MITSUBISHI ELECTRIC PEAD-A36AA8 Medium Static Ceiling Concealed Ducted Indoor Unit Installation Guide
- June 12, 2024
- Mitsubishi Electric
Table of Contents
- PEAD-A36AA8 Medium Static Ceiling Concealed Ducted Indoor Unit
- Safety precautions
- Selecting the installation location
- Selecting an installation site & Accessories
- Fixing hanging bolts
- Installing the unit
- Refrigerant piping work
- Duct work
- Electrical work
- Test run
- Easy maintenance function
- Maintenance
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)
Air-Conditioners
TPEADA0091,0121,0151,0181,0241,0301,0361AA80A
PEAD-A36AA8 Medium Static Ceiling Concealed Ducted Indoor Unit
INSTALLATION MANUAL
For safe and correct use, please read this installation manual thoroughly
before installing the air-conditioner unit.
KJ79P808H01
6 6.6
A Insert pump’s end 2 to 4 cm [13/16 to 1-5/8 in].
B Remove the water supply port.
C About 2500 cc
D Water
E Filling port
F Screw
7
A Duct
B Air inlet
C Access door
D Canvas duct
E Ceiling surfas
F Air outlet
G Leave distance enough to prevent short cycle
8 8.1
A Outdoor unit power supply
B Isolating switch
C Outdoor unit
D Indoor unit/outdoor unit connecting cords
E Wired remote controller
F Indoor unit
G Indoor controller board
H Radio frequency interface for RF thermostat
8 8.2
F Use PG bushing to keep the weight of the cable and external force from being
applied to the power supply terminal connector. Use a cable tie to secure the
cable.
G Power source wiring
H Use ordinary bushing
I Transmission wiring
J Conduit
K Side frame
L Knockout hole (for power source wiring)
M Washer (accessory)| N Terminal block for power source and indoor
transmission
O Terminal block for wired remote controller
P Indoor controller board
Q Radio frequency interface is installed on Indoor controller board
R CN105 (RED/5P)
S Wiring for radio frequency interface
---|---
A Indoor terminal block
B Earth wire (green/yellow)
C Indoor/outdoor unit connecting wire 3-core
1.5 mm2 [AWG 16] or more
D Outdoor terminal block 1 Connecting cable Cable 3-core 1.5 mm2 [AWG 16], in
conformity with Design 245 IEC 57.
2 Indoor terminal block
3 Outdoor terminal block| 4 Always install an earth wire (1-core 1.5 mm2
[AWG 16]) longer than other cables 5 Wired remote controller cable Wire No ×
size (mm 2 ) : Cable 2C × 0.3
This wire accessory of remote controller (wire length : 10 m [32 ft], non-
polar. Max.
500 m [1640 ft]) 6 Wired remote controller
---|---
8.3
11 11.1
A Indoor unit
B Union
C Liquid pipe
D Gas pipe
E Stop valve
F Outdoor unit
G Refrigerant gas cylinder operating valve| H Refrigerant gas cylinder for
R410A with siphon
I Refrigerant (liquid)
J Electronic scale for refrigerant charging
K Charge hose (for R410A)
L Gauge manifold valve (for R410A)
M Service port
---|---
This Installation Manual describes only for the indoor unit and the connected outdoor unit of TPUY and TRUZ series.
Safety precautions
- Please report to or take consent by the supply authority before connection to the system.
- Be sure to read “Safety precautions” before installing the air conditioner.
- Be sure to observe the cautions specified here as they include important items related to safety.
- The indications and meanings are as follows.
Warning:
Could lead to death, serious injury, etc.
Caution:
Could lead to serious injury in particular environments when operated
incorrectly.
- After reading this manual, be sure to keep it together with the instruction manual in a handy place on the customer’s site.
Symbols put on the unit
| : Indicates an action that must be avoided.
---|---
| : Indicates that important instructions must be followed.
| : Indicates a part which must be grounded.
| : Indicates that caution should be taken with rotating parts.
| : Indicates that the main switch must be turned off before servicing.
| : Beware of electric shock.
| : Beware of hot surface.
Warning:
Carefully read the labels affixed to the main unit.
Warning:
-
Do not install it by yourself (customer).
Incomplete installation could cause injury due to fire, electric shock, the unit falling or leakage of water. Consult the dealer from whom you purchased the unit or special installer. -
Never remodel the unit or transfer it to another site by yourself. If remodel is performed improperly, water leakage, electric shock or fire may result. If you need to have the unit remodeled or moved, consult your dealer.
-
Install the unit securely in a place which can bear the weight of the unit.
When installed in an insufficient strong place, the unit could fall causing injured. -
Use the specified wires to connect the indoor and outdoor units securely and attach the wires firmly to the terminal board connecting sections so the stress of the wires is not applied to the sections.
Incomplete connecting and fixing could cause fire. -
Do not use intermediate connection of the power cord or the extension cord and do not connect many devices to one AC outlet.
It could cause a fire or an electric shock due to defective contact, defective insulation, exceeding the permissible current, etc. -
Check that the refrigerant gas does not leak after installation has completed.
-
Perform the installation securely referring to the installation manual.
Incomplete installation could cause a personal injury due to fire, electric shock, the unit falling or leakage of water. -
Perform electrical work according to the installation manual and be sure to use an exclusive circuit.
If the capacity of the power circuit is insufficient or there is incomplete electrical work, it could result in a fire or an electric shock. -
Attach the electrical part cover to the indoor unit and the service panel to the outdoor unit securely.
If the electrical part cover in the indoor unit and/or the service panel in the outdoor unit are not attached securely, it could result in a fire or an electric shock due to dust, water, etc. -
Be sure to use the part provided or specified parts for the installation work.
The use of defective parts could cause an injury or leakage of water due to a fire, an electric shock, the unit falling, etc. -
Ventilate the room if refrigerant leaks during operation.
If the refrigerant comes in contact with a flame, poisonous gases will be released.
Caution:
-
Do not use the unit in an unusual environment. If the air conditioner is installed in areas exposed to steam, volatile oil (including machine oil), or sulfuric gas, areas exposed to high salt content such as the seaside, the performance can be significantly reduced and the internal parts can be damaged.
-
Do not install the unit where combustible gases may leak, be produced, flow, or accumulate. If combustible gas accumulates around the unit, fire or explosion may result.
-
Do not keep food, plants, caged pets, artwork, or precision instruments in the direct airflow of the indoor unit or too close to the unit, as these items can be damaged by temperature changes or dripping water.
-
When the room humidity exceeds 80% or when the drainpipe is clogged, water may drip from the indoor unit. Do not install the indoor unit where such dripping can cause damage.
-
When installing the unit in a hospital or communications office, be prepared for noise and electronic interference. Inverters, home appliances, highfrequency medical equipment, and radio communications equipment can cause the air conditioner to malfunction or breakdown. The air conditioner may also affect medical equipment, disturbing medical care, and communications equipment, harming the screen display quality.
