3.32 0.92 836 3.36 3.09 0.92 877 3.12 2.87 0.92 927
29
22 3.82 3.05 0.80 869 3.57 2.86 0.80 918 3.33 2.66 0.80 951
29
24 4.03 2.74 0.68 902 3.78 2.57 0.68 943 3.57 2.43 0.68 984
29
26 4.24 2.37 0.56 935 3.99 2.23 0.56 976 3.75 2.10 0.56 1017
30
18 3.43 3.43 1.00 804 3.15 3.15 1.00 853 2.91 2.91 1.00 886
30
20 3.61 3.46 0.96 836 3.36 3.23 0.96 877 3.12 2.99 0.96 927
30
22 3.82 3.20 0.84 869 3.57 3.00 0.84 918 3.33 2.79 0.84 951
30
24 4.03 2.90 0.72 902 3.78 2.72 0.72 943 3.57 2.57 0.72 984
30
26 4.24 2.54 0.60 935 3.99 2.39 0.60 976 3.75 2.25 0.60 1017
31
18 3.43 3.43 1.00 804 3.15 3.15 1.00 853 2.91 2.91 1.00 886
31
20 3.61 3.61 1.00 836 3.36 3.36 1.00 877 3.12 3.12 1.00 927
31
22 3.82 3.36 0.88 869 3.57 3.14 0.88 918 3.33 2.93 0.88 951
31
24 4.03 3.06 0.76 902 3.78 2.87 0.76 943 3.57 2.71 0.76 984
31
26 4.24 2.71 0.64 935 3.99 2.55 0.64 976 3.75 2.40 0.64 1017
32
18 3.43 3.43 1.00 804 3.15 3.15 1.00 853 2.91 2.91 1.00 886
32
20 3.61 3.61 1.00 836 3.36 3.36 1.00 877 3.12 3.12 1.00 927
32
22 3.82 3.51 0.92 869 3.57 3.28 0.92 918 3.33 3.06 0.92 951
32
24 4.03 3.22 0.80 902 3.78 3.02 0.80 943 3.57 2.86 0.80 984
32
26 4.24 2.88 0.68 935 3.99 2.71 0.68 976 3.75 2.55 0.68 1017
NOTE Q : Total capacity (kW)
SHF : Sensible heat factor DB : Dry-bulb temperature
SHC : Sensible heat capacity (kW) INPUT : Total power input (W) WB : Wet-bulb temperature
OBH767B
30
PERFORMANCE DATA COOL operation at Rated frequency
MUZ-LN35VG2
CAPACITY: 3.5 kW
SHF: 0.90
INPUT: 820 W
OUTDOOR DB (°C)
INDOOR INDOOR DB (°C) WB (°C)
21
25
27
Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT Q
21
18 4.11 2.96 0.72 656 3.94 2.84 0.72 689 3.78 2.72 0.72 722 3.64
21
20 4.29 2.57 0.60 689 4.11 2.47 0.60 730 3.99 2.39 0.60 746 3.85
22
18 4.11 3.13 0.76 656 3.94 2.99 0.76 689 3.78 2.87 0.76 722 3.64
22
20 4.29 2.74 0.64 689 4.11 2.63 0.64 730 3.99 2.55 0.64 746 3.85
22
22 4.46 2.32 0.52 713 4.31 2.24 0.52 759 4.20 2.18 0.52 779 4.03
23
18 4.11 3.29 0.80 656 3.94 3.15 0.80 689 3.78 3.02 0.80 722 3.64
23
20 4.29 2.92 0.68 689 4.11 2.80 0.68 730 3.99 2.71 0.68 746 3.85
23
22 4.46 2.50 0.56 713 4.31 2.41 0.56 759 4.20 2.35 0.56 779 4.03
24
18 4.11 3.45 0.84 656 3.94 3.31 0.84 689 3.78 3.18 0.84 722 3.64
24
20 4.29 3.09 0.72 689 4.11 2.96 0.72 730 3.99 2.87 0.72 746 3.85
24
22 4.46 2.68 0.60 713 4.31 2.58 0.60 759 4.20 2.52 0.60 779 4.03
24
24 4.69 2.25 0.48 746 4.52 2.17 0.48 787 4.41 2.12 0.48 812 4.27
25
18 4.11 3.62 0.88 656 3.94 3.47 0.88 689 3.78 3.33 0.88 722 3.64
25
20 4.29 3.26 0.76 689 4.11 3.13 0.76 730 3.99 3.03 0.76 746 3.85
25
22 4.46 2.86 0.64 713 4.31 2.76 0.64 759 4.20 2.69 0.64 779 4.03
25
24 4.69 2.44 0.52 746 4.52 2.35 0.52 787 4.41 2.29 0.52 812 4.27
26
18 4.11 3.78 0.92 656 3.94 3.62 0.92 689 3.78 3.48 0.92 722 3.64
26
20 4.29 3.43 0.80 689 4.11 3.29 0.80 730 3.99 3.19 0.80 746 3.85
26
22 4.46 3.03 0.68 713 4.31 2.93 0.68 759 4.20 2.86 0.68 779 4.03
26
24 4.69 2.63 0.56 746 4.52 2.53 0.56 787 4.41 2.47 0.56 812 4.27
26
26 4.83 2.13 0.44 787 4.69 2.06 0.44 828 4.62 2.03 0.44 853 4.48
27
18 4.11 3.95 0.96 656 3.94 3.78 0.96 689 3.78 3.63 0.96 722 3.64
27
20 4.29 3.60 0.84 689 4.11 3.45 0.84 730 3.99 3.35 0.84 746 3.85
27
22 4.46 3.21 0.72 713 4.31 3.10 0.72 759 4.20 3.02 0.72 779 4.03
27
24 4.69 2.81 0.60 746 4.52 2.71 0.60 787 4.41 2.65 0.60 812 4.27
27
26 4.83 2.32 0.48 787 4.69 2.25 0.48 828 4.62 2.22 0.48 853 4.48
28
18 4.11 4.11 1.00 656 3.94 3.94 1.00 689 3.78 3.78 1.00 722 3.64
28
20 4.29 3.77 0.88 689 4.11 3.62 0.88 730 3.99 3.51 0.88 746 3.85
28
22 4.46 3.39 0.76 713 4.31 3.27 0.76 759 4.20 3.19 0.76 779 4.03
28
24 4.69 3.00 0.64 746 4.52 2.89 0.64 787 4.41 2.82 0.64 812 4.27
28
26 4.83 2.51 0.52 787 4.69 2.44 0.52 828 4.62 2.40 0.52 853 4.48
29
18 4.11 4.11 1.00 656 3.94 3.94 1.00 689 3.78 3.78 1.00 722 3.64
29
20 4.29 3.94 0.92 689 4.11 3.78 0.92 730 3.99 3.67 0.92 746 3.85
29
22 4.46 3.57 0.80 713 4.31 3.44 0.80 759 4.20 3.36 0.80 779 4.03
29
24 4.69 3.19 0.68 746 4.52 3.07 0.68 787 4.41 3.00 0.68 812 4.27
29
26 4.83 2.70 0.56 787 4.69 2.63 0.56 828 4.62 2.59 0.56 853 4.48
30
18 4.11 4.11 1.00 656 3.94 3.94 1.00 689 3.78 3.78 1.00 722 3.64
30
20 4.29 4.12 0.96 689 4.11 3.95 0.96 730 3.99 3.83 0.96 746 3.85
30
22 4.46 3.75 0.84 713 4.31 3.62 0.84 759 4.20 3.53 0.84 779 4.03
30
24 4.69 3.38 0.72 746 4.52 3.25 0.72 787 4.41 3.18 0.72 812 4.27
30
26 4.83 2.90 0.60 787 4.69 2.81 0.60 828 4.62 2.77 0.60 853 4.48
31
18 4.11 4.11 1.00 656 3.94 3.94 1.00 689 3.78 3.78 1.00 722 3.64
31
20 4.29 4.29 1.00 689 4.11 4.11 1.00 730 3.99 3.99 1.00 746 3.85
31
22 4.46 3.93 0.88 713 4.31 3.79 0.88 759 4.20 3.70 0.88 779 4.03
31
24 4.69 3.56 0.76 746 4.52 3.43 0.76 787 4.41 3.35 0.76 812 4.27
31
26 4.83 3.09 0.64 787 4.69 3.00 0.64 828 4.62 2.96 0.64 853 4.48
32
18 4.11 4.11 1.00 656 3.94 3.94 1.00 689 3.78 3.78 1.00 722 3.64
32
20 4.29 4.29 1.00 689 4.11 4.11 1.00 730 3.99 3.99 1.00 746 3.85
32
22 4.46 4.11 0.92 713 4.31 3.96 0.92 759 4.20 3.86 0.92 779 4.03
32
24 4.69 3.75 0.80 746 4.52 3.61 0.80 787 4.41 3.53 0.80 812 4.27
32
26 4.83 3.28 0.68 787 4.69 3.19 0.68 828 4.62 3.14 0.68 853 4.48
NOTE Q : Total capacity (kW)
SHF : Sensible heat factor DB : Dry-bulb temperature
SHC : Sensible heat capacity (kW) INPUT : Total power input (W) WB : Wet-bulb temperature
30 SHC SHF 2.62 0.72 2.31 0.60 2.77 0.76 2.46 0.64 2.09 0.52 2.91 0.80 2.62 0.68 2.25 0.56 3.06 0.84 2.77 0.72 2.42 0.60 2.05 0.48 3.20 0.88 2.93 0.76 2.58 0.64 2.22 0.52 3.35 0.92 3.08 0.80 2.74 0.68 2.39 0.56 1.97 0.44 3.49 0.96 3.23 0.84 2.90 0.72 2.56 0.60 2.15 0.48 3.64 1.00 3.39 0.88 3.06 0.76 2.73 0.64 2.33 0.52 3.64 1.00 3.54 0.92 3.22 0.80 2.90 0.68 2.51 0.56 3.64 1.00 3.70 0.96 3.38 0.84 3.07 0.72 2.69 0.60 3.64 1.00 3.85 1.00 3.54 0.88 3.25 0.76 2.87 0.64 3.64 1.00 3.85 1.00 3.70 0.92 3.42 0.80 3.05 0.68
INPUT 754 779 754 779 812 754 779 812 754 779 812 853 754 779 812 853 754 779 812 853 877 754 779 812 853 877 754 779 812 853 877 754 779 812 853 877 754 779 812 853 877 754 779 812 853 877 754 779 812 853 877
OBH767B
31
PERFORMANCE DATA COOL operation at Rated frequency
MUZ-LN35VG2
CAPACITY: 3.5 kW
SHF: 0.90
INPUT: 820 W
OUTDOOR DB (°C)
INDOOR INDOOR DB (°C) WB (°C)
35
40
46
Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT
21
18 3.43 2.47 0.72 804 3.15 2.27 0.72 853 2.91 2.09 0.72 886
21
20 3.61 2.16 0.60 836 3.36 2.02 0.60 877 3.12 1.87 0.60 927
22
18 3.43 2.61 0.76 804 3.15 2.39 0.76 853 2.91 2.21 0.76 886
22
