Airwell VVFA-125R-01M22 Air Conditioner Owner’s Manual

Airwell VVFA-125R-01M22 Air Conditioner

Product Information

Flow Logic (MINI) VVFA Series R410A

General Information

The Flow Logic (MINI) VVFA Series R410A is an air conditioning unit suitable for both residential and commercial use. The outdoor models available are VVFA-125R-01M22, VVFA-150R-01M22, and VVFA-150R-01T32. The package includes the outdoor unit and an indoor unit, which could be one of the following types: 4-way cassette type, 2-way cassette type, slim low ESP duct type, round-way smart airflow cassette, one-way cassette type, high ESP duct type, convertible type, N high wall, HRV, or console.

Features

1. New platform and outlook with a spiral air outlet grille for a better look and lower noise.
2. High energy efficiency with a DC inverter compressor, DC fan motor and 550mm big fan, larger heat exchanger, and built-in charge valve for safer and easier maintenance.
3. Low standby power consumption due to the new PCB program.
4. Comfortable to use with a new aerodynamics fan, enlarged air inlet path and spiral air outlet path, and an automatic sound-lowering program.

Product Usage Instructions

1. Read the user manual carefully before installing the unit.
2. Select the appropriate indoor unit from the available types according to your needs.
3. Ensure that the indoor unit connected to Flow Logic IV is the new indoor unit manufactured after January 1, 2019, with an upgraded PCB program.
4. Install the outdoor unit and indoor unit as per the instructions provided in the user manual.
5. After installation, turn on the unit and set the desired temperature and fan speed using the remote control or the unit’s control panel.
6. For maintenance or repair, refer to the user manual and use the built-in charge valve for safe handling of the unit.

Service Manual
Flow Logic (MINI) VVFA Series R410A English Manual
VVFA-125R-01M22 VVFA-150R-01M22 VVFA-150R-01T32

IMPORTANT NOTE: Read this manual carefully before installing or operating your new air conditioning unit. Make sure to save this manual for future reference. 22.AW.VVFA.125-150.R410A.SM.EN.05.03.Rev01

CONTENTS
1. General Information…………………………………………………………………………………1 1.1 Outdoor models and external appearance ……………………………………………..1 1.2 Indoor units………………………………………………………………………………………..2 1.3 Feature …………………………………………………………………………………………….4
2. Specification …………………………………………………………………………………………..5 3. Dimension………………………………………………………………………………………………7 4. Piping Diagram ……………………………………………………………………………………. 11 5. Wiring Diagram…………………………………………………………………………………….10 6. Capacity Calculation Due to Capacity Modification Coefficient …………………….12 7. Operation range…………………………………………………………………………………….14 8. Sound Level………………………………………………………………………………………….15 9. Outdoor Piping Installation ……………………………………………………………………..16
9.1 Product features ……………………………………………………………………………….16 9.2 Safety ……………………………………………………………………………………………..16 9.3 Transportation and lifting ……………………………………………………………………18 9.4 Installation instruction ………………………………………………………………………..19 10. Outdoor Wiring Installation ……………………………………………………………………28 11. Outdoor Unit PCB ………………………………………………………………………………..33 12. Dip Switch Setting ……………………………………………………………………………….34 13. Monitor Tools ………………………………………………………………………………………36 14. Outdoor Unit Control…………………………………………………………………………….38 15. Failure code………………………………………………………………………………………..42 16. Troubleshooting …………………………………………………………………………………..46

General Information

Outdoor models and external appearance
VVFA-125R-01M22 VVFA-150R-01M22 VVFA-150R-01T32

Indoor units

4-WAY CASSETTE TYPE/PB-700lB

CVQA-025/022/015N-01M22

CVQA-050/045/035N-01M22

4-WAY CASSETTE TYPE/CCV PANEL 90X90
AWSI-CCV018-N11 AWSI-CCV024-N11
AWSI-CCV030-N11 AWSI-CCV038-N11 AWSI-CCV048-N11

2-WAY CASSETTE TYPE/ P1B-1055IB
CVOA-025N-01M22 CVOA-035N-01M22 CVOA-040/050-01M22

SLIM LOW ESP DUCT

DVLA-025/022-01M22
DVLA-035N-01M22
DVLA-040N-01M22

ROUND-WAY SMART AIR FLOW CASSETTE/
Panel for CVTA
CVTA-025/022N-01M22 CVTA-035N-01M22 CVTA-050/045N-01M22 CVTA-070N-01M22 CVTA-110/090N-01M22

CVTA-160/140N-01M22

ONE WAY CASSETTE TYPE/Panel for CVPAto s12
CVPA-035N-01M22 CVPA-025/022N-01M22

MED ESP DUCT TYPE (50/100Pa)
DVMA-090N-01M22 DVMA-110N-01M22 DVMA-160/140N01M22

HlGH ESP DUCT TYPE DVMA-050N-01M22 DVMA-080/070N-01M22
DVMA-090N-01M22 DVMA-110N-01M22 DVMA-160/140N-01M22
DVHA-280/220N-01M22

CONVERTlBLE TYPE FVVA-025N-01M22 FVVA-050/045/035N-01M22
FVVA-090/080/070N-01M22 FVVA-140/110N-01M22

N HIGH WALL
HVVA-025/022N-01M22 HVVA-035N-01M22 HVVA-050/045N-01M22 HVVA-070N-01M22
HVVA-090N-01M22
HRV
AWSI-HRV0800-N11 AWSI-HRV1000-N11

MED ESP DUCT TYPE (50/100Pa) DVMA-015N-01M22 DVMA-022N-01M22 DVMA-025N-01M22 DVMA-035N-01M22 DVMA-045N-01M22
DVMA-050N-01M22 DVMA-080/070N-01M22
CONSOLE
XVVA-050/035/025N-01M22

Note: The indoor unit connected to Flow Logic IV must be the new indoor manufactured after January 1, 2019 (the PCB is upgraded program)

Feature

New platform, new outlook
Spiral air outlet grille Better outlook and lower noise Built-in charge valve Safer and easier maintenance Round corner Better outlook & safer

High energy efficiency

DC inverter compressor

Haier takes DC INV. compressor, 5% power input lower. (14kw)

DC fan motor and 550mm big fan

38% power input lower and 8% airflow higher

Larger heat exchanger

Heat exchange area rise by 10%. (14kw)