-
Perform grounding. Do not connect the ground wire to a gas pipe, water pipe arrester or telephone ground wire. Defective grounding could cause an electric shock.
-
Do not install the unit in a place where an inflammable gas leaks. If gas leaks and accumulates in the area surrounding the unit, it could cause an explosion.
-
Take measures to prevent electrical leakage as required.
-
Perform the drainage/piping work securely according to the installation manual.
If there is a defect in the drainage/piping work, water could drop from the unit and household goods could be wet and damaged. -
Fasten a flare nut with a torque wrench as specified in this manual.
When fastened too tight, a flare nut may broken after a long period and cause a leakage of refrigerant.
Selecting the installation location
2.1. Indoor unit
- Where airflow is not blocked.
- Where cool air spreads over the entire room.
- Where it is not exposed to direct sunshine.
- At a distance 1 m [3-1/4 ft] or more away from your TV and radio (to prevent picture from being distorted or noise from being generated).
- In a place as far away as possible from fluorescent and incandescent lights (so the infrared remote control can operate the air conditioner normally).
- Where the air filter can be removed and replaced easily.
Warning:
Mount the indoor unit into a ceiling strong enough to withstand the weight of
the unit.
2.2. Outdoor unit
Refer to the outdoor unit installation manual.
Selecting an installation site & Accessories
- Select a site with sturdy fixed surface sufficiently durable against the weight of unit.
- Before installing unit, the routing to carry in unit to the installation site should be determined.
- Select a site where the unit is not affected by entering air.
- Select a site where the flow of supply and return air is not blocked.
- Select a site where refrigerant piping can easily be led to the outside.
- Select a site which allows the supply air to be distributed fully in room.
- Do not install unit at a site with oil splashing or steam in much quantity.
- Do not install unit at a site where combustible gas may generate, flow in, stagnate or leak.
- Do not install unit at a site where equipment generating high frequency waves (a high frequency wave welder for example) is provided.
- Do not install unit at a site where fire detector is located at the supply air side. (Fire detector may operate erroneously due to the heated air supplied during heating operation.)
- Avoid places where acidic solutions are frequently handled.
- Avoid places where sulphur-based or other sprays are frequently used.
- When special chemical product may scatter around such as site chemical plants and hospitals, full investigation is required before installing unit. (The plastic components may be damaged depending on the chemical product applied.)
- If the unit is run for long hours when the air above the ceiling is at high temperature/ high humidity (dew point above 26 °C [79 °F]), dew condensation may be produced in the indoor unit. When operating the units in this condition, add insulation material (10-20 mm [13/32 to 13/16 in]) to the entire surface of the indoor unit to avoid dew condensation.
3.1. Install the indoor unit on a ceiling strong enough to sustain its weight
Warning:
The unit must be securely installed on a structure that can sustain its
weight. If the unit is mounted on an unstable structure, it may fall down
causing injuries.
3.2. Securing installation and service space
Secure enough access space to allow for the maintenance, inspection, and
replacement of the motor, fan, drain pump, heat exchanger, and electric box in
one of the following ways.
Select an installation site for the indoor unit so that its maintenance access
space will not be obstructed by beams or other objects.
-
When a space of 300 mm [11-13/16 in] or more is available below the unit between the unit and the ceiling (Fig. 3-2-1)
• Create access door 1 and 2 (450 × 450 mm [17-3/4 × 17-3/4 in] each) as shown in Fig. 3-2-2. (Access door 2 is not required if enough space is available below the unit for a maintenance worker to work in.) -
When a space of less than 300 mm [11-13/16 in] is available below the unit between the unit and the ceiling (At least 20 mm [13/16 in] of space should be left below the unit as shown in Fig. 3-2-3.) • Create access door 1 diagonally below the electric box and access door 3 below the unit as shown in Fig. 3-2-4.
or
• Create access door 4 below the electric box and the unit as shown in Fig. 3-2-5.
[Fig. 3-2-1] (P.2)
[Fig. 3-2-2] (Viewed from the direction of the arrow A) (P.2)
[Fig. 3-2-3] (P.2)
[Fig. 3-2-4] (Viewed from the direction of the arrow B) (P.2)
[Fig. 3-2-5] (Viewed from the direction of the arrow B) (P.2)
A Electric box
B Ceiling
C Ceiling beam
D Access door 2 (450 mm × 450 mm [17-3/4 in × 17-3/4 in])
E Access door 1 (450 mm × 450 mm [17-3/4 in × 17-3/4 in])
F Maintenance access space
G Supply air
H Intake air
I Bottom of indoor unit
J Access door 3
K Access door 4
3.3. Indoor unit accessories
The unit is provided with the following accessories:
| No. | Name | Quantity |
|---|---|---|
| (1) | Pipe cover (for refrigerant piping joint) Small diameter | 1 |
| (2) | Pipe cover (for refrigerant piping joint) Large diameter | 1 |
| (3) | Bands for temporary tightening of pipe cover and drain hose | 8 |
| (4; | Washer (square) | 8 |
| (5) | Drain hose | 2 |
| (6; | Washer (round) | 2 |
| (7) | Installation manual | 1 |
| (8; | Operation manual | 1 |
Fixing hanging bolts
4.1. Fixing hanging bolts
[Fig. 4-1-1] (P.3)
A Center of gravity
(Give site of suspension strong structure.)
Hanging structure
- Ceiling: The ceiling structure varies from building to one another. For detailed information, consult your construction company.
- If necessary, reinforce the hanging bolts with anti-quake supporting members as countermeasures against earthquakes.
- Use M10 for hanging bolts and anti-quake supporting members (field supply).
1 Reinforcing the ceiling with additional members (edge beam, etc.) must be required to keep the ceiling at level and to prevent the ceiling from vibrations.
2 Cut and remove the ceiling members.
3 Reinforce the ceiling members, and add other members for fixing the ceiling boards.
Center of gravity and Product Weight
Model name| W mm [in]| L mm [in]| X mm [in]| Y mm [in]| Z mm [in]| Product
Weight kg [lb]
---|---|---|---|---|---|---
TPEADA0091AA80A| 643 [25-5/16]| 954 [37-9/16]| 340 [13-3/8]| 375 [14-3/4]| 130
[5-1/8]| 26 [58]
TPEADA0121AA80A| 643 [25-5/16]| 954 [37-9/16]| 340 [13-3/8]| 375 [14-3/4]| 130
[5-1/8]| 26 [58]
TPEADA0151AA80A| 643 [25-5/16]| 954 [37-9/16]| 340 [13-3/8]| 375 [14-3/4]| 130
[5-1/8]| 27 [60]
TPEADA0181AA80A| 643 [25-5/16]| 954 [37-9/16]| 340 [13-3/8]| 375 [14-3/4]| 130
[5-1/8]| 27 [60]
TPEADA0241AA80A| 643 [25-5/16]| 1154 [45-7/16]| 325 [12-13/16]| 525
[20-11/16]| 130 [5-1/8]| 30 [67]
TPEADA0301AA80A| 643 [25-5/16]| 1154 [45-7/16]| 325 [12-13/16]| 525
[20-11/16]| 130 [5-1/8]| 30 [67]
TPEADA0361AA80A| 643 [25-5/16]| 1454 [57-1/4]| 330 [13]| 675 [26-9/16]| 130
[5-1/8]| 38 [84]
Installing the unit
5.1. Hanging the unit body
- Bring the indoor unit to an installation site as it is packed.