20 3.61 2.31 0.64 836 3.36 2.15 0.64 877 3.12 1.99 0.64 927
22
22 3.82 1.98 0.52 869 3.57 1.86 0.52 918 3.33 1.73 0.52 951
23
18 3.43 2.74 0.80 804 3.15 2.52 0.80 853 2.91 2.32 0.80 886
23
20 3.61 2.45 0.68 836 3.36 2.28 0.68 877 3.12 2.12 0.68 927
23
22 3.82 2.14 0.56 869 3.57 2.00 0.56 918 3.33 1.86 0.56 951
24
18 3.43 2.88 0.84 804 3.15 2.65 0.84 853 2.91 2.44 0.84 886
24
20 3.61 2.60 0.72 836 3.36 2.42 0.72 877 3.12 2.24 0.72 927
24
22 3.82 2.29 0.60 869 3.57 2.14 0.60 918 3.33 2.00 0.60 951
24
24 4.03 1.93 0.48 902 3.78 1.81 0.48 943 3.57 1.71 0.48 984
25
18 3.43 3.02 0.88 804 3.15 2.77 0.88 853 2.91 2.56 0.88 886
25
20 3.61 2.74 0.76 836 3.36 2.55 0.76 877 3.12 2.37 0.76 927
25
22 3.82 2.44 0.64 869 3.57 2.28 0.64 918 3.33 2.13 0.64 951
25
24 4.03 2.09 0.52 902 3.78 1.97 0.52 943 3.57 1.86 0.52 984
26
18 3.43 3.16 0.92 804 3.15 2.90 0.92 853 2.91 2.67 0.92 886
26
20 3.61 2.88 0.80 836 3.36 2.69 0.80 877 3.12 2.49 0.80 927
26
22 3.82 2.59 0.68 869 3.57 2.43 0.68 918 3.33 2.26 0.68 951
26
24 4.03 2.25 0.56 902 3.78 2.12 0.56 943 3.57 2.00 0.56 984
26
26 4.24 1.86 0.44 935 3.99 1.76 0.44 976 3.75 1.65 0.44 1017
27
18 3.43 3.29 0.96 804 3.15 3.02 0.96 853 2.91 2.79 0.96 886
27
20 3.61 3.03 0.84 836 3.36 2.82 0.84 877 3.12 2.62 0.84 927
27
22 3.82 2.75 0.72 869 3.57 2.57 0.72 918 3.33 2.39 0.72 951
27
24 4.03 2.42 0.60 902 3.78 2.27 0.60 943 3.57 2.14 0.60 984
27
26 4.24 2.03 0.48 935 3.99 1.92 0.48 976 3.75 1.80 0.48 1017
28
18 3.43 3.43 1.00 804 3.15 3.15 1.00 853 2.91 2.91 1.00 886
28
20 3.61 3.17 0.88 836 3.36 2.96 0.88 877 3.12 2.74 0.88 927
28
22 3.82 2.90 0.76 869 3.57 2.71 0.76 918 3.33 2.53 0.76 951
28
24 4.03 2.58 0.64 902 3.78 2.42 0.64 943 3.57 2.28 0.64 984
28
26 4.24 2.20 0.52 935 3.99 2.07 0.52 976 3.75 1.95 0.52 1017
29
18 3.43 3.43 1.00 804 3.15 3.15 1.00 853 2.91 2.91 1.00 886
29
20 3.61 3.32 0.92 836 3.36 3.09 0.92 877 3.12 2.87 0.92 927
29
22 3.82 3.05 0.80 869 3.57 2.86 0.80 918 3.33 2.66 0.80 951
29
24 4.03 2.74 0.68 902 3.78 2.57 0.68 943 3.57 2.43 0.68 984
29
26 4.24 2.37 0.56 935 3.99 2.23 0.56 976 3.75 2.10 0.56 1017
30
18 3.43 3.43 1.00 804 3.15 3.15 1.00 853 2.91 2.91 1.00 886
30
20 3.61 3.46 0.96 836 3.36 3.23 0.96 877 3.12 2.99 0.96 927
30
22 3.82 3.20 0.84 869 3.57 3.00 0.84 918 3.33 2.79 0.84 951
30
24 4.03 2.90 0.72 902 3.78 2.72 0.72 943 3.57 2.57 0.72 984
30
26 4.24 2.54 0.60 935 3.99 2.39 0.60 976 3.75 2.25 0.60 1017
31
18 3.43 3.43 1.00 804 3.15 3.15 1.00 853 2.91 2.91 1.00 886
31
20 3.61 3.61 1.00 836 3.36 3.36 1.00 877 3.12 3.12 1.00 927
31
22 3.82 3.36 0.88 869 3.57 3.14 0.88 918 3.33 2.93 0.88 951
31
24 4.03 3.06 0.76 902 3.78 2.87 0.76 943 3.57 2.71 0.76 984
31
26 4.24 2.71 0.64 935 3.99 2.55 0.64 976 3.75 2.40 0.64 1017
32
18 3.43 3.43 1.00 804 3.15 3.15 1.00 853 2.91 2.91 1.00 886
32
20 3.61 3.61 1.00 836 3.36 3.36 1.00 877 3.12 3.12 1.00 927
32
22 3.82 3.51 0.92 869 3.57 3.28 0.92 918 3.33 3.06 0.92 951
32
24 4.03 3.22 0.80 902 3.78 3.02 0.80 943 3.57 2.86 0.80 984
32
26 4.24 2.88 0.68 935 3.99 2.71 0.68 976 3.75 2.55 0.68 1017
NOTE Q : Total capacity (kW)
SHF : Sensible heat factor DB : Dry-bulb temperature
SHC : Sensible heat capacity (kW) INPUT : Total power input (W) WB : Wet-bulb temperature
OBH767B
32
PERFORMANCE DATA COOL operation at Rated frequency
MUZ-LN50VG MUZ-LN50VG2
CAPACITY: 5.0 kW
SHF: 0.77
INPUT: 1380 W
OUTDOOR DB (°C)
INDOOR INDOOR DB (°C) WB (°C)
21
25
27
Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT Q
21
18 5.88 3.47 0.59 1104 5.63 3.32 0.59 1159 5.40 3.19 0.59 1214 5.20
21
20 6.13 2.88 0.47 1159 5.88 2.76 0.47 1228 5.70 2.68 0.47 1256 5.50
22
18 5.88 3.70 0.63 1104 5.63 3.54 0.63 1159 5.40 3.40 0.63 1214 5.20
22
20 6.13 3.12 0.51 1159 5.88 3.00 0.51 1228 5.70 2.91 0.51 1256 5.50
22
22 6.38 2.49 0.39 1201 6.15 2.40 0.39 1277 6.00 2.34 0.39 1311 5.75
23
18 5.88 3.94 0.67 1104 5.63 3.77 0.67 1159 5.40 3.62 0.67 1214 5.20
23
20 6.13 3.37 0.55 1159 5.88 3.23 0.55 1228 5.70 3.14 0.55 1256 5.50
23
22 6.38 2.74 0.43 1201 6.15 2.64 0.43 1277 6.00 2.58 0.43 1311 5.75
24
18 5.88 4.17 0.71 1104 5.63 3.99 0.71 1159 5.40 3.83 0.71 1214 5.20
24
20 6.13 3.61 0.59 1159 5.88 3.47 0.59 1228 5.70 3.36 0.59 1256 5.50
24
22 6.38 3.00 0.47 1201 6.15 2.89 0.47 1277 6.00 2.82 0.47 1311 5.75
24
24 6.70 2.35 0.35 1256 6.45 2.26 0.35 1325 6.30 2.21 0.35 1366 6.10
25
18 5.88 4.41 0.75 1104 5.63 4.22 0.75 1159 5.40 4.05 0.75 1214 5.20
25
20 6.13 3.86 0.63 1159 5.88 3.70 0.63 1228 5.70 3.59 0.63 1256 5.50
25
22 6.38 3.25 0.51 1201 6.15 3.14 0.51 1277 6.00 3.06 0.51 1311 5.75
25
24 6.70 2.61 0.39 1256 6.45 2.52 0.39 1325 6.30 2.46 0.39 1366 6.10
26
18 5.88 4.64 0.79 1104 5.63 4.44 0.79 1159 5.40 4.27 0.79 1214 5.20
26
20 6.13 4.10 0.67 1159 5.88 3.94 0.67 1228 5.70 3.82 0.67 1256 5.50
26
22 6.38 3.51 0.55 1201 6.15 3.38 0.55 1277 6.00 3.30 0.55 1311 5.75
26
24 6.70 2.88 0.43 1256 6.45 2.77 0.43 1325 6.30 2.71 0.43 1366 6.10
26
26 6.90 2.14 0.31 1325 6.70 2.08 0.31 1394 6.60 2.05 0.31 1435 6.40
27
18 5.88 4.88 0.83 1104 5.63 4.67 0.83 1159 5.40 4.48 0.83 1214 5.20
27
20 6.13 4.35 0.71 1159 5.88 4.17 0.71 1228 5.70 4.05 0.71 1256 5.50
27
22 6.38 3.76 0.59 1201 6.15 3.63 0.59 1277 6.00 3.54 0.59 1311 5.75
27
24 6.70 3.15 0.47 1256 6.45 3.03 0.47 1325 6.30 2.96 0.47 1366 6.10
27
26 6.90 2.42 0.35 1325 6.70 2.35 0.35 1394 6.60 2.31 0.35 1435 6.40
28
18 5.88 5.11 0.87 1104 5.63 4.89 0.87 1159 5.40 4.70 0.87 1214 5.20
28
20 6.13 4.59 0.75 1159 5.88 4.41 0.75 1228 5.70 4.28 0.75 1256 5.50
28
22 6.38 4.02 0.63 1201 6.15 3.87 0.63 1277 6.00 3.78 0.63 1311 5.75
28
24 6.70 3.42 0.51 1256 6.45 3.29 0.51 1325 6.30 3.21 0.51 1366 6.10
28
26 6.90 2.69 0.39 1325 6.70 2.61 0.39 1394 6.60 2.57 0.39 1435 6.40
29
18 5.88 5.35 0.91 1104 5.63 5.12 0.91 1159 5.40 4.91 0.91 1214 5.20
29
20 6.13 4.84 0.79 1159 5.88 4.64 0.79 1228 5.70 4.50 0.79 1256 5.50
29
22 6.38 4.27 0.67 1201 6.15 4.12 0.67 1277 6.00 4.02 0.67 1311 5.75
29
24 6.70 3.69 0.55 1256 6.45 3.55 0.55 1325 6.30 3.47 0.55 1366 6.10
29
26 6.90 2.97 0.43 1325 6.70 2.88 0.43 1394 6.60 2.84 0.43 1435 6.40
30
18 5.88 5.58 0.95 1104 5.63 5.34 0.95 1159 5.40 5.13 0.95 1214 5.20
30
20 6.13 5.08 0.83 1159 5.88 4.88 0.83 1228 5.70 4.73 0.83 1256 5.50
30
22 6.38 4.53 0.71 1201 6.15 4.37 0.71 1277 6.00 4.26 0.71 1311 5.75
30
24 6.70 3.95 0.59 1256 6.45 3.81 0.59 1325 6.30 3.72 0.59 1366 6.10
30
26 6.90 3.24 0.47 1325 6.70 3.15 0.47 1394 6.60 3.10 0.47 1435 6.40
31