Charge Valve

Built-in charge valve enables safer and easier maintenance
Low standby power

New PCB program, reduce 20% standby power consumption

Comfort

New aerodynamics fan 550mm super big diameter aerospace helix fan. Lowering sound level 3 dB(A)
Enlarged air inlet path and spiral air outlet path
Air flow direction follows the grill direction. Lowering sound level 2-4 dB(A)
Automatic sound-lowering program
Night mode set by PCB, 8dB(A) lower

“7&3″(& &&3

Convenience

Double side “4 ” handles

Easy to carry
“888” test panel

All running data & error code can be checked from “888” screen, which

is easy for installers
“Four-way” pipe connection

4-way (front, back, left & right) pipe connection, easy to design and install

Model

Power supply

Rated capacity

Rated capacity

Rated power input

Cooling

Max. power input

EER

Rated current

Max. current

Rated capacity

Rated capacity

Rated power input

Heating

Max. power input

COP

Rated current

Max. current

Brand

Model

Type

Compressor

quantity

Capacity

Power Input

Compressor Rated current(RLA)

Speed

Crankcase Heater

Refrigerant oil

brand

Refrigerant oil type

Refrigerant oil

charge

Brand

Model

Voltage

IP Class

Type

Outdoor fan Insulation class

motor

Safe class

Power Input

Output

Rated current

Capacitor

Speed

Brand

Model

Outdoor fan

Material Type

Diameter

Height

13780 4130 15.8
75 28

13780 4130 15.8
80 28

13780 4130 15.8
85 28

Itochu.,LTD.,Shanghai Itochu.,LTD.,Shanghai Itochu.,LTD.,Shanghai

FV50S

FV50S

FV50S

1400

1400

1400

BROAD OCEAN SIC-88FWJ-F1180-1
310V IP44 DC
E I 2252 1802 0.40 / 900 GUOEN / Plastic Axial 550 200

BROAD OCEAN SIC-88FWJ-F1180-1
310V IP44 DC
E I 2252 1802 0.40 / 900 GUOEN / Plastic Axial 550 200

BROAD OCEAN SIC-88FWJ-F1180-1
310V IP44 DC
E I 2252 1802 0.40 / 900 GUOEN / Plastic Axial 550 200

Model Power supply
Number of rows Tube pitch(a)x row pitch(b) Fin spacing Fin type (code) Fin Coating Type Outdoor coil Salt Spray Test Duration

Ph/V/Hz
mm mm optional Hour

Tube outside dia.and type

Coil length x height

Number of circuits

Coating type

Salt Spray Test

Cabinet

Duration

coating

Sheet Metal Material

Sheet Metal

Thickness

Control panel enclosure IP class

Outdoor sound level(sound pressure level )

Outdoor sound level(sound power level )

Dimension(WDH)

Outdoor unit

Packing (WDH) Net weight

Gross weight

Refrigerant

Type Charged volume

Throttle type

Design pressure

Liquid pipe

Gas pipe

Total pipe lenth

Max. pipe

Refrigerant length(Equivalent/

piping

Actual)

Max.Diff. indoor/ outdoor unit

Max.Diff. indoor/ indoor unit

Connectable indoor unit ratio

Maximum indoor units

Connection Power wiring

wiring

Signal wiring

mm mm
Hour
mm standard
m3/h dB(A)
1.40 Corrugated Hydrophilic aluminum
500
Internal thread copper tube 7
1005*1302 10
Powder Coating
500
Hot zinc plate
0.8
IP24 7200
59

VVFA-150R-01M22
1/220~240/50/60 2
2118.186
1.40
Hydrophilic aluminum
500
Internal thread copper tube 7
10051302 10
Powder Coating
500
Hot zinc plate
0.8
IP24 720

(Outdoor higher than indoor) 40 (Indoor higher than outdoor)

50%~130% 8 10
Cooling: -15~48 Heating: -20~27

50%~130% 10 4
Shield wire:(0.75-2)*2 Cooling: -15~48 Heating: -20~27

50%~130% 13 10
Cooling: -15~48 Heating: -20~27

Norminal condition: indoor temperature (cooling): 27 DB/19 WB, indoor temperature (heating): 20 DB/14.5 WB. Outdoor temperature(cooling): 35 DB/24 WB, outdoor temperature(heating): 7 DB/6 WB The data is measured with 7.5m equivalent pipe and 0 m height difference. The noise level will be measured in the third octave band limited values in the semi-anechoic chamber, using a Real Time Analyser calibrated sound intensity meter. It is a sound pressure noise level.

Dimension

1340

600

370

406 450

950

Piping Diagram

Gas pipe stop valve

Oil segregator

Liquid pipe stop valve

Inverter compressor

Condensor TA

PS TS
TX1
Gas-liquid segregator

TE(1)

PMV

TX2 EEV

Subcooler

Part name Compressor Pressure switch Electronic expansion valve Solenoid valve 4-way valve Pressure sensor
Temp. sensor Heater

Sign / Function

Capacity control, meet indoor load request by adjusting frequency and opening and closing fixing frequency compressor.

Date

HPS High pressure protection

4.15Mpa, OFF

Note 20°C

EEV

In heating, refrigerant flow control (subcooling valve)

3.0

Keep balance of high/low pressure AC220V

SV1 when compressor starts up and stops Open when power is on, 2A

High/low pressure protection close when power is off.

4WV

Changing over between cooling and heating

AC220V electrified in heating; powered off in cooling or defrosting.

In heating, compressor frequency PD adjustment, abnormal pressure protection

In cooling, compressor frequency PS adjustment, abnormal pressure protection

TD

Detect the top temp. of compressor

R(80°C)=50K B(25/80°C)=4450K

TS

Detect the top suction of compressor

TA

Detect ambient temp., set primary fan speed and control defrost condition

TX1

Detect the temp. of before and after R(80°C)=10K B(25/80°C)=3700K the supercooling valve to control the supercooling valve open angle.