- To hang the indoor unit, use a lifting machine to lift and pass through the hanging bolts.
[Fig. 5-1-1] (P.3)
A Unit body
B Lifting machine
[Fig. 5-1-2] (P.3)
C Nuts (field supply)
D Washers (accessory)
E M10 hanging bolt (field supply)
5.2. Confirming the unit’s position and fixing hanging bolts
- Ensure that the hanging bolt nuts are tightened to fix the hanging bolts.
- To ensure that drain is discharged, be sure to hang the unit at level using a level.
Caution:
Install the unit in horizontal position. If the side with drain port is
installed higher, water leakage may be caused.
Refrigerant piping work
6.1. Refrigerant pipe
[Fig. 6-1-1] (P.3)
a Indoor unit
b Outdoor unit
Refer to the Instruction Manual that came with the outdoor unit for the
restrictions on the height difference between units and for the amount of
additional refrigerant charge.
Avoid the following places for installation where air conditioner trouble is liable to occur.
- Where there is too much oil such as for machine or cooking.
- Salty environment as seaside areas.
- Hot-spring areas.
- Where sulfide gas exists.
- Other special atmospheric areas.
- This unit has flared connections on both indoor and outdoor sides. [Fig. 6-1-1]
- Refrigerant pipes are used to connect the indoor and outdoor units as shown in [Fig. 6-1-1].
- Insulate both refrigerant and drainage piping completely to prevent condensation.
Piping preparation
- Refrigerant pipes of 3, 5, 7, 10 and 15 m [9-13/16, 16-3/8, 22-15/16, 32-1/4 and 49-3/16 ft] are available as optional items.
(1)Table below shows the specifications of pipes commercially available.
Model
|
Pipe
| Outside diameter| Min wall thickness| Insulation thickness| Insulation
material
---|---|---|---|---|---
mm| inch| mm| inch| mm| inch
TPEADA 0091AA80A| For liquid| 6.35| 1/4| 0.8| 1/32| 8| 5/16|
Heat resisting foam plastic
0.045 specific gravity
For gas| 9.52| 3/8| 0.8| 1/32| 8| 5/16
TPEADA 0121AA80A| For liquid| 6.35| 1/4| 0.8| 1/32| 8| 5/16
For gas| 12.7| 1/2| 0.8| 1/32| 8| 5/16
TPEADA 0151AA80A| For liquid| 6.35| 1/4| 0.8| 1/32| 8| 5/16
For gas| 12.7| 1/2| 0.8| 1/32| 8| 5/16
TPEADA 0181AA80A| For liquid| 6.35| 1/4| 0.8| 1/32| 8| 5/16
For gas| 12.7| 1/2| 0.8| 1/32| 8| 5/16
TPEADA 0241AA80A| For liquid| 9.52| 3/8| 0.8| 1/32| 8| 5/16
For gas| 15.88| 5/8| 1.0| 1/32| 8| 5/16
TPEADA 0301AA80A| For liquid| 9.52| 3/8| 0.8| 1/32| 8| 5/16
For gas| 15.88| 5/8| 1.0| 1/32| 8| 5/16
TPEADA 0361AA80A| For liquid| 9.52| 3/8| 0.8| 1/32| 8| 5/16
For gas| 15.88| 5/8| 1.0| 1/32| 8| 5/16
(2)Ensure that the 2 refrigerant pipes are well insulated to prevent
condensation.
(3)Refrigerant pipe bending radius must be 10 cm [3-15/16 in] or more.
Caution:
Using careful insulation of specified thickness. Excessive thickness prevents
storage behind the indoor unit and smaller thickness causes dew drippage.
Refrigerant piping work
6.2. Flaring work
- Main cause of gas leakage is defect in flaring work.
Carry out correct flaring work in the following procedure.
6.2.1. Pipe cutting
[Fig. 6-2-1] (P.3)
a Copper tubes
b Good
c No good
d Tilted
e Uneven
f Burred
- Using a pipe cutter cut the copper tube correctly.
6.2.2. Burrs removal
[Fig. 6-2-2] (P.3)
a Burr
b Copper tube/pipe
c Spare reamer
d Pipe cutter
- Completely remove all burrs from the cut cross section of pipe/tube.
- Put the end of the copper tube/pipe to downward direction as you remove burrs in order to avoid burrs drop in the tubing.
6.2.3. Putting nut on
[Fig. 6-2-3] (P.3)
a Flare nut
b Copper tube
- Remove flare nuts attached to indoor and outdoor unit, then put them on pipe/tube having completed burr removal.
(not possible to put them on after flaring work)
6.2.4. Flaring work
[Fig. 6-2-4] (P.3)
a Flaring tool
b Die
c Copper tube
d Flare nut
e Yoke
- Carry out flaring work using flaring tool as shown below.
Pipe diameter (mm [in])
| Dimension
---|---
A (mm [in])|
B +0 (mm [in]) -0.4 [-1/32]
When the tool for R410A is used
Clutch type
6.35 [1/4]| 0 to 0.5 [0 to 1/32]| 9.1 [3/8]
9.52 [3/8]| 0 to 0.5 [0 to 1/32]| 13.2 [17/32]
12.7 [1/2]| 0 to 0.5 [0 to 1/32]| 16.6 [21/32]
15.88 [5/8]| 0 to 0.5 [0 to 1/32]| 19.7 [25/32]
Firmly hold copper tube in a die in the dimension shown in the table at above.
6.2.5. Check
[Fig. 6-2-5] (P.3)
a Smooth all around
b Inside is shining without any scratches
c Even length all around
d Too much
e Tilted
f Scratch on flared plane
g Cracked
h Uneven
i Bad examples
- Compare the flared work with a figure in right side hand.
- If flare is noted to be defective, cut off the flared section and do flaring work again.
6.3. Pipe connection
[Fig. 6-3-1] (P.4)
- Apply a thin coat of refrigeration oil on the seat surface of pipe.
- For connection first align the center, then tighten the first 3 to 4 turns of flare nut.
- Use tightening torque table below as a guideline for indoor unit side union joint section, and tighten using two wrenches. Excessive tightening damages the flare section.
| Copper pipe O.D. (mm [in]) | Flare nut O.D. (mm [in]) | Tightening torque (N·m) |
|---|---|---|
| ø6.35 [1/4] | 17 [11/16] | 14 – 18 |
| ø9.52 [3/8] | 22 [7/8] | 34 – 42 |
| ø12.7 [1/2] | 26 [1-1/32] | 49 – 61 |
| ø15.88 [5/8] | 29 [1-5/32] | 68 – 82 |
Warning:
Be careful of flying flare nut! (Internally pressurized)
Remove the flare nut as follows:
- Loosen the nut until you hear a hissing noise.