18 5.88 5.82 0.99 1104 5.63 5.57 0.99 1159 5.40 5.35 0.99 1214 5.20
31
20 6.13 5.33 0.87 1159 5.88 5.11 0.87 1228 5.70 4.96 0.87 1256 5.50
31
22 6.38 4.78 0.75 1201 6.15 4.61 0.75 1277 6.00 4.50 0.75 1311 5.75
31
24 6.70 4.22 0.63 1256 6.45 4.06 0.63 1325 6.30 3.97 0.63 1366 6.10
31
26 6.90 3.52 0.51 1325 6.70 3.42 0.51 1394 6.60 3.37 0.51 1435 6.40
32
18 5.88 5.88 1.00 1104 5.63 5.63 1.00 1159 5.40 5.40 1.00 1214 5.20
32
20 6.13 5.57 0.91 1159 5.88 5.35 0.91 1228 5.70 5.19 0.91 1256 5.50
32
22 6.38 5.04 0.79 1201 6.15 4.86 0.79 1277 6.00 4.74 0.79 1311 5.75
32
24 6.70 4.49 0.67 1256 6.45 4.32 0.67 1325 6.30 4.22 0.67 1366 6.10
32
26 6.90 3.80 0.55 1325 6.70 3.69 0.55 1394 6.60 3.63 0.55 1435 6.40
NOTE Q : Total capacity (kW)
SHF : Sensible heat factor DB : Dry-bulb temperature
SHC : Sensible heat capacity (kW) INPUT : Total power input (W) WB : Wet-bulb temperature
30 SHC SHF 3.07 0.59 2.59 0.47 3.28 0.63 2.81 0.51 2.24 0.39 3.48 0.67 3.03 0.55 2.47 0.43 3.69 0.71 3.25 0.59 2.70 0.47 2.14 0.35 3.90 0.75 3.47 0.63 2.93 0.51 2.38 0.39 4.11 0.79 3.69 0.67 3.16 0.55 2.62 0.43 1.98 0.31 4.32 0.83 3.91 0.71 3.39 0.59 2.87 0.47 2.24 0.35 4.52 0.87 4.13 0.75 3.62 0.63 3.11 0.51 2.50 0.39 4.73 0.91 4.35 0.79 3.85 0.67 3.36 0.55 2.75 0.43 4.94 0.95 4.57 0.83 4.08 0.71 3.60 0.59 3.01 0.47 5.15 0.99 4.79 0.87 4.31 0.75 3.84 0.63 3.26 0.51 5.20 1.00 5.01 0.91 4.54 0.79 4.09 0.67 3.52 0.55
INPUT 1270 1311 1270 1311 1366 1270 1311 1366 1270 1311 1366 1435 1270 1311 1366 1435 1270 1311 1366 1435 1477 1270 1311 1366 1435 1477 1270 1311 1366 1435 1477 1270 1311 1366 1435 1477 1270 1311 1366 1435 1477 1270 1311 1366 1435 1477 1270 1311 1366 1435 1477
OBH767B
33
PERFORMANCE DATA COOL operation at Rated frequency
MUZ-LN50VG MUZ-LN50VG2
CAPACITY: 5.0 kW
SHF: 0.77
INPUT: 1380 W
OUTDOOR DB (°C)
INDOOR INDOOR DB (°C) WB (°C)
35
40
46
Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT
21
18 4.90 2.89 0.59 1352 4.50 2.66 0.59 1435 4.15 2.45 0.59 1490
21
20 5.15 2.42 0.47 1408 4.80 2.26 0.47 1477 4.45 2.09 0.47 1559
22
18 4.90 3.09 0.63 1352 4.50 2.84 0.63 1435 4.15 2.61 0.63 1490
22
20 5.15 2.63 0.51 1408 4.80 2.45 0.51 1477 4.45 2.27 0.51 1559
22
22 5.45 2.13 0.39 1463 5.10 1.99 0.39 1546 4.75 1.85 0.39 1601
23
18 4.90 3.28 0.67 1352 4.50 3.02 0.67 1435 4.15 2.78 0.67 1490
23
20 5.15 2.83 0.55 1408 4.80 2.64 0.55 1477 4.45 2.45 0.55 1559
23
22 5.45 2.34 0.43 1463 5.10 2.19 0.43 1546 4.75 2.04 0.43 1601
24
18 4.90 3.48 0.71 1352 4.50 3.20 0.71 1435 4.15 2.95 0.71 1490
24
20 5.15 3.04 0.59 1408 4.80 2.83 0.59 1477 4.45 2.63 0.59 1559
24
22 5.45 2.56 0.47 1463 5.10 2.40 0.47 1546 4.75 2.23 0.47 1601
24
24 5.75 2.01 0.35 1518 5.40 1.89 0.35 1587 5.10 1.79 0.35 1656
25
18 4.90 3.68 0.75 1352 4.50 3.38 0.75 1435 4.15 3.11 0.75 1490
25
20 5.15 3.24 0.63 1408 4.80 3.02 0.63 1477 4.45 2.80 0.63 1559
25
22 5.45 2.78 0.51 1463 5.10 2.60 0.51 1546 4.75 2.42 0.51 1601
25
24 5.75 2.24 0.39 1518 5.40 2.11 0.39 1587 5.10 1.99 0.39 1656
26
18 4.90 3.87 0.79 1352 4.50 3.56 0.79 1435 4.15 3.28 0.79 1490
26
20 5.15 3.45 0.67 1408 4.80 3.22 0.67 1477 4.45 2.98 0.67 1559
26
22 5.45 3.00 0.55 1463 5.10 2.81 0.55 1546 4.75 2.61 0.55 1601
26
24 5.75 2.47 0.43 1518 5.40 2.32 0.43 1587 5.10 2.19 0.43 1656
26
26 6.05 1.88 0.31 1573 5.70 1.77 0.31 1642 5.35 1.66 0.31 1711
27
18 4.90 4.07 0.83 1352 4.50 3.74 0.83 1435 4.15 3.44 0.83 1490
27
20 5.15 3.66 0.71 1408 4.80 3.41 0.71 1477 4.45 3.16 0.71 1559
27
22 5.45 3.22 0.59 1463 5.10 3.01 0.59 1546 4.75 2.80 0.59 1601
27
24 5.75 2.70 0.47 1518 5.40 2.54 0.47 1587 5.10 2.40 0.47 1656
27
26 6.05 2.12 0.35 1573 5.70 2.00 0.35 1642 5.35 1.87 0.35 1711
28
18 4.90 4.26 0.87 1352 4.50 3.92 0.87 1435 4.15 3.61 0.87 1490
28
20 5.15 3.86 0.75 1408 4.80 3.60 0.75 1477 4.45 3.34 0.75 1559
28
22 5.45 3.43 0.63 1463 5.10 3.21 0.63 1546 4.75 2.99 0.63 1601
28
24 5.75 2.93 0.51 1518 5.40 2.75 0.51 1587 5.10 2.60 0.51 1656
28
26 6.05 2.36 0.39 1573 5.70 2.22 0.39 1642 5.35 2.09 0.39 1711
29
18 4.90 4.46 0.91 1352 4.50 4.10 0.91 1435 4.15 3.78 0.91 1490
29
20 5.15 4.07 0.79 1408 4.80 3.79 0.79 1477 4.45 3.52 0.79 1559
29
22 5.45 3.65 0.67 1463 5.10 3.42 0.67 1546 4.75 3.18 0.67 1601
29
24 5.75 3.16 0.55 1518 5.40 2.97 0.55 1587 5.10 2.81 0.55 1656
29
26 6.05 2.60 0.43 1573 5.70 2.45 0.43 1642 5.35 2.30 0.43 1711
30
18 4.90 4.66 0.95 1352 4.50 4.28 0.95 1435 4.15 3.94 0.95 1490
30
20 5.15 4.27 0.83 1408 4.80 3.98 0.83 1477 4.45 3.69 0.83 1559
30
22 5.45 3.87 0.71 1463 5.10 3.62 0.71 1546 4.75 3.37 0.71 1601
30
24 5.75 3.39 0.59 1518 5.40 3.19 0.59 1587 5.10 3.01 0.59 1656
30
26 6.05 2.84 0.47 1573 5.70 2.68 0.47 1642 5.35 2.51 0.47 1711
31
18 4.90 4.85 0.99 1352 4.50 4.46 0.99 1435 4.15 4.11 0.99 1490
31
20 5.15 4.48 0.87 1408 4.80 4.18 0.87 1477 4.45 3.87 0.87 1559
31
22 5.45 4.09 0.75 1463 5.10 3.83 0.75 1546 4.75 3.56 0.75 1601
31
24 5.75 3.62 0.63 1518 5.40 3.40 0.63 1587 5.10 3.21 0.63 1656
31
26 6.05 3.09 0.51 1573 5.70 2.91 0.51 1642 5.35 2.73 0.51 1711
32
18 4.90 4.90 1.00 1352 4.50 4.50 1.00 1435 4.15 4.15 1.00 1490
32
20 5.15 4.69 0.91 1408 4.80 4.37 0.91 1477 4.45 4.05 0.91 1559
32
22 5.45 4.31 0.79 1463 5.10 4.03 0.79 1546 4.75 3.75 0.79 1601
32
24 5.75 3.85 0.67 1518 5.40 3.62 0.67 1587 5.10 3.42 0.67 1656
32
26 6.05 3.33 0.55 1573 5.70 3.14 0.55 1642 5.35 2.94 0.55 1711
NOTE Q : Total capacity (kW)
SHF : Sensible heat factor DB : Dry-bulb temperature
SHC : Sensible heat capacity (kW) INPUT : Total power input (W) WB : Wet-bulb temperature
OBH767B
34
PERFORMANCE DATA COOL operation at Rated frequency
MUZ-LN60VG
CAPACITY: 6.1 kW
SHF: 0.75
INPUT: 1790 W
OUTDOOR DB (°C)
INDOOR INDOOR DB (°C) WB (°C)
21
25
27
Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT Q
21
18 7.17 4.09 0.57 1432 6.86 3.91 0.57 1504 6.59 3.76 0.57 1575 6.34
21
20 7.47 3.36 0.45 1504 7.17 3.23 0.45 1593 6.95 3.13 0.45 1629 6.71
22
18 7.17 4.37 0.61 1432 6.86 4.19 0.61 1504 6.59 4.02 0.61 1575 6.34
22
20 7.47 3.66 0.49 1504 7.17 3.51 0.49 1593 6.95 3.41 0.49 1629 6.71
22
22 7.78 2.88 0.37 1557 7.50 2.78 0.37 1656 7.32 2.71 0.37 1701 7.01
23
18 7.17 4.66 0.65 1432 6.86 4.46 0.65 1504 6.59 4.28 0.65 1575 6.34
23
20 7.47 3.96 0.53 1504 7.17 3.80 0.53 1593 6.95 3.69 0.53 1629 6.71
23
22 7.78 3.19 0.41 1557 7.50 3.08 0.41 1656 7.32 3.00 0.41 1701 7.01
24
18 7.17 4.95 0.69 1432 6.86 4.74 0.69 1504 6.59 4.55 0.69 1575 6.34
24
20 7.47 4.26 0.57 1504 7.17 4.09 0.57 1593 6.95 3.96 0.57 1629 6.71
24