TX2

TE(1)

Detect frost condition of outdoor heat exchanger Chi Used to heat oil in inverter compressor 28W, 220V, one

Wiring -Diagram

0150518287

HPS TD TE(1) TS TA PS PD

SW1

CN33 CN24

CN15

SW4

SW2

ACFAN1

CN14 M

LED1 M

DCFAN1

DCFAN2

LED3 CN10

CN12

CN13

CN11

REACTOR

CN13 CN12 ACL

AC-N AC-L

DISPLAY BOARD
SW01 SW02 CN31 CN32

PMV2

PQ L N

CN8 CN9

CN7

TX1

Dial Switch Introduction

Control board for subcooling valve

TX2

WARNING

Dial Switch [1] [2] [3] [4] [5] [6] [7] [8] MODEL 1 is ON,

BM1 – 0 1 1 0 0 0 1

0 is OFF

1 0 0

Requires

set up on site. Please power off firstly for about 10

SYMBOL

minutes before checking control box, and make sure the voltage between P and N below 20V.

NOTES

SYMBOL SIGNIFICATION SYMBOL SIGNIFICATION

ACL ACN SV1

Power live line Power neutral line Unloading valve

TS

Compressor suction sensor

Compressor

TD

discharge sensor

Please check the power firstly before test , and make sure the crankcase heater powering on for 12 hours at least to protect compressor.
The switch BM1-1 is used for locking the indoor units number, the initial situation is ” OFF”. After power on, the display board will display U, “” indicates

4WV

4-way valve

LED1-4 DCFAN2 DCFAN1

Lights DC fan motor DC fan motor

HPS

High pressure switch

TA TE(1) PD
PS

Ambient temp. sensor Defrost temp. sensor High pressure sensor Low pressure sensor the number of Indoor units that the outdoor unit can communicate with. If it can match the actual number of indoor units, please change “OFF” to “ON”, or else fix the communication problem firstly.

HEATER Electric heating tape LD1-3 Digtal display tubules SW01,02 Thumb wheels

Tfin EEV TX1

IPM temp. sensor
Electronic expansion valve
TC1 temp. sensor of control board for subcooling valve

Forbid connecting the power wire to the “P” and “Q”, otherwise the control board will be damaged.

PC PMW2

Monitor
Electronic expansion valve

TX2 R

TC2 temp. sensor of control board for subcooling valve Red

Please make sure the earth wire connecting the grou- SW1-4 Button

Please power off firstly for about 10 minutes before checking control box, and make sure the voltage between P and N below 20V.

NOTES

Please check the power firstly before test , and make sure the crankcase heater powering on for 12 hours at least to protecting compressor.
The switch BM1-1 is used for locking the indoor units number, the initial situation is ” OFF”. After power on, the display board will display U, “” indicates the number of Indoor units that the outdoor unit can communicate with. If it can match the actual number of indoor units, please change “OFF” to “ON”, or else fix the communication problem firstly.
Forbid connecting the power wire to the “P” and “Q”, otherwise the control board will be damaged.
Please make sure the earth wire connecting the grounding hole on the electric box firmly.

HEATER Electric heating tape

SV1

Unloading valve

DC fan motor
AC fan motor
High pressure switch
Compressor discharge sensor

TE(1) TS

Defrost temp. sensor
Compressor suction sensor

TA

Ambient temp. sensor

PD PS EEV Tfin
PMV2 TX1 TX2 W B L B R

signification

High pressure sensor
Low pressure sensor Electronic expansion valve IPM temp. sensor Electronic expansion valve
TC1 temp. sensor of control board for subcooling valve TC2 temp. sensor of control board for subcooling valve
White BLUE Black Red

Capacity Calculation Due to Capacity Modification Coefficient

Calculation method of refrigerating capacity—-cooling capacity to be known=refrigerating capacity(ABCD*E)W

Standard capacity
Capacity modification value

Capacity compensation value of indoor air wet-bulb temperature condition
Capacity modification value

Indoor air wet-bulb temperature (°C )

Capacity compensation value of outdoor air dry-bulb temperature condition

Outdoor air dry-bulb temperature (°C )

Capacity modification value under airflow variation rate of indoor unit group (only for duct unit)

Capacity compensation suitable for total capability of indoor unit group

Capacity modification value

Airflow variation rate (%)

Total capacity of indoor unit group (%)

Capacity compensation value of pipe length, pipe diameter and height drop

Notes for E

value 20m

from figure E. 25m 30m

Calculation method of refrigerating capacity—-heating capacity to be known=refrigerating capacity(ABCDEF)W

Capacity compensation value of indoor air dry-bulb temperature condition
Capacity compensation value of outdoor air wet-bulb temperature condition

Outdoor air wet-bulb temperature (°C)

Notes for E: (1) The main pipe (from outdoor to the first branch pipe) diameter should be enlarged one size when the single way pipe length is over 90m. (2) When in cooling mode, outdoor is lower than indoor; or when in heating mode, outdoor is higher than indoor, the compensation factor should be decreased the below value from figure E.

Vertical height drop between indoor and outdoor

Outdoor temperatureDB Consecutive operation
Outdoor temperatureDB Consecutive operation

Operation range

Cooling

Indoor temperatureDB

Heating

Indoor temperatureDB

Sound Level

Testing illustration

1.11.188mm

11mm

Testing condition:

Unit running in the nominal condition
Test in the semi-anechoic chamber
Noise level varies from the actual factors such as room structure, etc.

Octave band sound pressure level dB

20 Limit of audible continuous
10 noise 63 125 250 500 1000 2000 4000 8000
Octave band center frequency (Hz)

Octave band sound pressure level dB

VVFA-150R-01M22 VVFA-150R-01T32

NC-20
20 Limit of audible continuous
10 noise 63 125 250 500 1000 2000 4000 8000
Octave band center frequency (Hz)

Outdoor Piping Installation

Product features

The outdoor uint adopts “simultaneous control” type, all indoors should be heating or cooli.ng simultaneously. · To protect compressor,before startup,the unit should be electrified for 12 hours.If the unit is not used for a long time, please cut off the power to save energy, or the unit will consume the power. This manual describes the installation and installation of outdoor units. For the installation of the indoor machine, please refer to the instruction manual of the indoor machine. Please read the installation instructions carefully before installation, according to the instructions of the installation construction.
Safety

If the air conditioner is transferred to the others, this manual should be tranferred together. · Before installation, please read “Safety precaution” carefully to confirm the correct installation. · The mentioned precaustion includes ” WARNING” and ” CAUTION”. The precausion caused death or heavy injury for faulty installation will be listed in ” WARNING”. Even the cautions listed in ” CAUTION” also may cause serious accident. So both of them are related to the safety, and should be executed severely.
After installation, perform a trial and confirm everything normal, then introduce the operation manual to the user. Besides, put the manual to the user and ask them to preserve it carefully.