- Do not remove the nut until the gas has been completely released (i.e., hissing noise stops).
- Check that the gas has been completely released, and then remove the nut.
Outdoor unit connection
Connect pipes to stop valve pipe joint of the outdoor unit in the same manner applied for indoor unit.
- For tightening use a torque wrench or spanner, and use the same tightening torque applied for indoor unit.
Refrigerant pipe insulation
- After connecting refrigerant piping, insulate the joints (flared joints) with thermal insulation tubing as shown below.
[Fig. 6-3-2] (P.4)
A Pipe cover (small) (accessory)
B Caution:
Pull out the thermal insulation on the refrigerant piping at the site, insert
the flare nut to flare the end, and replace the insulation in its original
position.
Take care to ensure that condensation does not form on exposed copper piping.
C Liquid end of refrigerant piping
D Gas end of refrigerant piping
E Site refrigerant piping
F Main body
G Pipe cover (large) (accessory)
H Thermal insulation (field supply)
I Pull
J Flare nut
K Return to original position
L Ensure that there is no gap here
M Plate on main body
N Band (accessory)
O Ensure that there is no gap here. Place join upwards.
- Remove and discard the rubber bung which is inserted in the end of the unit piping.
- Flare the end of the site refrigerant piping.
- Pull out the thermal insulation on the site refrigerant piping and replace the insulation in its original position.
Cautions On Refrigerant Piping
- Be sure to use non-oxidative brazing for brazing to ensure that no foreign matter or moisture enter into the pipe.
- Be sure to apply refrigerating machine oil over the flare connection seating surface and tighten the connection using a double spanner.
- Provide a metal brace to support the refrigerant pipe so that no load is imparted to the indoor unit end pipe. This metal brace should be provided 50 cm [19-11/16 in] away from the indoor unit’s flare connection.
6.4. Purging procedures leak test
6.5. Drain piping work
- Ensure that the drain piping is downward (pitch of more than 1/100) to the outdoor (discharge) side. Do not provide any trap or irregularity on the way.
- Ensure that any cross-wise drain piping is less than 20 m [65 ft] (excluding the difference of elevation). If the drain piping is long, provide metal braces to prevent it from waving. Never provide any air vent pipe. Otherwise drain may be ejected.
- Use a hard vinyl chloride pipe VP-25 (with an external diameter of 32 mm [1-1/4 in]) for drain piping.
- Ensure that collected pipes are 10 cm [3-15/16 in] lower than the unit body’s drain port.
- Do not provide any odor trap at the drain discharge port.
- Put the end of the drain piping in a position where no odor is generated.
- Do not put the end of the drain piping in any drain where ionic gases are generated.
[Fig. 6-5-1] (P.4)
○ Correct piping
x Wrong piping
A Insulation (9 mm [3/8 in] or more)
B Downward slope (1/100 or more)
C Support metal
K Air bleeder
L Raised
M Odor trap
Grouped piping
D O. D. ø32 mm [1-1/4 in] PVC TUBE
E Make it as large as possible. About 10 cm [3-15/16 in].
F Indoor unit
G Make the piping size large for grouped piping.
H Downward slope (1/100 or more)
I O. D. ø38 mm [1-1/2 in] PVC TUBE for grouped piping. (9 mm [3/8 in] or more
insulation)
J Up to 700 mm [27-9/16 in] N Drain hose (accessory)
O Horizontal or slightly upgradient
-
Insert the drain hose (accessory) into the drain port (insertion margin: 25mm [1 in]).
(The drain hose must not be bent more than 45° to prevent the hose from breaking or clogging.)
(Attach the hose with glue, and fix it with the band (small, accessory).) -
Attach the drain pipe (O.D. ø32 mm [1-1/4 in] PVC TUBE PV-25, field supply).
(Attach the pipe with glue, and fix it with the band (small, accessory).) -
Perform insulation work on the drain pipe (O.D. ø32 mm [1-1/4 in] PVC TUBE PV25) and on the socket (including elbow).
-
Check the drainage. (Refer to [Fig. 6-6-1])
-
Attach the insulating material (accessory), and fix it with the band (large, accessory) to insulate the drain port.
[Fig. 6-5-2] (P.4)
A Indoor unit
B Tie band (accessory)
C Visible part
D Insertion margin
E Drain hose (accessory)
F Drain pipe (O.D. ø32 mm [1-1/4 in] PVC TUBE, field supply)
G Insulating material (field supply)
H Tie band (accessory)
I To be gap free. The joint section of the insulation material meet must be at
the top.
6.6. Confirming drain discharge
- Make sure that the drain-up mechanism operates normally for discharge and that there is no water leakage from the connections.
- Be sure to confirm the above before ceiling work is done in the case of a new construction.
1. Remove the water supply port cover on the same side as the indoor unit piping.
2. Fill water into the feed water pump using a feed water tank. In filling, be sure to put the end of the pump or tank in a drain pan. (If the insertion is incomplete, water may flow over the machine.)
3. Perform the test run in cooling mode, or connect the connector to the ON side of SWE on the Indoor controller board. (The drain pump and the fan are forced to operate without any remote controller operation.) Make sure using a transparent hose that drain is discharged.
4. After confirmation, cancel the test run mode, and turn off the main power. If the connector is connected to the ON side of SWE, disconnect it and connect it to the OFF side, and attach the water supply port cover into its original position. (Tighten the screws of the water supply port cover to the torque of 2.0 ±0.2 N·m.)
[Fig. 6-6-1] (P.5)
A Insert pump’s end 2 to 4 cm [13/16 to 1-5/8 in].
B Remove the water supply port.
C About 2500 cc
D Water
E Filling port
F Screw
Duct work
-
Connect canvas duct between unit and duct. [Fig. 7-0-1] (P.5)
-
Use incombustible material for duct parts.
-
Provide full insulation to inlet duct flange and outlet duct to prevent condensation.
-
Be sure to change the position of air filter to a position where it can be serviced.
In case of rear inlet
In case of bottom inlet
A Duct
B Air inlet
C Access door
D Canvas duct
E Ceiling surface
F Air outlet
G Leave distance enough to prevent short cycle -
Procedure for changing the rear inlet to the bottom inlet. [Fig. 7-0-2] (P.5)
A Filter
B Bottom plate
-
Remove air filter. (First remove filter lock screw.)
-
Remove the bottom plate.
-
Fit the bottom plate to the rear of the body. [Fig. 7-0-3] (P.5) (Position of lug-holes on the plate is different from those for rear inlet.)
(Tighten the screws of the bottom plate to the torque of 1.4 ±0.2 N·m.)
-
Fit filter to the underside of the body.
(Be careful of which side of the filter to fit.) [Fig. 7-0-4] (P.5)
C Nail for the bottom inlet
D Nail for the rear inlet
Caution:
-
Inlet duct of 850 mm [33-1/2 in] or more should be construted.