22 7.78 3.50 0.45 1557 7.50 3.38 0.45 1656 7.32 3.29 0.45 1701 7.01
24
24 8.17 2.70 0.33 1629 7.87 2.60 0.33 1718 7.69 2.54 0.33 1772 7.44
25
18 7.17 5.23 0.73 1432 6.86 5.01 0.73 1504 6.59 4.81 0.73 1575 6.34
25
20 7.47 4.56 0.61 1504 7.17 4.37 0.61 1593 6.95 4.24 0.61 1629 6.71
25
22 7.78 3.81 0.49 1557 7.50 3.68 0.49 1656 7.32 3.59 0.49 1701 7.01
25
24 8.17 3.02 0.37 1629 7.87 2.91 0.37 1718 7.69 2.84 0.37 1772 7.44
26
18 7.17 5.52 0.77 1432 6.86 5.28 0.77 1504 6.59 5.07 0.77 1575 6.34
26
20 7.47 4.86 0.65 1504 7.17 4.66 0.65 1593 6.95 4.52 0.65 1629 6.71
26
22 7.78 4.12 0.53 1557 7.50 3.98 0.53 1656 7.32 3.88 0.53 1701 7.01
26
24 8.17 3.35 0.41 1629 7.87 3.23 0.41 1718 7.69 3.15 0.41 1772 7.44
26
26 8.42 2.44 0.29 1718 8.17 2.37 0.29 1808 8.05 2.34 0.29 1862 7.81
27
18 7.17 5.81 0.81 1432 6.86 5.56 0.81 1504 6.59 5.34 0.81 1575 6.34
27
20 7.47 5.16 0.69 1504 7.17 4.95 0.69 1593 6.95 4.80 0.69 1629 6.71
27
22 7.78 4.43 0.57 1557 7.50 4.28 0.57 1656 7.32 4.17 0.57 1701 7.01
27
24 8.17 3.68 0.45 1629 7.87 3.54 0.45 1718 7.69 3.46 0.45 1772 7.44
27
26 8.42 2.78 0.33 1718 8.17 2.70 0.33 1808 8.05 2.66 0.33 1862 7.81
28
18 7.17 6.09 0.85 1432 6.86 5.83 0.85 1504 6.59 5.60 0.85 1575 6.34
28
20 7.47 5.45 0.73 1504 7.17 5.23 0.73 1593 6.95 5.08 0.73 1629 6.71
28
22 7.78 4.74 0.61 1557 7.50 4.58 0.61 1656 7.32 4.47 0.61 1701 7.01
28
24 8.17 4.01 0.49 1629 7.87 3.86 0.49 1718 7.69 3.77 0.49 1772 7.44
28
26 8.42 3.11 0.37 1718 8.17 3.02 0.37 1808 8.05 2.98 0.37 1862 7.81
29
18 7.17 6.38 0.89 1432 6.86 6.11 0.89 1504 6.59 5.86 0.89 1575 6.34
29
20 7.47 5.75 0.77 1504 7.17 5.52 0.77 1593 6.95 5.35 0.77 1629 6.71
29
22 7.78 5.06 0.65 1557 7.50 4.88 0.65 1656 7.32 4.76 0.65 1701 7.01
29
24 8.17 4.33 0.53 1629 7.87 4.17 0.53 1718 7.69 4.07 0.53 1772 7.44
29
26 8.42 3.45 0.41 1718 8.17 3.35 0.41 1808 8.05 3.30 0.41 1862 7.81
30
18 7.17 6.67 0.93 1432 6.86 6.38 0.93 1504 6.59 6.13 0.93 1575 6.34
30
20 7.47 6.05 0.81 1504 7.17 5.81 0.81 1593 6.95 5.63 0.81 1629 6.71
30
22 7.78 5.37 0.69 1557 7.50 5.18 0.69 1656 7.32 5.05 0.69 1701 7.01
30
24 8.17 4.66 0.57 1629 7.87 4.49 0.57 1718 7.69 4.38 0.57 1772 7.44
30
26 8.42 3.79 0.45 1718 8.17 3.68 0.45 1808 8.05 3.62 0.45 1862 7.81
31
18 7.17 6.95 0.97 1432 6.86 6.66 0.97 1504 6.59 6.39 0.97 1575 6.34
31
20 7.47 6.35 0.85 1504 7.17 6.09 0.85 1593 6.95 5.91 0.85 1629 6.71
31
22 7.78 5.68 0.73 1557 7.50 5.48 0.73 1656 7.32 5.34 0.73 1701 7.01
31
24 8.17 4.99 0.61 1629 7.87 4.80 0.61 1718 7.69 4.69 0.61 1772 7.44
31
26 8.42 4.12 0.49 1718 8.17 4.01 0.49 1808 8.05 3.95 0.49 1862 7.81
32
18 7.17 7.17 1.00 1432 6.86 6.86 1.00 1504 6.59 6.59 1.00 1575 6.34
32
20 7.47 6.65 0.89 1504 7.17 6.38 0.89 1593 6.95 6.19 0.89 1629 6.71
32
22 7.78 5.99 0.77 1557 7.50 5.78 0.77 1656 7.32 5.64 0.77 1701 7.01
32
24 8.17 5.31 0.65 1629 7.87 5.11 0.65 1718 7.69 5.00 0.65 1772 7.44
32
26 8.42 4.46 0.53 1718 8.17 4.33 0.53 1808 8.05 4.27 0.53 1862 7.81
NOTE Q : Total capacity (kW)
SHF : Sensible heat factor DB : Dry-bulb temperature
SHC : Sensible heat capacity (kW) INPUT : Total power input (W) WB : Wet-bulb temperature
30 SHC SHF 3.62 0.57 3.02 0.45 3.87 0.61 3.29 0.49 2.60 0.37 4.12 0.65 3.56 0.53 2.88 0.41 4.38 0.69 3.82 0.57 3.16 0.45 2.46 0.33 4.63 0.73 4.09 0.61 3.44 0.49 2.75 0.37 4.88 0.77 4.36 0.65 3.72 0.53 3.05 0.41 2.26 0.29 5.14 0.81 4.63 0.69 4.00 0.57 3.35 0.45 2.58 0.33 5.39 0.85 4.90 0.73 4.28 0.61 3.65 0.49 2.89 0.37 5.65 0.89 5.17 0.77 4.56 0.65 3.94 0.53 3.20 0.41 5.90 0.93 5.44 0.81 4.84 0.69 4.24 0.57 3.51 0.45 6.15 0.97 5.70 0.85 5.12 0.73 4.54 0.61 3.83 0.49 6.34 1.00 5.97 0.89 5.40 0.77 4.84 0.65 4.14 0.53
INPUT 1647 1701 1647 1701 1772 1647 1701 1772 1647 1701 1772 1862 1647 1701 1772 1862 1647 1701 1772 1862 1915 1647 1701 1772 1862 1915 1647 1701 1772 1862 1915 1647 1701 1772 1862 1915 1647 1701 1772 1862 1915 1647 1701 1772 1862 1915 1647 1701 1772 1862 1915
OBH767B
35
PERFORMANCE DATA COOL operation at Rated frequency
MUZ-LN60VG
CAPACITY: 6.1 kW
SHF: 0.75
INPUT: 1790 W
OUTDOOR DB (°C)
INDOOR INDOOR DB (°C) WB (°C)
35
40
46
Q SHC SHF INPUT Q SHC SHF INPUT Q SHC SHF INPUT
21
18 5.98 3.41 0.57 1754 5.49 3.13 0.57 1862 5.06 2.89 0.57 1933
21
20 6.28 2.83 0.45 1826 5.86 2.64 0.45 1915 5.43 2.44 0.45 2023
22
18 5.98 3.65 0.61 1754 5.49 3.35 0.61 1862 5.06 3.09 0.61 1933
22
20 6.28 3.08 0.49 1826 5.86 2.87 0.49 1915 5.43 2.66 0.49 2023
22
22 6.65 2.46 0.37 1897 6.22 2.30 0.37 2005 5.79 2.14 0.37 2076
23
18 5.98 3.89 0.65 1754 5.49 3.57 0.65 1862 5.06 3.29 0.65 1933
23
20 6.28 3.33 0.53 1826 5.86 3.10 0.53 1915 5.43 2.88 0.53 2023
23
22 6.65 2.73 0.41 1897 6.22 2.55 0.41 2005 5.79 2.38 0.41 2076
24
18 5.98 4.12 0.69 1754 5.49 3.79 0.69 1862 5.06 3.49 0.69 1933
24
20 6.28 3.58 0.57 1826 5.86 3.34 0.57 1915 5.43 3.09 0.57 2023
24
22 6.65 2.99 0.45 1897 6.22 2.80 0.45 2005 5.79 2.61 0.45 2076
24
24 7.01 2.31 0.33 1969 6.59 2.17 0.33 2059 6.22 2.05 0.33 2148
25
18 5.98 4.36 0.73 1754 5.49 4.01 0.73 1862 5.06 3.70 0.73 1933
25
20 6.28 3.83 0.61 1826 5.86 3.57 0.61 1915 5.43 3.31 0.61 2023
25
22 6.65 3.26 0.49 1897 6.22 3.05 0.49 2005 5.79 2.84 0.49 2076
25
24 7.01 2.60 0.37 1969 6.59 2.44 0.37 2059 6.22 2.30 0.37 2148
26
18 5.98 4.60 0.77 1754 5.49 4.23 0.77 1862 5.06 3.90 0.77 1933
26
20 6.28 4.08 0.65 1826 5.86 3.81 0.65 1915 5.43 3.53 0.65 2023
26
22 6.65 3.52 0.53 1897 6.22 3.30 0.53 2005 5.79 3.07 0.53 2076
26
24 7.01 2.88 0.41 1969 6.59 2.70 0.41 2059 6.22 2.55 0.41 2148
26
26 7.38 2.14 0.29 2041 6.95 2.02 0.29 2130 6.53 1.89 0.29 2220
27
18 5.98 4.84 0.81 1754 5.49 4.45 0.81 1862 5.06 4.10 0.81 1933
27
20 6.28 4.34 0.69 1826 5.86 4.04 0.69 1915 5.43 3.75 0.69 2023
27
22 6.65 3.79 0.57 1897 6.22 3.55 0.57 2005 5.79 3.30 0.57 2076
27
24 7.01 3.16 0.45 1969 6.59 2.96 0.45 2059 6.22 2.80 0.45 2148
27
26 7.38 2.44 0.33 2041 6.95 2.29 0.33 2130 6.53 2.15 0.33 2220
28
18 5.98 5.08 0.85 1754 5.49 4.67 0.85 1862 5.06 4.30 0.85 1933
28
20 6.28 4.59 0.73 1826 5.86 4.27 0.73 1915 5.43 3.96 0.73 2023
28
22 6.65 4.06 0.61 1897 6.22 3.80 0.61 2005 5.79 3.53 0.61 2076
28
24 7.01 3.44 0.49 1969 6.59 3.23 0.49 2059 6.22 3.05 0.49 2148
28
26 7.38 2.73 0.37 2041 6.95 2.57 0.37 2130 6.53 2.41 0.37 2220
29
18 5.98 5.32 0.89 1754 5.49 4.89 0.89 1862 5.06 4.51 0.89 1933
29
20 6.28 4.84 0.77 1826 5.86 4.51 0.77 1915 5.43 4.18 0.77 2023
29
22 6.65 4.32 0.65 1897 6.22 4.04 0.65 2005 5.79 3.77 0.65 2076
29
24 7.01 3.72 0.53 1969 6.59 3.49 0.53 2059 6.22 3.30 0.53 2148
29