WARNING

The installation or the maintenance should be performed by the authorized agency. Or the non-specialized operation will cause water leakage, electric shock or fire etc accidents.
The installation should be executed as per the manual, or the faulty installation will cause water leakage, electric shock or fire etc accidents.
Please install the unit at the space which can bear the weight. Or the unit will drop down to cause the human injury.
The installation should defend against the typhoon, and the earthquake etc. Abnormal installation will cause the unit fall down.
Use the correct cable and make reliable earthing. Fix the terminal firmly and the loose connection will cause heating or fire etc accident.
The wiring should be in shape and can not be raised. Be earthed firmly and can not be clipped by the electric box cover or the other plate. The incorrect installation will cause heating or fire.
When setting or transferring the unit, there should not be other air into the refrigerant system except for R410A. The gas mixture will cause the abnormal high pressure which will cause break or human injury etc accidents.
When installation, please use the accessories with the unit or the special parts, or it will cause water leakage, electric shock, fire, refrigerant leakage etc accidents.
Don’t lead the water drainage pipe into the drainage groove with the poisonous gas, such as sulphur. Or the poisonous gas will enter indoor.
In installation or after installation, please confirm if there is refriegerant leakage, please take measures for ventilation. The refrigerant will cause poisonous gas as meeting fire.
Don’t install the unit at the place where there may be flammable gas leakage. In case the gas leaks and gather around the unit, it will cause fire.
The drainage pipe should be installed as per the manual to confirm the fluent drainage. Also take measures for heat insulation against dew drop. Incorrect water pipe installation will cause water leakage even and make the things wet.
For the liquid pipe and the gas pipe, take measures for heat insulation too. If there is no heat insulation, the dew drop will wet the things.
PROHIBIT
Th is system using R410A refrigerant, prohibit filling oxygen, acetylene or other flammable and toxic gases in the air or test, because these gases are very dangerous and may cause explosion. It is recommended to use compressed air, nitrogen or refrigerant for such tests.
Indoor or outdoor machines are not allowed to water. All of these products are equipped with electrical components, which may cause serious electric shock accidents.
Do not touch or adjust the safety device in the indoor or outdoor machine. If touching or adjusting these devices can cause serious accidents.
The maintenance cover plate of the indoor or outdoor machine is forbidden when the main circuit power supply is not cut off.
The leakage of refrigerant can cause the air to be thin and difficult to breathe. In case of refrigerant leakage, close the main valve, extinguish any flame and contact the local distributor immediately.
Please use ELB (leakage protector). If not used, an electric shock or fire may occur when an accident occurs. · The installation and Service Engineer shall ensure that the refrigerant leaks comply with local laws and regulations.

CAUTION

Execute earthing for the unit. But the earthing wire can not be connected to the gas pipe, water pipe, lightening rod or the telephone earthing wire. Improper earthing will cause electric shock.
Don’t install the unit at the place where leaks the flammable gas. Or it will cause fire. · Execute the water drainage pipe according to the manual, improper installation will cause water leakage to wet
the family things.
The outdoor fan can not face to the flower or the other vegetable, or the blowing gas will make the flower dried up.
Please ensure the maintenance room, if not, it will cause the maintenance person damaged. · When installing the unit on the roof or the other high place, to prevent the person falling down, please set the fixed ladder and the railing at the passage. · Use the two-end spanner, and fasten the nut at proper torque. Don’t fasten the nut excessively against the flared setion broken. Or it will cause refrigerant leakage and lack of oxygen.
Take measures for heat insulation to the refrigerant pipe, or there will be water leakage or dew drop to wet the family things.
After finishing the refrigerant pipe, make leakage test by charging the nitrogen. In case the refrigerant leaks in a small room and exceeds the limited concentration, it will cause lack of oxygen.
Don’t use the other refrigerant except for R410A. The R410A pressure is 1.6 times higher than R22 pressure. The refrigerant R410A tank is marked with pink sign.
Against charging different refrigerant, we changed the stop valve diameter of the R410A unit. To enhance the compression consistance, we also changed the flared pipe dimension. Prepare the R410A specially tools according to the below table.

R-410A specified tools 1 Gauge manifold 2 Charge hose 3 Electronic balance for charging R410A 4 Torque spanner 5 Flare tool 6 Copper pipe gauge for adjusting projecting margin 7 Vacuum pump adapter 8 Leakage detector

Remarks Range: HP 4.5MPa, LP 2MPa Pressure: HP: 5.3MPa, LP: 3.5MPa Can not use the measurable charging tank
Must be with reverse stop valve Can not use freon leakage detector, but the He detector

When charging refrigerant, the refrigerant must be taken out as liquid state from the tank. · When installing the power cord and the connecting line must be at least 1m from the TV or radio, so as to avoid
image interference or noise.
In the room with fluorescent lamp (reverse or fast start type), remote control signal transmission distance may not reach the predetermined value, so the indoor machine installed away from the fluorescent lamp as far as possible.
Please use the fuse to meet the capacity requirements. · To prevent the destruction of wires, electrical components, etc. by rats or other animals. · Recommended room ventilation every 3 to 4 hours.

Arrival inspection

After receiving the machine, should check whether there is transport damage. If any damage is found on the surface or inside, it shall be reported immediately to the shipping company in writing.
Check the product model, electrical parameters (power supply, voltage, frequency) and accessories to determine whether they meet the requirements.

Transportation and lifting

Lifting

In front of the unit shipped from unpacking location as close as possible.

rope

Over 60 degrees 0.7~1.0 meters

CAUTION

Do not place anything on the device.
Two ropes shall be used for lifting the outdoor unit.

Hoisting method

Hoisting to ensure that the level of outdoor machine, slowly lifting. 1. Removal of outer packing is strictly prohibited 2. As shown by two ropes hoist with outdoor machine packaging.
Do not remove packing tape and packing box.

CAUTION

In order to ensure safety, maintain the level of lifting, slowly lifting.
Do not lift the elevator to the packing and outer packing of the equipment.
External protection should be used when lifting, such as cloth or cardboard.

As shown in the rope through the wood base around the lifting hole.

Manual handing

CAUTION

In the installation and commissioning, the outdoor machine do not put any irrelevant material, to ensure that there is no debris inside the machine, or there may be a fire or accident.