To connect the air conditioner main body and the duct for potential equalization. -
To reduce the risk of injury from metal sheet edges, wear protective gloves.
-
To connect the air conditioner main body and the duct for potential equalization.
-
The noise from the intake will increase dramatically if intake is fitted directly beneath the main body. Intake should therefore be installed as far away from the main body as possible.
Particular care is required when using it with bottom inlet specifications. -
Install sufficient thermal insulation to prevent condensation forming on outlet duct flanges and outlet ducts.
-
Keep the distance between the inlet grille and the fan over 850 mm [33-1/2 in].
If it is less than 850 mm [33-1/2 in], install a safety guard not to touch the fan. -
To avoid electrical noise interference, do not run transmission lines at the bottom of the unit.
Electrical work
8.1. Power supply
8.1.1. Indoor unit power supplied from outdoor unit
The following connection patterns are available.
The outdoor unit power supply patterns vary on models.
1:1 System
[Fig. 8-1-1] (P.6)
A Outdoor unit power supply
B Isolating switch
C Outdoor unit
D Indoor unit/outdoor unit connecting cords
E Wired remote controller
F Indoor unit
G Indoor controller board
H Radio frequency interface for RF thermostat
- Affix a label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.
Field electrical wiring
| Indoor unit model | TPEAD |
|---|
Wiring Wire No.
× size (mm2)
| Indoor unit power supply (Heater)| –
Indoor unit power supply (Heater) earth| –
Indoor unit-Outdoor unit| 3 × 1.5 (polar)
Indoor unit-Outdoor unit earth| 1 × Min. 1.5
Wired remote controller-Indoor unit| 1| 2 × 0.3 (Non-polar)
Circuit rating| Indoor unit (Heater) L-N| 2| –
Indoor unit-Outdoor unit S1-S2| 2| 230 V AC
Indoor unit-Outdoor unit S2-S3| 2| 24 V DC
Wired remote controller-Indoor unit| *2| 14 V DC
1. The 10 m [32 ft] wire is attached in the wired remote controller accessory. Max. 500 m [1640 ft] 2. The figures are NOT always against the ground.
S3 terminal has 24 V DC against S2 terminal. However between S3 and S1, these
terminals are not electrically insulataed by the transformer or other device.
Notes:
- Wiring size must comply with the applicable local and national code.
- Power supply cords and indoor unit/outdoor unit connecting cords shall not be lighter than polychloroprene sheathed flexible cord. (Design 245 IEC57)
- Install an earth longer than other cables.
- Perform wiring in compliance with the safety regulations detailed in UL1995.
Caution:
Do not use anything other than the correct capacity fuse. Using fuse, wire or
copper wire with too large capacity may cause a risk of malfunction or fire.
Caution :
Take measures to prevent electrical leakage as required.
8.2. Indoor wire connection
Work procedure
-
Remove 2 screws to detach the electric component cover.
-
Route each cable through the wiring intake into the electric component box.
(Procure power cable and in-out connecting cable locally and use wired remote control cable supplied with the unit.) -
Securely connect the power cable and the in-out connecting cable and the wired remote control cable to the terminal blocks.
-
For radio frequency interface
Connect the electric wires securely to the CN105 (RED) of indoor controller board.
Connect the electric wires securely to the corresponding terminals. -
Secure the cables with clamps inside the electric component box.
-
Attach the electric component cover as it was.
(Tighten the screws of the terminal box cover to the torque of 2.0 ±0.2 N·m.)
• Fix power supply cable and indoor/outdoor cable to control box by using buffer bushing for tensile force. (PG connection or the like.)
Warning:
- Attach the electrical part cover securely. If it is attached incorrectly, it could result in a fire, electric shock due to dust, water, etc.
- Use the specified indoor/outdoor unit connecting wire to connect the indoor and outdoor units and fix the wire to the terminal block securely so that no stress is applied to the connecting section of the terminal block. Incomplete connection or fixing of the wire could result in a fire.
[Fig. 8-2-1] (P.6)
A Screw holding cover (1pc)
B Cover
[Fig. 8-2-2] (P.6)
C Terminal box
D Knockout hole
E Remove
[Fig. 8-2-3] (P.6)
F Use PG bushing to keep the weight of the cable and external force from being
applied to the power supply terminal connector. Use a cable tie to secure the
cable.
G Power source wiring
H Use ordinary bushing
I Transmission wiring
J Conduit
K Side frame
L Knockout hole (for power source wiring)
M Washer (accessory)
[Fig. 8-2-4] (P.6)
N Terminal block for power source and indoor transmission
O Terminal block for wired remote controller
P Indoor controller board
Q Radio frequency interface is installed on Indoor controller board
R CN105 (RED/5P)
S Wiring for radio frequency interface
-
Perform wiring as shown in [Fig. 8-2-4]. (Procure the cable locally.)
Make sure to use cables of the correct polarity only.
[Fig. 8-2-5] (P.6)
A Indoor terminal block
B Earth wire (green/yellow)
C Indoor/outdoor unit connecting wire 3-core 1.5 mm2
[AWG 16] or more
D Outdoor terminal block
1 Connecting cable
Cable 3-core 1.5 mm2
[AWG 16], in conformity with Design 245 IEC 57.
2 Indoor terminal block
3 Outdoor terminal block
4 Always install an earth wire (1-core 1.5 mm2
[AWG 16]) longer than other cables
5 Wired remote controller cable
Wire No x size (mm2 ) : Cable 2C x 0.3
This wire accessory of remote controller
(wire length : 10 m [32 ft], non-polar. Max. 500 m [1640 ft])
6 Wired remote controller -
Connect the terminal blocks as shown in [Fig. 8-2-5].
Caution:
- Use care not to make mis-wiring.
- Firmly tighten the terminal screws to prevent them from loosening.
- After tightening, pull the wires lightly to confirm that they do not move.
8.3. Remote controller
8.3.1. For wired remote controller
- Two wired remote controllers setting
If two wired remote controllers are connected, set one to “Main” and the other to “Sub”.
For setting procedures, refer to “Function selection of remote controller” in the operation manual for the indoor unit.
8.3.2. For IR wireless remote controller
- Installation area
• Area in which the IR wireless remote controller is not exposed to direct sunshine.
• Area in which there is no near by heating source.
• Area in which the IR wireless remote controller is not exposed to cold (or hot) winds.
• Area in which the IR wireless remote controller can be operated easily.
• Area in which the IR wireless remote controller is beyond the reach of children.
- The signal can travel up to approximately 7 meters [23 ft] (in a straight line) within 45 degrees to both right and left of the center line of the receiver.
2. Setting the Model No.
[Fig. 8-3-1] (P.7)
1 Insert batteries.
2 Press the SET button with something sharp at the end.
Start this operation from the status of IR wireless remote controller display turned off.
blinks and Model No. (A) is lighted.