26 7.38 3.03 0.41 2041 6.95 2.85 0.41 2130 6.53 2.68 0.41 2220
30
18 5.98 5.56 0.93 1754 5.49 5.11 0.93 1862 5.06 4.71 0.93 1933
30
20 6.28 5.09 0.81 1826 5.86 4.74 0.81 1915 5.43 4.40 0.81 2023
30
22 6.65 4.59 0.69 1897 6.22 4.29 0.69 2005 5.79 4.00 0.69 2076
30
24 7.01 4.00 0.57 1969 6.59 3.76 0.57 2059 6.22 3.55 0.57 2148
30
26 7.38 3.32 0.45 2041 6.95 3.13 0.45 2130 6.53 2.94 0.45 2220
31
18 5.98 5.80 0.97 1754 5.49 5.33 0.97 1862 5.06 4.91 0.97 1933
31
20 6.28 5.34 0.85 1826 5.86 4.98 0.85 1915 5.43 4.61 0.85 2023
31
22 6.65 4.85 0.73 1897 6.22 4.54 0.73 2005 5.79 4.23 0.73 2076
31
24 7.01 4.28 0.61 1969 6.59 4.02 0.61 2059 6.22 3.80 0.61 2148
31
26 7.38 3.62 0.49 2041 6.95 3.41 0.49 2130 6.53 3.20 0.49 2220
32
18 5.98 5.98 1.00 1754 5.49 5.49 1.00 1862 5.06 5.06 1.00 1933
32
20 6.28 5.59 0.89 1826 5.86 5.21 0.89 1915 5.43 4.83 0.89 2023
32
22 6.65 5.12 0.77 1897 6.22 4.79 0.77 2005 5.79 4.46 0.77 2076
32
24 7.01 4.56 0.65 1969 6.59 4.28 0.65 2059 6.22 4.04 0.65 2148
32
26 7.38 3.91 0.53 2041 6.95 3.69 0.53 2130 6.53 3.46 0.53 2220
NOTE Q : Total capacity (kW)
SHF : Sensible heat factor DB : Dry-bulb temperature
SHC : Sensible heat capacity (kW) INPUT : Total power input (W) WB : Wet-bulb temperature
OBH767B
36
PERFORMANCE DATA HEAT operation at Rated frequency
MUZ-LN25VG
CAPACITY: 3.2 kW
INPUT: 580 W
INDOOR DB (°C)
15 21 26
-10 Q INPUT 2.02 377 1.92 406 1.73 435
-5 Q INPUT 2.43 452 2.30 481 2.14 510
OUTDOOR WB (°C)
0
5
10
Q INPUT Q INPUT Q INPUT
2.85 510 3.26 551 3.68 586
2.72 534 3.10 574 3.52 603
2.53 563 2.94 603 3.36 632
15 Q INPUT 4.06 603 3.90 621 3.74 650
20 Q INPUT 4.48 615 4.30 644 4.16 667
MUZ-LN25VG2
CAPACITY: 3.2 kW
INPUT: 600 W
INDOOR DB (°C)
15 21 26
-10 Q INPUT 2.02 390 1.92 420 1.73 450
-5 Q INPUT 2.43 468 2.30 498 2.14 528
OUTDOOR WB (°C)
0
5
10
Q INPUT Q INPUT Q INPUT
2.85 528 3.26 570 3.68 606
2.72 552 3.10 594 3.52 624
2.53 582 2.94 624 3.36 654
15 Q INPUT 4.06 624 3.90 642 3.74 672
20 Q INPUT 4.48 636 4.30 666 4.16 690
MUZ-LN35VG
CAPACITY: 4.0 kW
INPUT: 800 W
INDOOR DB (°C)
15 21 26
-10 Q INPUT 2.52 520 2.40 560 2.16 600
-5 Q INPUT 3.04 624 2.88 664 2.68 704
OUTDOOR WB (°C)
0
5
10
Q INPUT Q INPUT Q INPUT
3.56 704 4.08 760 4.60 808
3.40 736 3.88 792 4.40 832
3.16 776 3.68 832 4.20 872
15 Q INPUT 5.08 832 4.88 856 4.68 896
20 Q INPUT 5.60 848 5.38 888 5.20 920
MUZ-LN35VG2
CAPACITY: 4.0 kW
INPUT: 820 W
INDOOR DB (°C)
15 21 26
-10 Q INPUT 2.52 533 2.40 574 2.16 615
-5 Q INPUT 3.04 640 2.88 681 2.68 722
OUTDOOR WB (°C)
0
5
10
Q INPUT Q INPUT Q INPUT
3.56 722 4.08 779 4.60 828
3.40 754 3.88 812 4.40 853
3.16 795 3.68 853 4.20 894
15 Q INPUT 5.08 853 4.88 877 4.68 918
20 Q INPUT 5.60 869 5.38 910 5.20 943
MUZ-LN50VG MUZ-LN50VG2
CAPACITY: 6.0 kW
INPUT: 1480 W
INDOOR DB (°C)
15 21 26
-10 Q INPUT 3.78 962 3.60 1036 3.24 1110
-5 Q INPUT 4.56 1154 4.32 1228 4.02 1302
OUTDOOR WB (°C)
0
5
10
Q INPUT Q INPUT Q INPUT
5.34 1302 6.12 1406 6.90 1495
5.10 1362 5.82 1465 6.60 1539
4.74 1436 5.52 1539 6.30 1613
15 Q INPUT 7.62 1539 7.32 1584 7.02 1658
20 Q INPUT 8.40 1569 8.07 1643 7.80 1702
MUZ-LN60VG
CAPACITY: 6.8 kW
INPUT: 1810 W
INDOOR DB (°C)
15 21 26
-10 Q INPUT 4.28 1177 4.08 1267 3.67 1358
-5 Q INPUT 5.17 1412 4.90 1502 4.56 1593
OUTDOOR WB (°C)
0
5
10
Q INPUT Q INPUT Q INPUT
6.05 1593 6.94 1720 7.82 1828
5.78 1665 6.60 1792 7.48 1882
5.37 1756 6.26 1882 7.14 1973
15 Q INPUT 8.64 1882 8.30 1937 7.96 2027
20 Q INPUT 9.52 1919 9.15 2009 8.84 2082
NOTE: Q: Total capacity (kW) INPUT : Total power input (W) DB: Dry-bulb temperature WB: Wet-bulb temperature
OBH767B
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10 ACTUATOR CONTROL
MUZ-LN25VG MUZ-LN35VG MUZ-LN50VG MUZ-LN60VG MUZ-LN25VG2 MUZ-LN35VG2 MUZ- LN50VG2
10-1. OUTDOOR FAN MOTOR CONTROL The fan motor turns ON/OFF, interlocking with the compressor. [ON] The fan motor turns ON 5 seconds before the compressor starts up. [OFF] The fan motor turns OFF 15 seconds after the compressor has stopped running.
ON Compressor
5 seconds
15 seconds
Outdoor fan motor
OFF ON
OFF
10-2. R.V. COIL CONTROL Heating . . . . . . . . . . . . . . . . . ON Cooling .
. . . . . . . . . . . . . . . . OFF Dry . . . . . . . . . . . . . . . . . . .
. OFF
NOTE: The 4-way valve reverses for 5 seconds right before startup of the
compressor.
5 seconds
5 seconds
ON Compressor OFF
R.V.coil
ON OFF
Outdoor fan ON
motor
OFF
10-3. RELATION BETWEEN MAIN SENSOR AND ACTUATOR
Sensor
Purpose
Actuator
Compressor
LEV
Outdoor fan motor
R.V. coil
Indoor fan motor
Discharge temperature thermistor
Protection
Indoor coil temperature thermistor
Cooling: Coil frost prevention
Heating: High pressure protection
Defrost thermistor Fin temperature thermistor
Heating: Defrosting Protection
Ambient temperature thermistor
Cooling: Low ambient temperature operation
Cooling: Low ambient temperaOutdoor heat exchanger tem- ture operation
perature thermistor
Cooling: High pressure protection
OBH767B
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11 SERVICE FUNCTIONS
MUZ-LN25VG MUZ-LN35VG MUZ-LN50VG MUZ-LN60VG MUZ-LN25VG2 MUZ-LN35VG2 MUZ- LN50VG2
11-1. CHANGE IN DEFROST SETTING
Changing defrost finish temperature
(Refer to 12-6.1)
Jumper wire
Defrost finish temperature (°C)
MUZ-LN25/35/50VG MUZ-LN25/35/50VG2
MUZ-LN60VG
JS
Soldered (Initial setting) None (Cut)
5 10
10 18
11-2. PRE-HEAT CONTROL SETTING PRE-HEAT CONTROL MUZ-LN25/35/50 When moisture
gets into the refrigerant cycle, it may interfere the startup of the
compressor at low outside temperature. The pre-heat control prevents this
interference. The pre-heat control turns ON when the discharge temperature
thermistor is 20°C or below. When the pre-heat control turns ON, the
compressor is energized. (About 50 W) MUZ-LN60 Prolonged low load operation,
in which the thermostat is OFF for a long time, at low outside temperature
(0°C or less) may cause the following troubles. To prevent those troubles,
activate the pre-heat control. 1) If moisture gets into the refrigerant cycle
and freezes, it may interfere the startup of the compressor. 2) If liquid
refrigerant collects in the compressor, a failure in the compressor may occur.
The pre-heat control turns ON when the compressor temperature is 20°C or
below. When the pre-heat control turns ON, the compressor is energized. (About
70 W)
Pre-heat control setting
NOTE: When the inverter P.C. board is replaced, check the jumper wires, and
cut/solder them if necessary.