Pay attention to the following points when handling the equipment manually: 1. No demolition wood base. 2. In order to prevent the dumping of the outdoor machine, the center of gravity of the unit should be noted as shown in the figure. 3. Two or more people to carry out the outdoor machine.
This product maximum tilt angle 20 degrees.

Installation instruction

In installation, please check specially the below items:

If the connected units quantity and the total capacity is in the allowable range? · If the refrigerant pipe length is in the limited range? · If the pipe size is proper? And if the pipe is installed horizontally? · If the branch pipe is installed horinzontally or vertically? · If the additional refrigerant is counted correctly and weighed by the standard balance? · If there is refrigerant leakage? · If all the indoor power supplies can be on/off simultaneously? · If the power voltage is in compliance with the data marked on the rating label? · If the address of indoors has been set?

Before installation

Before installation, check if the model, power supply, pipe, wires and parts purchased respectively are correct. 2) Check if the indoors and outdoors can be combined as the following.

Outdoor

Indoor

HP

Capacity (100w)

Combination type

Indoor qty

Total indoor capacity (HP)

5 126

Single

8

2.5-6.3

6 140

Single

10

3-7.8

7 155

Single

13

3.5-9.1

Notice: · Total capacities of indoor units being used 100% of rated
capacities of outdoor unit. · The maximum number of connections in accordance with
the indoor units 2200W. At the same time in order not to affect the use of results, the maximum number of indoor machine connection recommended in accordance with 6/8/9.

Indoor capacity (100W)

Total indoor capacity Branch pipe (optional) (100W)

less than 335

TAU-335

(2) Installation place selection

Air-conditioner can’t be installed in the place with inflammable gas. Or it will cause fire hazard.

The unit should be installed at the place with good ventilation. No obstacle at the air inlet/outlet. And no strong wind blows the unit.

The unit should be installed at the strong enough place. Or it will cause vibration and noise.

The unit should be installed at the place where the cold/ hot air or noise will not interfere the neighbours.

The installation space refers to the latter info.
· The place where the water can flow fluently.
· The place where no other heat source will affect the unit.
· Pay attention to the snow against clogging the outdoor.
· In installation, install the antivibration rubber between the unit and the bracket.

The unit is better not be installed at the below places, or it will cause damage.
The place where there is corrosive gas (spa area etc).
The place blowing salty air (seaside etc). · Exsits the strong coal smoke. · The place with high humidity. · The place where there is device emitting Hertzian waves.
The place where voltage changes greatly.

Note: 1. In snowy area, install the unit under the bracket or the snow- proof cover against the accumulative snow on the
unit. 2. Do not install the unit at the place where the flammable gas will leak. 3. Install the unit at the strong enough place. 4. Install the unit at the flat place. 5. When being installed at the place with strong wind, set the air outlet of the unit and the wind direction vertical. 6. The installation site should be far away from the place where the noise is higher. At the same time for the noise
of higher places should ensure that the outdoor machine vibration and wall insulation measures to prevent vibration caused by thin wall or acoustic noise problems. 7. Aluminum foil fin is very sharp, pay attention to prevent scratches. 8. In addition to the maintenance of the roof, or the installation of outdoor machines, other people can not contact the outdoor machine.

Installation and maintenance space

Selection of installation location of outdoor (1) Single-unit installation (unit: in.(mm))
The top and two side surfaces must be exposed to open space, and barriers on at least one side of the front and back shall be lower than the outdoor unit. (2) Multi-unit installation (unit: in.(mm))

Multi-unit installation in front and back (unit: in.(mm))

The top and two side surfaces must be exposed to open space, and barriers on at least one side of the front and back shall be lower than the outdoor unit.
· The installation service spaces shown in the illustrations are based on an air intake temperature of 95°F(35°C)(DB) for COOL operation. In regions where the air intake temperature regularly exceeds 95°F(35°C)(DB), or if the heat load of outdoor units is expected to regularly exceed the maximum operating capacity, reserve a larger space than that indicated at the air intake side of units.
· Regarding the required air outlet space, position the units with consideration to the space required for the onsite refrigerant piping work as well. Consult your dealer if the work conditions do not match those in the drawings.

Precautions on installation

_ NOTICE: _If drain holes of the outdoor unit are covered by a mounting base or by floor surface, raise the unit in order to provide a free space of more than 5in.(130mm) under the outdoor unit. Foundation work · Check the strength and level of the installation ground so that the unit will not
cause any operating vibration or noise after installation. · In accordance with the foundation drawing in the figure, fix the unit securely
by means of the foundation bolts. · It is best to screw in the foundation bolts until their length are 0.8in.(20mm)
from the foundation surface. 5in.(130mm)

Fix the outdoor unit to the foundation bolts using nuts with resin washers(1) as shown in the figure.
If there is no need to install the outdoor machine in the open space of the building or the enclosure, the following two ways can be used to avoid the fan reversal or damage caused by strong wind blowing.

(1) Using the windshield

(2) Near wall installation

Wind deflector

Fierce wind

More than 2000mm 21

Fierce wind

If the coating on the fastening area is stripped off, the nuts rust easily. Dimensions (bottom view) (unit of measurement: mm)

A leg pitch1 B leg pitch2 C Front grill (air outlet side) D Drain hole E Bottom frame F Knock-out hole (for piping line)

Refrigerant pipe connection

Pipe connection method:

To ensure the efficiency, the pipe should be as short as possible. · Daub the refrigerant oil on the connector and the flare nut. · When bending the pipe, the bending semi-diameter should be as large
as possible against the pipe being broken or bent. · When connecting the pipe, aim at the center to thread the nut by hand
and tighten it with the double spanners. · Don’t let the impurity such as sand, water etc into the pipe.

When fastening and loosing the nut, operate with double spanners, because only one spanner cannot execute firmly. Spanner Connector Nut Spanner If threading the nut as not aiming at the center, the screw thread will be damaged, further it will cause leakage.

Cautions in piping installation

When welding the connector with hard solder, charge nitrogen into the pipe against oxidation. Or the oxygen film in the pipe will clog the capillary and the expansion valve, even caue the deathy accident.
The refrigerant pipe should be clean. If the water and the other impurity enter the pipe, charge the nitrogen to clean the pipe. The nitrogen should flow under the pressure of about 0.5Mpa and when charging the nitrogen, stop up the end of the pipe by hand to enhance the pressure in the pipe, then loose the hand (meanwhile stop up the other end).
The piping installation should be executed after the stop valves are closed. · Before welding the valve and the pipes, use the wet cloth to cool down the valve and the pipes. · When the connection pipe and the branch pipe need to be cut down, please use the special shears and cannot use the saw.