3 Press the temp button to set the Model No. (A).
4 Press the SET button with something sharp at the end.
and Model No. (A) are lighted for three seconds, then turned off. MODEL SELECTIndoor Unit Model| Model No. (A)
---|---
TPEAD| 026
8.4. Function settings
8.4.1. Function setting on the unit (Selecting the unit functions)
- For wired remote controller [Fig. 8-4-1] (P.7)
1. Changing the external static pressure setting.
- Be sure to change the external static pressure setting depending on the duct and the grill used.
-
Select “Service” from the Main menu, and press the [SELECT/HOLD] button.
Select “Settings” from the Service menu, and press the [SELECT/HOLD] button.
Select “Function setting” from the Settings menu, and press the [SELECT/HOLD] button.
Select “Function settings” with the [F1] or [F2] button, and press the [SELECT/HOLD] button. -
Set the indoor unit refrigerant addresses and unit numbers with the [F1] through [F4] buttons, and then press the [SELECT/HOLD] button to confirm the current setting.
< Checking the Indoor unit No.>
When the [SELECT/HOLD] button is pressed, the target indoor unit will start fan operation. If the unit is common or when running all units, all indoor units for the selected refrigerant address will start fan operation. -
When data collection from the indoor units is completed, the current settings appear highlighted. Non-highlighted items indicate that no function settings are made. Screen appearance varies depending on the “Unit No.” setting.
-
Use the [F1] or [F2] button to move the cursor to select the mode number, and change the setting number with the [F3] or [F4] button to switch the setting number in response to the external static pressure to be used.
External static pressure| Setting no. of mode no. 08| Setting no. of mode no. 10
---|---|---
35 Pa [0.14 in. WG]| 2| 1
50 Pa [0.20 in. WG] (before shipment)| 3| 1
70 Pa [0.28 in. WG]| 1| 2
100 Pa [0.40 in. WG]| 2| 2
150 Pa [0.60 in. WG]| 3| 2 -
When the settings are completed, press the [SELECT/HOLD] button to send the setting data from the remote controller to the indoor units.
When the transmission is successfully completed, the screen will return to the Function setting screen.
2. Other functions
- Select unit number 00 for the settings. (Settings for all indoor units) Refer to Function table 1.
- Select unit number 01 to 04 or AL for the settings. (Settings for each indoor unit)
To set the indoor unit in the individual system, select unit number 01.
To set each indoor unit of two, three or four indoor units, which are connected when these units are simultaneously in operation, select unit number 01 to 04.
To set all indoor units of two, three or four indoor units which are connected when these units are simultaneously in operation, select AL.
Refer to Function table 2.
2) For IR wireless remote controller
[Fig. 8-4-2] (P.7)
A Hour button
B Minute button
C TEMP button
D TEMP button
E ON/OFF button
F CHECK button
-
Changing the external static pressure setting.
• Be sure to change the external static pressure setting depending on the duct and the grill used.
1 Go to the function select mode
Press the CHECK button F twice continuously.
(Start this operation from the status of remote controller display turned off.) CHECK is lighted and “00” blinks.
Press the TEMP button C once to set “50”. Direct the wireless remote controller toward the receiver of the indoor unit and press the Hour button A. -
Setting the unit number
Press the TEMP buttons C and D to set the unit number to 01-04 or AL. Direct the wireless remote controller toward the receiver of the indoor unit and press the Minute button B. -
Selecting a mode
Enter 08 to change the external static pressure setting using the C and D buttons.
Direct the wireless remote controller toward the receiver of the indoor unit and press the Hour button A.
Current setting number:
1 = 1 beep (one second)
2 = 2 beeps (one second each)
3 = 3 beeps (one second each) -
Selecting the setting number
Use the C and D buttons to change the external static pressure setting to be used.
Direct the wireless remote controller toward the sensor of the indoor unit and press the Hour button A. -
To set the external static pressure
Repeat steps 3 and 4 to set the mode number to 10. -
Complete function selection
Direct the wireless remote controller toward the sensor of the indoor unit and press the ON/OFF button E.
Note:
- Whenever changes are made to the function settings after installation or maintenance, be sure to record the changes with a mark in the “Check” column of the Function table.
3) Changing the power voltage setting (Function table 1)
- Be sure to change the power voltage setting depending on the voltage used.
Function table 1
Select unit number 00
| Mode | Settings | Mode no. | Setting no. | Initial setting | Check |
|---|---|---|---|---|---|
| Power failure automatic recovery 12 (AUTO RESTART FUNCTION) | Not available | ||||
| 01 | 1 |
○
|
Available| 2| |
Indoor temperature detecting
| Indoor unit operating average|
02
| 1|
○
|
Set by indoor unit’s remote controller| 2| |
Remote controller’s internal sensor| 3| |
LOSSNAY connectivity
| Not Supported|
03
| 1|
○
|
Supported (indoor unit is not equipped with outdoor-air intake)| 2| |
Supported (indoor unit is equipped with outdoor-air intake)| 3| |
Power voltage| 230V| 04| 1|
○
|
208V| 2| |
Auto mode| Energy saving cycle automatically enabled| 05| 1|
○
|
Energy saving cycle automatically disabled| 2| |
Function table 2
Select unit numbers 01 to 04 or all units (AL [wired remote controller]/07
[wireless remote controller])
| Mode | Settings | Mode no. | Setting no. | Initial setting | Check |
|---|
Filter sign
| 100 Hr|
07
| 1| |
2500 Hr| 2| |
No filter sign indicator| 3|
○
|
External static pressure
| External static pressure| Setting no. of mode no. 08| Setting no. of mode no. 10|
08
| 1| |
2| |
35 Pa [0.14 in. WG]| 2| 1| 3|
○
|
50 Pa [0.20 in. WG] (before shipment)| 3| 1
70 Pa [0.28 in. WG]| 1| 2|
10
| 1|
○
|
100 Pa [0.40 in. WG]| 2| 2| 2| |
150 Pa [0.60 in. WG]| 3| 2| 3| |
1 When the power supply returns, the air conditioner will start 3 minutes or 1 minute later (hinge on Outdoor unit).
2 Power failure automatic recovery initial setting depends on the connecting outdoor unit.
Note: When the function of an indoor unit were changed by function
selection after the end of installation, always indicate the contents by
entering a ○ or other mark in the appropriate check filed of the tables.
Test run
9.1. Before test run
- After completing installation and the wiring and piping of the indoor and outdoor units, check for refrigerant leakage, looseness in the power supply or control wiring, wrong polarity, and no disconnection of one phase in the supply.
- Use a 500-volt megohmmeter to check that the resistance between the power supply terminals and ground is at least 1.0 MΩ.
- Do not carry out this test on the control wiring (low voltage circuit) terminals.
Warning:
Do not use the air conditioner if the insulation resistance is less than 1.0
MΩ.
Insulation resistance
After installation or after the power source to the unit has been cut for an
extended period, the insulation resistance will drop below 1 MΩ due to
refrigerant accumulatingin the compressor. This is not a malfunction. Perform
the following procedures.