OBH767B
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12 TROUBLESHOOTING
MUZ-LN25VG MUZ-LN35VG MUZ-LN50VG MUZ-LN60VG MUZ-LN25VG2 MUZ-LN35VG2 MUZ- LN50VG2
12-1. CAUTIONS ON TROUBLESHOOTING 1. Before troubleshooting, check the following 1) Check the power supply voltage. 2) Check the indoor/outdoor connecting wire for miswiring. 2. Take care of the following during servicing
- Before servicing the air conditioner, be sure to turn OFF the main unit first with the remote controller, and then after confirming the horizontal vane is closed, turn OFF the breaker and/or disconnect the power plug. 2) Be sure to turn OFF the power supply before removing the front panel, the cabinet, the top panel, and the electronic control P.C. board. 3) When removing the electrical parts, be careful of the residual voltage of smoothing capacitor. 4) When removing the electronic control P.C. board, hold the edge of the board with care NOT to apply stress on the components.
- When connecting or disconnecting the connectors, hold the connector housing. DO NOT pull the lead wires.
Lead wiring
Connector housing
3. Troubleshooting procedure 1) Check if the OPERATION INDICATOR lamp on the
indoor unit is blinking on and off to indicate an abnormality. To make sure,
check how many times the OPERATION INDICATOR lamp is blinking on and off
before starting service work.
2) Before servicing, check that the connector and terminal are connected
properly. 3) When the electronic control P.C. board seems to be defective,
check the copper foil pattern for disconnection and the
components for bursting and discoloration.
4) Refer to 12-2 and 12-3.
OBH767B
40
12-2. FAILURE MODE RECALL FUNCTION Outline of the function This air
conditioner can memorize the abnormal condition which has occurred once. Even
though LED indication listed on the troubleshooting check table (12-3.)
disappears, the memorized failure details can be recalled.
1. Flow chart of failure mode recall function for the indoor/outdoor unit
MSZ-LN25/35VG MSZ-LN50/60VG
Operational procedure
The cause of abnormality cannot be found because the abnormality does not
recur.
Setting up the failure mode recall function
Turn ON the power supply.
While pressing OPERATION SELECT button and TEMP button on the remote
controller at the same time, press RESET button. First, release RESET button.
Hold down the other 2 buttons for another 3 seconds. Make sure that the
indicators on the LCD screen shown in the right figure are all displayed. Then
release the buttons.
Press STOP/OPERATE (OFF/ON) button of the remote controller (the set temperature is displayed) with the remote controller headed towards the indoor unit. 1
1. Regardless of normal or abnormal condition, a short beep is emitted once
the signal is
received.
Does POWER lamp on the indoor unit blink at the interval of 0.5 seconds?
Blinks: Either indoor or outdoor unit is abnormal. Beep is
emitted at the same timing as the blinking of POWER lamp. 2
Judgment of indoor/outdoor abnormality
Yes (Blinks)
No (OFF)
Indoor unit is normal. But the outdoor unit might be abnormal because there
are some abnormalities that cannot be recalled with this way.
Check if outdoor unit is abnormal according to the detailed outdoor unit
failure mode recall function. (Refer to 12-2.2)
Before blinking, does POWER lamp stay ON for 3 seconds?
When it stays ON for 3 seconds (without beep): The outdoor unit is abnormal.
Yes
No
The indoor unit is abnormal. Check the blinking pattern, and identify the abnormal point by referring to the indoor unit failure recall mode table. (Refer to indoor unit service manual.) Make sure to check at least two consecutive blinking cycles. 2
The outdoor unit is abnormal. Check the blinking pattern, and identify the abnormal point by referring to the outdoor unit failure recall mode table. (Refer to 12-2.3) Make sure to check at least 2 consecutive blinking cycles. 3
Releasing the failure mode recall function
Release the failure mode recall function by the following procedures. Turn OFF
the power supply and turn it ON again. Press RESET button of the remote
controller.
Repair the failure parts.
Deleting the memorized abnormal condition
After repairing the unit, recall the failure mode again according to “Setting
up the failure mode recall function” mentioned above. Press STOP/OPERATE
(OFF/ON) button of the remote controller (the set temperature is displayed)
with the remote controller headed towards the indoor unit. Press EMERGENCY
OPERATION switch so that the memorized abnormal condition is deleted. 4
Release the failure mode recall function according to “Releasing the failure
mode recall function” mentioned above.
4 The information regarding whether the connected outdoor unit is a low- standby-power model or a nonlow-standby-power model will also be initialized. (Default= compatible with a low-standby-power model)
NOTE: 1. Make sure to release the failure mode recall function after it is set up, otherwise the unit cannot operate properly. 2. If the abnormal condition is not deleted from the memory, the last abnormal condition is kept memorized.
2. Blinking pattern when the indoor unit is abnormal:
Blinking at 0.5-
Blinking at 0.5-
2.5-second OFF second interval 2.5-second OFF second interval
ON OFF
Beeps
Beeps
Repeated cycle
Repeated cycle
3.Blinking pattern when the outdoor unit is abnormal:
Blinking at 0.5-
2.5-second OFF 3-second ON
second interval
2.5-second OFF
Beeps Repeated cycle
3-second ON
Blinking at 0.5second interval
ON
OFF
No beep
Beeps
Repeated cycle
No beep Repeated cycle
Beeps
Repeated cycle
OBH767B
41
2. Flow chart of the detailed outdoor unit failure mode recall function
Operational procedure
The outdoor unit might be abnormal. Check if outdoor unit is abnormal
according to the following procedures.
Make sure that the remote controller is set to the failure mode recall
function.
With the remote controller headed towards the indoor unit, press TEMP button to adjust the set temperature to 25°C. *1
Does POWER lamp on the indoor unit blink at the interval of 0.5 seconds?
Blinks: The outdoor unit is abnormal. Beep is emitted
at the same timing as the blinking of POWER lamp. *2
Yes (Blinks)
No (OFF)
The outdoor unit is abnormal.
Check the blinking pattern, and identify the abnormal point by referring to
the outdoor unit failure recall mode table (12-2.3.). Make sure to check at
least two consecutive blinking cycles. *2
*1. Regardless of normal or abnormal condition, 2 short beeps are emitted as the signal is received.
NOTE: It takes up to 1 minute to indicate the outdoor unit abnormality. Even
if POWER lamp is not lit, keep checking at least 1 minute or longer.
The outdoor unit is normal.
Releasing the failure mode recall function
Release the failure mode recall function by the following procedures. Turn OFF
the power supply and turn it ON again. Press RESET button of the remote
controller.
Release the failure mode recall function according to the left mentioned procedure.
Repair the failure parts.
Deleting the memorized abnormal condition
After repairing the unit, recall the failure mode again according to “Setting
up the failure mode recall function” (12-2.1.). Press STOP/OPERATE (OFF/ON)
button of the remote controller (the set temperature is displayed) with the
remote controller headed towards the indoor unit. Press EMERGENCY OPERATION
switch so that the memorized abnormal condition is deleted. *3 Release the
failure mode recall function according to “Releasing the failure mode recall
function” mentioned above.
*3 The information regarding whether the connected outdoor unit is a low-standbypower model or a non-low-standby-power model will also be initialized.
(Default= compatible with a low-standbypower model)
NOTE: 1. Make sure to release the failure mode recall function after it is set up, otherwise the unit cannot operate properly. 2. If the abnormal condition is not deleted from the memory, the last abnormal condition is kept memorized.
2.Blinking pattern when outdoor unit is abnormal:
ON OFF
2.5-second OFF 3-second ON
No beep Repeated cycle
Blinking at 0.5second interval
Beeps
2.5-second OFF 3-second ON
Blinking at 0.5second interval
No beep Repeated cycle
Beeps
Repeated cycle
OBH767B
42
3. Outdoor unit failure recall mode table
NOTE: Blinking patterns of this mode differ from the ones of TROUBLESHOOTING CHECK TABLE (12-3.).
POWER lamp
Abnormal point
LED indication
(Indoor unit) (Failure mode/protection) (Outdoor P.C. board)
Condition
Remedy
Indoor/outdoor unit failure mode recall function
Outdoor unit failure mode recall function
OFF
None (Normal)
—
—
—
—
—
1-time blink 2.5 seconds OFF
2-time blink 2.5 seconds OFF
Indoor/outdoor communication, receiving error
Indoor/outdoor communication, receiving error
Outdoor power system
Any signals from the inverter P.C.
·Refer to 12-5. How
—
board cannot be received normally for to check miswiring and
3 minutes. Although the inverter P.C. board
serial signal error. ·Refer to 12-5. How
—
sends signal “0”, signal “1” has been to check miswiring and
received 30 consecutive times.
serial signal error.
Overcurrent protection cut-out operates 3 consecutive times within
·Reconnect connectors.
—
1 minute after the compressor gets started.
·Refer to 12-5. “How to check inverter/
compressor”.
·Check stop valve.
3-time blink Discharge temperature 2.5 seconds thermistor
1-time blink every Thermistor shorts or opens during
2.5 seconds
compressor running.
·Refer to 12-5. “Check of outdoor
OFF
Defrost thermistor Fin temperature thermistor
P.C. board temperature thermistor Ambient temperature
3-time blink 2.5 seconds OFF
4-time blink 2.5 seconds OFF
2-time blink
thermistors”.
Defective outdoor
thermistors can be
identified by checking the blinking pattern of
LED.
thermistor
2.5 seconds OFF
Outdoor heat exchanger temperature thermistor
—
4-time blink Overcurrent 2.5 seconds
11-time blink
Large current flows into power module ·Reconnect
2.5 seconds OFF (IC700).
compressor connector.
OFF
·Refer to 12-5. “How to check inverter/
—
compressor”.
·Check stop valve.
Compressor synchronous 12-time blink
Waveform of compressor current is ·Reconnect
abnormality (Compressor startup failure protection)
2.5 seconds OFF distorted.
compressor connector.
·Refer to 12-5. “How
—
to check inverter/
compressor”.
5-time blink Discharge temperature 2.5 seconds OFF
Temperature of discharge temperature ·Check refrigerant
thermistor exceeds 116°C, compressor circuit and refrigerant
stops.
amount.
—
Compressor can restart if discharge ·Refer to 12-5. “Check
—
temperature thermistor reads 100°C or of LEV”.
less 3 minutes later.
6-time blink High pressure 2.5 seconds OFF
Temperature of indoor coil thermistor ·Check refrigerant
—
exceeds 70°C in HEAT mode. Temperature of defrost thermistor
circuit and refrigerant amount.
—
exceeds 70°C in COOL mode.
·Check stop valve.
7-time blink Fin temperature/P.C. board 7-time blink
Temperature of fin temperature thermistor ·Check around outdoor
2.5 seconds temperature
2.5 seconds OFF on the inverter P.C. board exceeds 75 ~ unit.
OFF
86°C (LN25/35/50) / 75 ~ 80°C (LN60), ·Check outdoor unit air
or temperature of P.C. board temperature passage.
—
thermistor on the inverter P.C. board
·Refer to 12-5. “Check
exceeds 72 ~ 85°C (LN25/35/50) / 70 ~ of outdoor fan motor”.
75°C (LN60).
8-time blink Outdoor fan motor 2.5 seconds OFF
Outdoor fan has stopped 3 times in a ·Refer to 12-5. “Check
—
row within 30 seconds after outdoor fan startup.
of outdoor fan motor”. Refer to 12-5. “Check
—
of inverter P.C. board”.