Pipe material and specs selection

Drain pipe disposal

1.Please select the refrigerant pipe of the below material. Material: the phosphoric oxidize seamless copper pipe, model: C1220T-1/2H (diameter is over 19.05); C1220T-0 (diameter is below 15.88). 2.Thickness and specs: Confirm the pipe thickness and specs according to the pipe selection method(the unit is with R410A, if the pipe over 19.05 is 0-type, the pressure preservation will be bad, thus it must be 1/2H type and over the min. thickness. 3.The branch pipe must be from Haier. 4.When installing the stop valve, refer to the relative operationinstruction. 5.The pipe installation should be in the allowable range. 6.The installation of branch pipe and gather pipe should be performed according to the relative manual.

Make sure the drain works properly.
In regions where buildups of snow can be expected, the accumulation and freezing of snow in the space between the heat exchanger and external plate may lower operating efficiency.
After punching the knock-out hole, the application of repair-type paint on the surface around the edge sections is recommended to prevent rust.

Pipe specification

Pipe “a” diameter (between indoor and branch pipe) (depends on indoor pipe) Please refer to the indoor air conditioner manual.
Pipe “b” diameter (between branch pipes)

Total indoor capacity after the branch pipe (x100W)

Gas pipe (mm) Liquid pipe (mm)

X<112 112X< 234

Pipe “c” diameter ( outdoor pipe diameter)

Copper pipe selection:

Outdoor capacity (100W)
126
140
155

Gas pipe (mm)

Liquid pipe (mm)

Ø15.88 Ø9.52

Enlarged pipe (mm) Gas pipe Liquid pipe

Ø19.05

Ø12.7

Piping connection method: Pipes can be connected in four directions

hardness

Softness

Outer diameter (mm) Ø6.35 Ø9.52 Ø12.7 Ø15.88

Min. thickness (mm) 0.8 0.8 1.0 1.0

hardness

Half-hardness

Outer diameter (mm) Ø19.05 Ø22.22 Ø25.24 Ø28.58

Min. thickness (mm) 1.0 1.1 1.2 1.4

Note: If the copper pipe with outer diameter 19.05 is coil pipe, the thickness should be over 1.1.

charging pipes liquid pipes
Enlarged diagram

gas pipes

F

E

C

A

B

D
A, B, C, D:Copper pipe hole E:Power cord hole (with its own cable sheath) F:Communication line hole
As shown in the figure, the piping can be connected from four directions. Through the front / rear hole piping piping on the cover hole or crack directly across the floor. From the outdoor machine unloading piping cover with a screwdriver and hammer knock off holes along the guide wire break. Then, trim the edges of the holes, and mounted on the insulating sleeve (site) to protect the piping and wiring.
23

Long pipe and high drop 1. Allowable pipe length and height difference
Outdoor unit

First branch piping

Indoor unit

H h

Permissible value

Total length of piping (actual length)

300m

Single way max. pipe length

Actual length

150m

Piping length

Pipe length between outdoor and first branch pipe
Pipe length after first branch pipe (length between first branch & farthest indoor)

110m 40m

Pipe length between the indoor unit & the nearest branch length

10m

Height difference between Indoor below outdoor

50m

Height difference

indoor and outdoor unit

Indoor above outdoor

40m

Height difference between indoor units

15m

Note: When the single way pipe length is over 30m, the main pipe should be the enlarged diameter.

Unit pipe spec and connection method (unit: mm) A. Outdoor unit

C. Pipe spec and the torque

Model
4HP 5HP 6HP

Gas pipe side

Diameter Connecting

(mm)

method

Ø15.88

Ø15.88 Flared joint

Ø15.88

Liquid pipe side

Diameter Connecting

(mm)

method

Ø9.52

Ø9.52 Flared joint

Ø9.52

B. Indoor unit Please refer to the indoor air conditioner manul. Connecting method: Flared joint

Branch pipe

Outdoor unit type Branch pipe selection:

Diameter (mm) Thickness (mm) Torque (N.m)

Not less than Ø28.58 More than 1.4

Note: If the copper pipe with outer diameter 19.05 is coil pipe, the thickness should be over 1.1.

Total indoor capacity (100W) Less than 335

Model (optional) TAU-335

Note: 1. When connecting the pipe and the outdoor, please pay attention to the outdoor pipe dimension. 2. When adjusting the diameter among pipes and among the units, please must execute at the branch pipe side. 3. When welding with hard solder, please must blow nitrogen. If not, a number of oxide will be produced and cause
heavy damage.Besides,to prevent water and dust into the pipe, please make the brim as outer roll.
Cut off pipe with the cutter

Adhesive side

Prepare on field

Cut off at the middle

Seal the connection and wrap the heat insulator with adhesive tape

Connection wire

Gas pipe and liquid pipe should be heat insulated separately. · The material for gas pipe should endure the high temperature over 120°C.That for liquid pipe should be over 70°C. · The material thickness should be over 10mm, when ambient temp. is 30°C, and the relative humidity is over 80%, the material thickness should be over 15mm. · He material should cling the pipe closely without gap, then be wrapped with adhesive tape. The connection wire can not be put together with the heat insulation material and should be far at least 20cm.

Liquid pipe

over 20cm Adhesive tape Gas pipe Heat insulator

Fix the refrigerant pipe

In operation, the pipe will vibrate and expand or shrink. If not being fixed, the refrigerant will focus on one part to cause the broken pipe.
To prevent the central stress, fix the pipe for every 2-3m.

Pipe installation

When doing the piping connection, please do the following:

Please don’t let the pipe and the parts in the unit collide each other. · When connecting the pipes, close the valves fully. · Protect the pipe end against and water, impurities (welding after being flatted, or being sealed with adhesive tape).
Bend the pipe as large semi-diameter as possible(over 4 times of the pipe diameter). · The connection between outdoor liquid pipe and the distributing pipe is flared type. Please expand the pipe with
the special tool for R410A after installing the expanding nut. But if the projecting pipe length has been adjusted with the copper pipe gauge, you can use the original tool to expand the pipe.
Since the unit is with R410A, the expanding oil is ester oil, not the mineral oil. · When doing the flare connection, please do the following: When connecting the expanding pipe, fasten the pipes with double-spanner. The torque refers to the former info.