-
Remove the wires from the compressor and measure the insulation resistance of the compressor.
-
If the insulation resistance is below 1 MΩ, the compressor is faulty or the resistance dropped due to the accumulation of refrigerant in the compressor.
-
After connecting the wires to the compressor, the compressor will start to warm up after power is supplied. After supplying power for the times indicated below, measure the insulation resistance again.
• The insulation resistance drops due to accumulation of refrigerant in the compressor. The resistance will rise above 1 MΩ after the compressor is warmed up for two to three hours.
(The time necessary to warm up the compressor varies according to atmospheric conditions and refrigerant accumulation.)
• To operate the compressor with refrigerant accumulated in the compressor, the compressor must be warmed up at least 12 hours to prevent breakdown. -
If the insulation resistance rises above 1 MΩ, the compressor is not faulty.
Caution:
- The compressor will not operate unless the power supply phase connection is correct.
- Turn on the power at least 12 hours before starting operation.
– Starting operation immediately after turning on the main power switch can result in severe damage to internal parts. Keep the power switch turned on during the operational season.
9.2. Test run
9.2.1. Using wired remote controller
- Make sure to read operation manual before test run. (Especially items to secure safety)
Step 1 Turn on the power.
- Remote controller: The system will go into startup mode, and the remote controller power lamp (green) and “PLEASE WAIT” will blink. While the lamp and message are blinking, the remote controller cannot be operated. Wait until “PLEASE WAIT” is not displayed before operating the remote controller. After the power is turned on, “PLEASE WAIT” will be displayed for approximately 2 minutes.
- Indoor controller board: LED 1 will be lit up, LED 2 will be lit up (if the address is 0) or off (if the address is not 0), and LED 3 will blink.
- Outdoor controller board: LED 1 (green) and LED 2 (red) will be lit up. (After the startup mode of the system finishes, LED 2 will be turned off.) If the outdoor controller board uses a digital display, [- ] and [ -] will be displayed alternately every second.
If the operations do not function correctly after the procedures in step 2 and thereafter are performed, the following causes should be considered and eliminated if they are found.
(The symptoms below occur during the test run mode. “Startup” in the table means the LED display written above.)
| Symptoms in test run mode | Cause |
|---|---|
| Remote Controller Display | OUTDOOR BOARD LED Display |
Remote controller displays “PLEASE WAIT”, and cannot be operated.| After
“startup” is displayed, only green lights up. <00>| • After power is turned
on, “PLEASE WAIT” is displayed for 2 minutes during system startup. (Normal)
After power is turned on, “PLEASE WAIT” is displayed for 3 minutes, then error
code is displayed.| After “startup” is displayed, green (once) and red (once)
blink alternately.
After “startup” is displayed, green (once) and red (twice) blink alternately.
<F3, F5, F9>| • Outdoor unit’s protection device connector is open.
No display appears even when remote controller operation switch is turned on. (Operation lamp does not light up.)
| After “startup” is displayed, green (twice) and red (once) blink alternately. <EA. Eb>| • Incorrect wiring between the indoor and outdoor unit (Polarity is wrong for S1, S2, S3.)
• Remote controller transmission wire short.
After “startup” is displayed, only green lights up. <00>| • There is no outdoor unit of address 0. (Address is other than 0.)
• Remote controller transmission wire open.
Display appears but soon disappears even when remote controller is operated.| After “startup” is displayed, only green lights up. <00>| • After canceling function selection, operation is not possible for about 30 seconds. (Normal)
Step 2 Switch the remote controller to “Test run”.
- Select “Test run” from the Service menu, and press the [SELECT/HOLD] button. [Fig. 9-2-1] (P.8)
- Select “Test run” from the Test run menu, and press the [SELECT/HOLD] button. [Fig. 9-2-2] (P.8)
- The test run operation starts, and the Test run operation screen is displayed.
Step 3 Perform the test run and check the airflow temperature and auto vane.
- Press the [F1] button to change the operation mode. [Fig. 9-2-3] (P.8)
Cooling mode: Check that cool air blows from the unit.
Heating mode: Check that warm air blows from the unit.
Step 4 Confirm the operation of the outdoor unit fan.
The speed of the outdoor unit fan is controlled in order to control the
performance of the unit. Depending on the ambient air, the fan will rotate at
a slow speed and will keep rotating at that speed unless the performance is
insufficient. Therefore, the outdoor wind may cause the fan to stop rotating
or to rotate in the opposite direction, but this is not a problem.
Step 5 Stop the test run.
1 Press the [ON/OFF] button to stop the test run. (The Test run menu will
appear.)
Note: If an error is displayed on the remote controller, see the table
below.
LCD| Description of malfunction| LCD| Description of
malfunction| LCD| Description of malfunction
---|---|---|---|---|---
P1| Intake sensor error| P9| Pipe sensor error (dual-wall pipe)|
E0 – E5
|
Communication error between the remote controller and the indoor unit
P2| Pipe sensor error (liquid pipe)| PA| Leakage error (refrigerant system)
P4| Drain float switch connector disconnected (CN4F)| PB (Pb)| Indoor unit fan
motor error
PL| Refrigerant circuit abnormal
P5| Drain overflow protection operation| FB| Indoor controller board error|
E6 – EF
|
Communication error between the indoor unit and the outdoor unit
P6| Freezing/overheating protection operation| U, F (* indicates an alphanumeric character excluding FB.)|
Outdoor unit malfunction
Refer to the wiring diagram for the outdoor unit.
P8
|
Pipe temperature error
- See the table below for the details of the LED display (LED 1, 2, and 3) on the indoor controller board.
LED1 (microcomputer power supply)| Indicates whether control power is
supplied. Make sure that this LED is always lit.
---|---
LED2 (remote controller power supply)| Indicates whether power is supplied to
the wired remote controller. The LED is lit only for the indoor unit that is
connected to the outdoor unit that has an address of 0.
LED3 (indoor/outdoor unit communication)| Indicates whether the indoor and
outdoor units are communicating. Make sure that this LED is always blinking.
Note:
If the unit is operated continuously during a test run, the unit stops after 2
hours.
9.3. Self-check
- Refer to the installation manual that comes with each remote controller for details.
- RF thermostat is not established.