9-time blink Nonvolatile memory data
5-time blink
Nonvolatile memory data cannot be ·Replace the inverter
2.5 seconds
OFF
Power module (IC700)
2.5 seconds OFF
6-time blink 2.5 seconds OFF
read properly.
P.C. board.
The interface short circuit occurs in the ·Refer to 12-5. “How output of the power module (IC700). to check inverter/
The compressor winding shorts circuit. compressor”.
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POWER lamp
Abnormal point
(Indoor unit) (Failure mode/protection)
10-time blink Discharge temperature 2.5 seconds OFF
11-time blink 2.5 seconds OFF
14-time blink 2.5 seconds OFF
Bus-bar voltage (DC)
Each phase current of compressor Stop valve (Closed valve)
4-way valve/ Pipe temperature
NOTE: Blinking patterns of this mode differ from the ones of TROUBLESHOOTING CHECK TABLE (12-3.).
LED indication (Outdoor P.C. board)
Condition
Remedy
Indoor/outdoor unit failure mode recall function
Outdoor unit failure mode recall function
Temperature of discharge temperature ·Refer to 12-5. “Check
thermistor has been 50°C or less for of LEV”.
—
20 minutes.
·Check refrigerant
—
circuit and refrigerant
amount.
8-time blink
Bus-bar voltage of inverter cannot be ·Refer to 12-5. “How
2.5 seconds OFF 9-time blink
detected normally. Each phase current of compressor
to check inverter/ compressor”.
—
2.5 seconds OFF cannot be detected normally.
14-time blink
Closed valve is detected by
2.5 seconds OFF compressor current.
·Check stop valve.
16-time blink
The 4-way valve does not work
2.5 seconds OFF properly.
·Check the 4-way valve.
The indoor coil thermistor detects an ·Replace the inverter
abnormal temperature.
P.C. board.
16-time blink Outdoor refrigerant system 1-time blink
A closed valve and air trapped in the ·Check for a gas leak
2.5 seconds abnormality
2.5 seconds OFF refrigerant circuit are detected based in a connecting piping
OFF
on the temperature sensed by the
etc.
indoor and outdoor thermistors and the ·Check the stop valve.
current of the compressor.
·Refer to 12-5.
“Check of outdoor
refrigerant circuit”.
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12-3. TROUBLESHOOTING CHECK TABLE
No. Symptom
LED indication
Abnormal point/ Condition
Condition
Remedy
1-time blink every Outdoor power sys- Overcurrent protection cut-out operates 3 consecutive times ·Reconnect connector of compres-
2.5 seconds
tem
within 1 minute after the compressor gets started.
sor.
1
·Refer to 12-5. “How to check
inverter/compressor”.
·Check stop valve.
Outdoor thermistors Discharge temperature thermistor, fin temperature thermistor, ·Refer to 12-5. “Check of outdoor
2
defrost thermistor, P.C. board temperature thermistor, outdoor thermistors”. heat exchanger temperature thermistor or ambient tempera-
ture thermistor shorts or opens during compressor running.
Outdoor control sys- Nonvolatile memory data cannot be read properly.
·Replace inverter P.C. board.
3
tem
(POWER lamp of the indoor unit lights up or blinks 7-time.)
4
6-time blink
Serial signal
2.5 seconds OFF
The communication fails between the indoor and outdoor unit ·Refer to 12-5. “How to check
for 3 minutes.
miswiring and serial signal error.
5
11-time blink
Stop valve/
2.5 seconds OFF Closed valve
Closed valve is detected by compressor current.
·Check stop valve.
14-time blink
Outdoor unit
Outdoor unit is defective.
6
2.5 seconds OFF (Other abnormality)
·Refer to 12-2.2. “Flow chart of the detailed outdoor unit failure mode recall function”.
16-time blink
4-way valve/
The 4-way valve does not work properly.
·Refer to 12-5. “Check of R.V.
7
2.5 seconds OFF Pipe temperature The indoor coil thermistor detects an abnormal temperature. coil”.
·Replace the inverter P.C. board.
17-time blink
Outdoor refrigerant A closed valve and air trapped in the refrigerant circuit are
·Check for a gas leak in a
2.5 seconds OFF system abnormality detected based on the temperature sensed by the indoor and connecting piping etc.
outdoor thermistors and the current of the compressor.
·Check the stop valve.
8
·Refer to 12-5. “Check of outdoor
refrigerant circuit”.
‘Outdoor unit 2-time blink
Overcurrent protec- Large current flows into power module (IC700).
·Reconnect connector of compressor.
9
stops and restarts 3
2.5 seconds OFF tion
·Refer to 12-5. “How to check inverter/compressor”.
minutes later’
·Check stop valve.
is repeated. 3-time blink
Discharge tem-
Temperature of discharge temperature thermistor exceeds
·Check refrigerant circuit and refrig-
10
2.5 seconds OFF perature overheat 116°C, compressor stops. Compressor can restart if discharge erant amount.
protection
temperature thermistor reads 100°C or less 3 minutes later. ·Refer to 12-5. “Check of LEV”.
4-time blink
Fin temperature / Temperature of fin temperature thermistor on the heat sink ex- ·Check around outdoor unit.
2.5 seconds OFF P.C. board tem-
ceeds 75 ~ 86°C (LN25/35/50)/75 ~ 80°C (LN60) or tempera- ·Check outdoor unit air passage.
11
perature thermistor ture of P.C. board temperature thermistor on the inverter P.C. ·Refer to 12-5. “Check of outdoor
overheat protection board exceeds 72 ~ 85°C (LN25/35/50)/70 ~ 75°C (LN60).
fan motor”.
5-time blink
High pressure pro- Indoor coil thermistor exceeds 70°C in HEAT mode. Defrost ·Check refrigerant circuit and refrig-
12
2.5 seconds OFF tection
thermistor exceeds 70°C in COOL mode.
erant amount.
·Check stop valve.
8-time blink
Compressor syn- The waveform of compressor current is distorted.
·Reconnect connector of compressor.
13
2.5 seconds OFF chronous abnormal-
·Refer to 12-5. “How to check
ity
inverter/compressor”.
10-time blink
Outdoor fan motor Outdoor fan has stopped 3 times in a row within 30 seconds ·Refer to 12-5. “Check of outdoor
14
2.5 seconds OFF
after outdoor fan startup.
fan motor. ·Refer to 12-5. “Check of inverter
P.C. board.
15
12-time blink
Each phase current Each phase current of compressor cannot be detected nor-
2.5 seconds OFF of compressor
mally.
·Refer to 12-5. “How to check inverter/compressor”.
13-time blink
Bus-bar voltage
2.5 seconds OFF (DC)
Bus-bar voltage of inverter cannot be detected normally.
·It occurs with following case. Instantaneous power voltage drop. (Short time power failure) (LN60)
16
·Refer to 12-5. “Check of power supply”. (LN60)
·Refer to 12-5. “How to check inverter/compressor”.
Outdoor unit 1-time blink
Frequency drop by LN25/35/50
When the input current exceeds approximately The unit is normal, but check the
operates. 17
2.5 seconds OFF current protection
3-time blink
Frequency drop by
2.5 seconds OFF high pressure pro-
10A, compressor frequency lowers.
LN60
Current from power outlet is nearing breaker capacity.
Temperature of indoor coil thermistor exceeds 55°C in HEAT mode, compressor frequency lowers.
following. ·Check if indoor filters are clogged. ·Check if refrigerant is short. ·Check if indoor/outdoor unit air circulation is short cycled.
tection
18
Frequency drop by Indoor coil thermistor reads 8°C or less in COOL mode, com-
defrosting in COOL pressor frequency lowers.
mode
4-time blink
Frequency drop by Temperature of discharge temperature thermistor exceeds
·Check refrigerant circuit and refrig-
2.5 seconds OFF discharge tempera- 111°C, compressor frequency lowers.
erant amount.
19
ture protection
·Refer to 12-5. “Check of LEV”.
·Refer to 12-5. “Check of outdoor
thermistors”.
MUZ-LN25/35
Outside temperature When the outside temperature thermistor shorts or opens,
·Refer to 12-5. Check of outdoor
20
5-time blink
thermistor protec- protective operation without that thermistor is performed.
thermistors.
2.5 seconds OFF tion
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No. Symptom Outdoor unit
21 operates.
22
23
LED indication
Abnormal point/ Condition
Condition
7-time flash
Low discharge tem- Temperature of discharge temperature thermistor has been
2.5 seconds OFF perature protection 50°C or less for 20 minutes.
8-time flash 2.5 seconds OFF
MUZ-LN25/35/50 PAM protection PAM: Pulse Amplitude Modulation
The overcurrent flows into PFC (Power factor correction: IC820) or the bus-bar voltage reaches 394 V or more, PAM stops and restarts.
MUZ-LN60
Zero cross signal cannot be detected.
Zero cross detecting
circuit
9-time flash
Inverter check mode The connector of compressor is disconnected, inverter check
2.5 seconds OFF
mode starts.
Remedy
·Refer to 12-5. “Check of LEV”. ·Check refrigerant circuit and refrigerant
amount.
This is not malfunction. PAM protection will be activated in the following
cases: 1 Instantaneous power voltage
drop. (Short time power failure) 2 When the power supply voltage
is high. ·It occurs with following cases.
1 Instantaneous power voltage drop. (Short time power failure)
2 Distortion of primary voltage ·Refer to 12-5. “Check of power supply”.
·Check if the connector of the compressor is correctly connected. Refer to
12-5. “How to check inverter/compressor”.
NOTE: 1. The location of LED is illustrated at the right figure. Refer to 12-6.1. 2. LED is lit during normal operation.
The flashing frequency shows the number of times the LED blinks after every 2.5-second OFF. (Example) When the flashing frequency is “2”.
0.5-second ON
0.5-second ON
ON OFF
2.5-second OFF
2.5-second OFF
Inverter P.C. board MUZ-LN25/35/50VG MUZ-LN25/35/50VG2
Blinking LED
MUZ-LN60VG
Blinking
LED
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12-4. TROUBLE CRITERION OF MAIN PARTS
MUZ-LN25VG MUZ-LN35VG MUZ-LN50VG MUZ-LN60VG MUZ-LN25VG2 MUZ-LN35VG2 MUZ-
LN50VG2
Part name
Check method and criterion
Defrost thermistor (RT61) Measure the resistance with a tester.
Fin temperature thermistor (RT64)
Refer to 12-6. “Test point diagram and voltage”, 1. “Inverter P.C. board”, for the chart of thermistor.
Ambient temperature thermistor (RT65)
Outdoor heat exchanger temperature thermistor (RT68)
Discharge temperature thermistor (RT62)
Measure the resistance with a tester. Before measurement, hold the thermistor with your hands to warm it up. Refer to 12-6. “Test point diagram and voltage”, 1. “Inverter P.C. board”, for the chart of thermistor.