Expanding pipe: A(mm)

Pipe outer diameter (mm)

Projecting length of pipe to be expanded: B(mm)

Pipe outer diameter When it is hard pipe

The outdoor gas pipe and the refrigerant distributing pipe, as well the refrigerant distributing pipe and the branch pipe should be welded with hard solder.

Weld the pipe at the same time charge the nitrogen. Or it will cause a number of impurity (a film of oxidation) to clog the capillary and the expansion valve, further cause the deadly failure.
Protect the pipe end against the water, impurity into the pipes (welding after being flat, or being sealed with adhesive tape).

Flat

Seal the pipe end with adhesive tape or the stopper to increase the resistance, fill up the pipe with nitrogen. Taping

Adhesive tape

The refrigerant pipe should be clean. The nitrogen should flow under the pressure of about 0.2Mpa and when charging the nitrogen, stop up the end of the pipe by hand to enhance the pressure in the pipe, then loose the hand (meanwhile stop up the other end).
When connecting the pipes, close the valves fully.
When welding the valve and the pipes, use the wet cloth to cool down the valve and the pipes.

Only nitrogen gas Brazing can be used

1st side 2nd side Source valve
0.2MPa Hand

Leakage test

The outdoor unit has been executed the leakage test in the factory. After connecting the distributing pipe, execute the leakage test from the outdoor check valve and the indoor. Besides, while testing, the valves should be close.
Refer to the below figure to charge the nitrogen into the unit to take a test. Never use the chlorin, oxygen, flammable gas in the leakage test. Apply pressure both on the gas pipe and the liquid pipe.
Apply the pressure step by step to the target pressure.
Apply the pressure to 0.5MPa for more than 5 minutes, confirm if pressure goes down.
Apply the pressure to 1.5MPa for more than 5 minutes, confirm if pressure goes down.
Apply the pressure to the target pressure (4.0MPa), record the temp. and the pressure.
Leave it at 4.0MPa for over 1 day, if pressure does not go down, the test is passed. Meanwhile, when the temp. changes for 1degree, pressure will change 0.01MPa as well. Correct the pressure.
After confirmation of a~d, if pressure goes down, there is leakage. Check the brazing

Check valve

position, flared position by laying on the soap.

To indoor

Gas pipe

modify the leakage point and take another leakage test.

Gauge manifold

Gas pipe

After leakage test, must execute the evacuation.

Nitrogen

Lo
Lo handle

Hi
Hi handle

Check hole

Evacuation

Evacute at the check valve of liquid stop valve and both sides of the gas stop valve.

Outdoor

Operation procedure:

Leakage test passed Evacuation begins Evacuation ends
Check vacuum Charge refrigerant

After reaching -101KPa or less (below -755mmHg), let the vacuum pump running continuously for over 1hour.

Leave it for over 1 hour, vacuum pointer does not arise.

If vacuum pointer arises, it shows there is water or leakage in the system, please check and modify it, and then evacuate again.
Because the unit is with refrigerant R410A, the below issues should be paid attention: · To prevent the different oil into the pipe, please use the special tool for R410A, especially for gauge manifold and
charging hose. · To prevent the compressor oil into the refrigerant cycle, please use the anti-counter-flow adapter.

Check vale operation

Open/close method: · Take down the valve cap. · Turn the liquid stop valve and the gas stop valve with hexangular spanner until it stops. If opening the valve strongly, the valve will be damaged. · Tighten the valve cap.

Tighten torque as the table below:

For gas pipe For liquid pipe

Tighten torque N.m

Shaft (valve body) Cap (cover)

Less than 7

Less than 30

7.85 (MAX15.7) 29.4 (MAX39.2)

T-shape nut (check joint) 13

Additional refrigerant charging

Charge the additional refrigerant as liquid state with the gauge. If the additional refrigerant can not be charged totally when the outdoor stops, charge it at the trial mode. If the unit runs for a long period in the state of lack of refrigerant, compressor will occur failure. (the charging must be finished within 30 minutes especially when the unit is running, menawhile charging the refrigerant).
A. Charging amount when out of factory excludes the refrigerant in the pipe. B. The unit only is charged the standard volume of refrigerant (distributing pipe length is 0m). Additional charging amount=actual length of liquid pipe x additional amount per meter liquid pipe Additional charging amount=L1×0.35+L2×0.25+L3×0.17+L4×0.11+L5×0.054+L6×0.022 L1: total length of 22.22 liquid pipe; L2: total length of 19.05 liquid pipe; L3: total length of 15.88 liquid pipe; L4: total length of 12.7 liquid pipe; L5: total length of 9.52 liquid pipe; L6:total length of 6.35 liquid pipe; C. Refrigerant charging and additional charging

Charge when out of factory Refer to label

Note

To prevent the different oil into the pipe, please use the special tool for R410A, especially for gauge manifold and charging hose.
Mark the refrigerant type in different colour on the tank. R410A is pink. · Must not use the charging cylinder, because the R410A will change when transferring to the cylinder. · When charging refrigerant, the refrigerant should be taken out from the tank as liquid state. · Mark the counted refrigerant volume due to the distributing pipe length on the label.

GWP: 2088 The product contains fluorinated greenhouse gases and its functioning relies upon such gases.

Refrigerant recovery

Start: press the main control board of the Start and Stop keys at the same time for 5 seconds, the machine enters the refrigerant automatic recovery control: the compressor starts, the right side of the machine C0 and Ps digital tube flashing, lasted for about 3 minutes.
Operation: when the digital tube C1 and Ps alternately flashing, manually shut off the liquid pipe valve, the refrigerant recovery.
Off valve: when Ps < 1kg, digital tube display C2, fast manual shut-off valve, 5S after the system shut down. · End: manual power down for program reset. Note: heating, standby or shutdown: outdoor machine forced to refrigeration operation.

Outdoor Wiring Installation

WARNING

Switch off the main power switch of the indoor and outdoor machine for more than 1 minutes before the wiring or regular inspection.
To prevent the destruction of wires and electrical components by rats or other animals. Serious, it may lead to the occurrence of fire.
To avoid damage to the wire, avoid contact with refrigerant pipes, steel edges and electrical components. Serious, it may lead to the occurrence of fire.