- Refer to the following tables for details on the check codes. (Wireless remote controller) [Output pattern A]
[Output pattern A] Errors detected by indoor unitIR wireless remote controller| Wired remote controller
RF thermostat
|
Symptom
|
Remark
---|---|---|---
Beeper sounds/OPERATION INDICATOR lamp flashes
(Number of times)
|
Check code
1| P1| Intake sensor error|
2| P2, P9| Pipe (Liquid or 2-phase pipe) sensor error|
3| E6, E7| Indoor/outdoor unit communication error|
4| P4| Drain sensor error|
5| P5| Drain pump error|
6| P6| Freezing/Overheating safeguard operation|
7| EE| Communication error between indoor and outdoor units|
8| P8| Pipe temperature error|
9| E4| Remote controller signal receiving error|
10| –| –|
11| –| –|
12| Fb| Indoor unit control system error (memory error, etc.)|
No sound| – –| No corresponding|
[Output pattern B] Errors detected by unit other than indoor unit (outdoor
unit, etc.)IR wireless remote controller| Wired remote controller
RF thermostat
|
Symptom
|
Remark
---|---|---|---
Beeper sounds/OPERATION INDICATOR lamp flashes
(Number of times)
|
Check code
1| E9| Indoor/outdoor unit communication error (Transmitting error) (Outdoor unit)|
For details, check the LED display of the outdoor controller board.
2| UP| Compressor overcurrent interruption
3| U3, U4| Open/short of outdoor unit thermistors
4| UF| Compressor overcurrent interruption (When compressor locked)
5| U2| Abnormal high discharging temperature/49C worked/insufficient
refrigerant
6| U1, Ud| Abnormal high pressure (63H worked)/Overheating safeguard operation
7| U5| Abnormal temperature of heat sink
8| U8| Outdoor unit fan protection stop
9| U6| Compressor overcurrent interruption/Abnormal of power module
10| U7| Abnormality of super heat due to low discharge temperature
11| U9, UH| Abnormality such as overvoltage or voltage shortage and abnormal
synchronous signal to main circuit/Current sensor error
12| –| –
13| –| –
14| Others| Other errors (Refer to the technical manual for the outdoor unit.)
1 If the beeper does not sound again after the initial two beeps to confirm the self-check start signal was received and the OPERATION INDICATOR lamp does not come on, there are no error records.
2 If the beeper sounds three times continuously “beep, beep, beep (0.4 + 0.4 + 0.4 sec.)” after the initial two beeps to confirm the self-check start signal was eceived, the specified refrigerant address is incorrect.
-
On IR wireless remote controller
The continuous buzzer sounds from receiving section of indoor unit.
Blink of operation lamp -
On wired remote controller Check code displayed on the LCD.
-
If the unit cannot be operated properly after the above test run has been performed, refer to the following table to remove the cause.
| Symptom | Cause |
|---|---|
| Wired remote controller | LED 1, 2 (PCB in outdoor unit) |
PLEASE WAIT
| For about 2 minutes following power-on| After LED 1, 2 are lighted, LED 2 is
turned off, then only LED 1 is lighted. (Correct operation)| • For about 2
minutes after power-on, operation of the remote controller is not possible due
to system start-up. (Correct operation)
PLEASE WAIT ® Error code| After about 2 minutes has expired following power-
on| Only LED 1 is lighted. ® LED 1, 2 blink.| • Connector for the outdoor
unit’s protection device is not connected.
• Reverse or open phase wiring for the outdoor unit’s power terminal block
(L1, L2, L3)
Display messages do not appear even when operation switch is turned ON
(operation lamp does not light up).| Only LED 1 is lighted. ® LED 1, 2 blinks
twice, LED 2 blinks once.| • Incorrect wiring between indoor and outdoor
units (incorrect polarity of S1, S2, S3)
• Remote controller wire short
On the IR wireless remote controller with conditions above, following phenomena takes place.
- No signals from the remote controller are accepted.
- OPE lamp is blinking.
- The buzzer makes a short ping sound.
Note:
Operation is not possible for about 30 seconds after cancellation of function
selection. (Correct operation)
9.4. AUTO RESTART FUNCTION
Indoor controller board
This model is equipped with the AUTO RESTART FUNCTION.
When the indoor unit is controlled with the remote controller, the operation
mode, set temperature, and the fan speed are memorized by the indoor
controller board. The auto restart function sets to work the moment the power
has restored after power failure, then, the unit will restart automatically.
Set the AUTO RESTART FUNCTION using the remote controller. (Mode no.01)
Easy maintenance function
Maintenance data, such as the indoor/outdoor unit’s heat exchanger temperature and compressor operation current can be displayed with “Smooth maintenance”.
-
This cannot be executed during test operation.
-
Depending on the combination with the outdoor unit, this may not be supported by some models.
-
[Fig. 10-0-1] (P.8)
• Select “Service” from the Main menu, and press the [SELECT/HOLD] button.
• Select “Check” with the [F1] or [F2] button, and press the [SELECT/HOLD] button.
• Select “Smooth maintenance” with the [F1] or [F2] button, and press the [SELECT/HOLD] button. -
[Fig. 10-0-2] (P.8)
Select each item.
• Select the item to be changed with the [F1] or [F2] button.
• Select the required setting with the [F3] or [F4] button.
“Ref. address” setting ………. “0”-“15”
“Stable mode” setting……….. “Cool” / “Heat” / “Normal”
• Press the [SELECT/HOLD] button, fixed operation will start.
-
-
Stable mode will take approx. 20 minutes. 3. [Fig. 10-0-3] (P.8)
The operation data will appear.
The Compressor-Accumulated operating (COMP. run) time is 10-hour unit, and the
Compressor-Number of operation times (COMP. On/Off) is a 100-time unit
(fractions discarded).
Navigating through the screens
- To go back to the Main menu…………[MENU] button
- To return to the previous screen………[RETURN] button
Maintenance
11.1. Gas charge
[Fig. 11-1-1] (P.8)
A Indoor unit
B Union
C Liquid pipe
D Gas pipe
E Stop valve
F Outdoor unit
G Refrigerant gas cylinder operating valve
H Refrigerant gas cylinder for R410A with siphon
I Refrigerant (liquid)
J Electronic scale for refrigerant charging
K Charge hose (for R410A)
L Gauge manifold valve (for R410A)
M Service port
- Connect gas cylinder to the service port of stop valve (3-way).
- Execute air purge of the pipe (or hose) coming from refrigerant gas cylinder.
- Replenish specified amount of refrigerant, while running the air conditioner for cooling.
Note:
In case of adding refrigerant, comply with the quantity specified for the
refrigerating cycle.
Caution:
-
Do not discharge the refrigerant into the atmosphere.
Take care not to discharge refrigerant into the atmosphere during installation, reinstallation, or repairs to the refrigerant circuit. -
For additional charging, charge the refrigerant from liquid phase of the gas cylinder.
If the refrigerant is charged from the gas phase, composition change may occur in the refrigerant inside the cylinder and the outdoor unit. In this case, ability of the refrigerating cycle decreases or normal operation can be impossible. However, charging the liquid refrigerant all at once may cause the compressor to be locked. Thus, charge the refrigerant slowly.
To maintain the high pressure of the gas cylinder, warm the gas cylinder with
warm water (under 40 °C [104 °F]) during cold season. But never use naked fire
or steam.
Please be sure to put the contact address/telephone number on this manual
before handing it to the customer.
MITSUBISHI ELECTRIC TRANE HVAC US LLC
HEAD OFFICE: 1340 SATELLITE BLVD. SUWANEE GA 30024 USA
KJ79P808H01
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