Compressor
Measure the resistance between terminals using a tester. (Temperature: -10 ~ 40°C)
Normal ()
MUZ-LN25VG MUZ-LN35VG MUZ-LN50VG MUZ-LN25VG2 MUZ-LN35VG2 MUZ-LN50VG2
MUZ-LN60VG
U-V
U-W 1.59 – 2.16 1.60 – 2.17 0.82 – 1.11 0.87 – 1.18
V-W
Measure the resistance between lead wires using a tester. (Temperature: -10 ~ 40°C)
Outdoor fan motor
Normal ()
Color of lead wire
MUZ-LN25/35/50VG MUZ-LN50VG2
MUZ-LN25/35VG2
RED BLK
BLK WHT
15 – 20
32 – 43
WHT RED
MUZ-LN60VG 25 – 34
Measure the resistance using a tester. (Temperature: -10 ~ 40°C)
R. V. coil (21S4)
Normal (k)
MUZ-LN25/35/50VG MUZ-LN25/35/50VG2
MUZ-LN60VG
1.41 – 2.00
1.17 – 1.66
Measure the resistance using a tester. (Temperature: -10 ~ 40°C)
Expansion valve coil (LEV)
Color of lead wire
RED ORN RED WHT RED BLU RED YLW
Normal () 37 – 54
Figure
WHT
RED BLK
W
V
U
WHT
RED BLK
W
V
U
WHT
LEV
ORN
RED (+12V)
YLW BLU
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12-5. TROUBLESHOOTING FLOW A How to check inverter/compressor
Disconnect the connector between the compressor and the power module (IC700).
Check the voltage between terminals.
Are the voltages balanced? Yes
Check the compressor.
See 12-5. “Check of open phase”.
No
Replace the inverter P.C. board.
See 12-5. “Check of compressor”.
B Check of open phase
With the connector between the compressor and the power module (IC700) disconnected, activate the inverter and check if the inverter is normal by measuring the voltage balance between the terminals.
Output voltage is 50 – 130 V. (The voltage may differ according to the tester.)
<< Operation method>>
Start cooling or heating operation by pressing EMERGENCY OPERATION switch on the indoor unit. (TEST RUN OPERA-
TION: Refer to 9-3.)
<
At 3 points
BLK (U)-WHT (V)
Measure AC voltage between the lead wires at 3 points.
BLK (U)-RED (W)
WHT(V)-RED (W)
NOTE: 1. Output voltage varies according to power supply voltage.
2. Measure the voltage by analog type tester. 3. During this check, LED of
the inverter P.C. board blinks 9 times. (Refer to 12-6.1.)
C Check of compressor
Refer to 12-5. “Check of compressor
winding”. Is the compressor normal?
No
Yes
Refer to 12-5. “Check of compressor
operation time”. Does the compressor operate continuously?
No
Yes
OK
Replace the compressor. Refer to 12-5. “Check of compressor start failure”.
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D Check of compressor winding
Disconnect the connector between the compressor and the power module (IC700), and measure the resistance between the
compressor terminals.
<
At 3 points
BLK-WHT BLK-RED
Measure the resistance between the lead wires at 3 points.
WHT-RED
<
Refer to 12-4.
0 [] ················Abnormal [short]
Infinite [] ·······Abnormal [open]
NOTE: Be sure to zero the ohmmeter before measurement.
E Check of compressor operation time
Connect the compressor and activate the inverter. Then measure the time until
the inverter stops due to overcurrent.
<
Start heating or cooling operation by pressing EMERGENCY OPERATION switch on
the indoor unit. (TEST RUN OPERATION: Refer to 9-3.) <
<
10 seconds
10 minutes
Compressor starts Abnormal (IC700 failure) (Compressor winding short) Abnormal
(Compressor lock out) (Starting defect) Abnormal (Poor contact) (Inverter P.C.
board defect) (Disconnected connector) Abnormal (Refrigerant circuit defect)
(Closed valve)
Normal
F Check of compressor start failure
Confirm that ~ is normal. ·Electrical circuit check
. Contact of the compressor connector
. Output voltage of inverter P.C. board and balance of them (See 12-5. ) .
Direct current voltage between DB61(+) and (-) (MUZ-LN25/35/50VG, MUZ-
LN25/35/50VG2)/IC700 (P) and (N) (MUZ-LN60VG) on the inverter P.C. board .
Voltage between outdoor terminal block S1-S2
Does the compressor run for 10 seconds or
more after it starts?
Yes
No
After the compressor is heated with a drier,
does the compressor start? 1
No
Yes
Compressor start failure. Activate pre-heat control. (Refer to 11-2. “PRE-HEAT CONTROL SETTING”)
Check the refrigerant circuit. Check the stop valve.
Replace the compressor.
1 Heat the compressor with a drier for about 20 minutes. Do not recover
refrigerant gas while heating.
Heating part
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G Check of outdoor thermistors
Disconnect the connector of thermistor in the inverter P.C. board (see below table), and measure the resistance of thermistor.
Is the resistance of thermistor normal? (Refer to 12-6.1.)
Yes
Replace the thermistor except RT64.
No
When RT64 is abnormal, replace the inverter P.C. board.
Reconnect the connector of thermistor. Turn ON the power supply and press EMERGENCY OPERATION switch.
Does the unit operate for 10 minutes or more
without showing thermistor abnormality?
No
Yes
OK (Cause is poor contact.)
Replace the inverter P.C. board.
MUZ-LN25/35/50VG MUZ-LN25/35/50VG2
Thermistor
Symbol
Connector, Pin No.
Defrost
RT61 Between CN641 pin1 and pin2
Discharge temperature
RT62 Between CN641 pin3 and pin4
Fin temperature
RT64 Between CN642 pin1 and pin2
Ambient temperature
RT65 Between CN643 pin1 and pin2
Outdoor heat exchanger temperature RT68 Between CN644 pin1 and pin3
MUZ-LN60VG
Thermistor
Symbol
Connector, Pin No.
Defrost
RT61 Between CN671 pin1 and pin2
Discharge temperature
RT62 Between CN671 pin3 and pin4
Fin temperature
RT64 Between CN673 pin1 and pin2
Ambient temperature
RT65 Between CN672 pin1 and pin2
Outdoor heat exchanger temperature RT68 Between CN671 pin5 and pin6
Board Inverter P.C. board
Board Inverter P.C. board
OBH767B
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H Check of R.V. coil
MUZ-LN25/35/50VG MUZ-LN25/35/50VG2
First of all, measure the resistance of R.V. coil to check if the coil is
defective. Refer to 12-4. In case CN721 is disconnected or R.V. coil is open,
voltage is generated between the terminal pins of the connector although no
signal is being transmitted to R.V. coil. Check if CN721 is connected.
Unit operates in COOL mode even if it is set to HEAT mode.
Disconnect connector between the
compressor and the IGBT module (IC700). Turn ON the power supply and press
EMERGENCY OPERATION switch twice (HEAT mode).
Is there 230 V AC between CN721 and
on the inverter P.C. board 3 minutes after the power supply is turned ON?
No
Yes
Replace the inverter P.C. board.
Replace the 4-way valve.
Unit operates in HEAT mode even if it is set to COOL mode.
Disconnect connector between the
compressor and the IGBT module (IC700). Turn ON the power supply and press
EMERGENCY OPERATION switch once (COOL mode).
Is there 230 V AC between CN721 and on the inverter P.C. board 3 minutes
after the power supply is turned ON?
Yes
Replace the inverter P.C. board.
No
Replace the 4-way valve.
MUZ-LN60VG
First of all, measure the resistance of R.V. coil to check if the coil is
defective. Refer to 11-4. In case CN602 is disconnected or R.V. coil is open,
voltage is generated between the terminal pins of the connector although no
signal is being transmitted to R.V. coil. Check if CN602 is connected.
Unit operates in COOL mode even if it is set to HEAT mode.
Disconnect connector between the
compressor and the power module
(IC700). Turn ON the power supply and press EMERGENCY OPERATION switch twice
(HEAT mode).
Is there 230 V AC between CN602 and
on the inverter P.C. board 3 minutes after the power supply is turned ON?
No
Yes
Replace the inverter P.C. board.
Replace the 4-way valve.
Unit operates in HEAT mode even if it is set to COOL mode.
Disconnect connector between the
compressor and the power module
(IC700). Turn ON the power supply and press EMERGENCY OPERATION switch once
(COOL mode).
Is there 230 V AC between CN602 and on the inverter P.C. board 3 minutes
after the power supply is turned ON?
Yes
Replace the inverter P.C. board.
No
Replace the 4-way valve.
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I Check of outdoor fan motor
Disconnect the connectors CN931 and CN932 from the inverter P.C. board. Check
the connection between the connector CN931 and CN932.
Is the resistance between each ter-
minal of outdoor fan motor normal? (Refer to 12-4.)
Yes
No
Disconnect CN932 from the inverter P.C. board, and turn on the power supply.
Rotate the outdoor fan motor manually and measure the voltage of CN931. Between 1(+) and 5(-) Between 2(+) and 5(-) Between 3(+) and 5(-)
(Fixed to either 5 or 0 V DC) No
No Replace the outdoor fan motor.
Does the voltage between each terminal become 5 and 0 V DC repeatedly?
Yes
Does the outdoor fan motor rotate smoothly? Yes
Replace the inverter P.C. board.
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J Check of power supply
Disconnect the connector between the
compressor and the power module
(IC700). Turn ON power supply and press EMERGENCY OPERATION switch.
Rectify indoor/outdoor connecting wire.
Does POWER lamp on the indoor
unit light up?
No
Yes
Is there bus-bar voltage 260 – 370 V
DC between DB61 (+) and DB61 ()
(MUZ-LN25/35/50VG, MUZ-
LN25/35/50VG2)/325 – 370 V DC
Yes
between IC700 (P) and (N)
(MUZ-LN60VG) on the inverter P.C.
board? (Refer to 12-6.1.)
No
Check the electric parts in main circuit.
Yes
Is there voltage 230 V AC between the indoor terminal block S1 and S2?
Replace the indoor
No
electronic control P.C. board.
Does LED on the inverter P.C. board light up or blink? (Refer to 12-6.1.)
No
Replace the inverter P.C. board.
Yes
If lights up, OK. If blinks, refer to 12-3.
DB61
260 – 370 V DC
Inverter P.C. board (Solder side)
MUZ-LN25/35/50VG MUZ-LN25/35/50VG2
325 -370 V DC
IC700
N
P
MUZ-LN60VG
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K Check of LEV (Expansion valve)
Turn ON the power supply.
While pressing both OPERATION SELECT button and TEMP button on the remote
controller at the same time, press RESET button. First, release RESET button.
Hold down the other 2 buttons for another 3 seconds. Make sure that the
indicators on the LCD screen shown in the right figure are all displayed. Then
release the buttons.
MSZ-LN25/35VG MSZ-LN50/60VG
Press STOP/OPERATE (OFF/ON) button of the remote controller (the set temperature is displayed) with the remote controller headed towards the indoor unit. 1
Expansion valve operates in full-opening direction.
Do you hear the expansion valve “click,
click·······”? Do you feel the expansion valve vibrate Yes
OK
when touching it ?
No
1. Regardless of normal or abnormal condition, a short beep is emitted once the signal is received.
Is LEV coil properly fix