Inspect

To ensure that the electrical equipment used on the installation site (main power switch, circuit breaker, wire, conduit and wiring terminals, etc.) have been selected according to current data, to ensure that the device in line with national standards.
Check the power supply voltage in the range of 10% of the rated voltage and the ground wire is included in the power supply line. Otherwise, electrical parts will be damaged.
Check whether the power supply is satisfied. Otherwise, the compressor will not start when the voltage is too low.
By measuring the insulation resistance between the ground and the electrical device terminals, to ensure that more than 1 M. Otherwise, the system can not be started until the cause of leakage and maintenance.

CAUTION: Secure the power cord with a wire tie in the machine.
Note: when the wiring of the outdoor machine is not using the wire, it should be fixed with the rubber ring.
CAUTION : In the case of 3 phase 5 wire type, the power supply of the indoor machine must be connected use L1 line and N line, prohibit the use of L1-L2, L1-L3, Otherwise the electrical part will be damaged.

· Connect the power cord to the terminal of the indoor unit and the outdoor mechanical and electrical gas box, connect the ground wire to the grounding bolt of the outdoor machine and the indoor mechanical and electrical air box.
· Connect the external and internal communication lines to the 1 and the 2 terminals on the terminal. If the power cord is connected, the printed circuit board will be damaged. And the use of shielded twisted pair wire.
· Do not connect the fastening screws on the front of the cover. · The power cord must be made of copper wire, and the power
supply must be in line with IEC 60245 requirements. If the power cord length exceeds 20m, the need to increase the size. · The power supply line is fixed with a round connection terminal with an insulating protective sleeve. Not with sheet metal contact and extrusion, in order to avoid the cut line of skin caused by fire.

Communication wiring figure
PQ

Indoor 1 AC fan motor)
PQABC

Indoor 2DC fan motor)
PQABC

Indoor 3
PQABC

Indoor 4
PQABC

Indoor 5
PQABC

Indoor 6
PQABC

The master outdoor and all indoor units are in parallel through 2 non-polar wires. There are three connecting ways between wired control and indoor units: A. One wired controller controls multiple units, as shown in the above figure, (1-3 indoor units). The indoor unit 3 is the wired control master unit (directly connected to the indoor unit of wired controller) and others are the wired control slave units. indoor unit 2 is DC fan motor models, indoor unit 1 is the AC fan motor models. The wired controller is connected with the master unit and DC fan motor models through three lines with polarity. Other indoor units and the master unit are connected via two lines with polarity. SW01 on the main unit is set to 0 while SW01 on other slave units are set to 1, 2, 3 and so on in turn. (Please refer to the dip switch setting) B. One wired controller controls one indoor unit, as shown in the above figure (indoor unit 4-5). The indoor unit and the wired controller are connected via three lines with polarity. C. Two wired controllers control one indoor unit, as shown in the figure (indoor unit 6). Either of the wired controllers can be set to be the master wired control while the other is set to be the slave wired controller. The master wired controller, slave wired controller and indoor units are connected via three lines with polarity.

29

Type AC fan motor
DC fan motor
outdoor
VVFA-150R-01T32

Series 4-way Cassette 2-way Cassette
Convertible Slim Low ESP Duct
Low ESP Duct
Medium ESP Duct
High ESP Duct Fresh Air
Built-In Floor Standing Round Flow 4-Way Cassette
Mini 4-Way Cassette One Way Cassette DC Slim Low ESP Duct
High ESP Duct Console
N Plate High Wall EK High Wall

outdoor
VVFA-125R-01M22 VVFA-150R-01M22

power source: 3N~, 380-415V, 50/60Hz
indoor 1 (wall mounted unit)

power source: 1PH, 220-240V~, 50/60Hz
indoor 2 (wall mounted unit)

indoor 3 (non wall mounted unit)

power source: 1PH, 220-240V~, 50/60Hz

power source: 1PH, 220-240V~, 50/60Hz

power source: 1PH, 220-240V~, 50/60Hz

Indoor and outdoor use their individual power source. All indoors use one power source. Must install the leakage breaker and the over current breaker, or electric shock will occur.

Outdoor power source and power cable

Individual power

Item
Model
VVFA-125R-01M22 VVFA-150R-01M22 VVFA-150R-01T32

Power source
1PH, 220-240V~, 50/60Hz
3N~,380-415V, 50/60Hz

Power cable Circuit

Rated current of residual circuit breaker (A)
Ground fault interruptor (mA) response time (S)

Ground wire

· Power cable must be fixed firmly. · To avide electrical shock, make sure to disconnect the power supply 1 minute or more before servicing the electrical parts.Even after 1 minute,always measure the voltage at the terminals of main circuit capacitors or electrical parts and before touching, make sure that those voltages are 50VDC or less. · To persons in charge of electrical wiring work: Do not oerate the unit until the refrigerant piping is complete. (Running it before the piping is ready will break the compressor) · Each outdoor must be earthed well. · When power cable exceeds the range, thichen it appropriately. · The appliance shall be installed in accordance with national wiring regulations. · All wiring must be performed by an authorized electrician. · Be sure to install an earth leakage circuit breaker in accordance with applicable legislation. Failure to do so many cause electrical shock.

Indoor power source and communication wiring

PROHIBIT

· Power lines shall not use other wires other than copper wire. · All internal and external machines must be connected to the ground of the power supply. The earthing wire shall not be connected to the ground wire of the gas pipe, water pipe, lightning rod or telephone. If the grounding is not appropriate, may cause electric shock or fire. · Power supply must be installed leakage circuit breaker, otherwise, may cause electric shock or fire. · The operation and maintenance of electrical equipment shall be carried out under the condition that the power supply is cut off. · The indoor and outdoor units set their own independent power supply. · The signal line and the power line must be independent, non electric signal line access.

· Power cable and communication wire must be fixed firmly. · Each indoor must be grounded well. · When power cable exceeds the range, increase the gauge appropriately. · Shielded layer of communication wires must be connected together and be earthed at single point. · The total length of communication wire cannot exceed 1000m.

Communication wire for wired controller

Wire length(m) 250

Wire spec 0.75mm2 ×(3-core) shielded wire

· Shielded layer of communication wire must be grounded at one end. · The total length cannot exceed 250m.

Outdoor unit electrical wiring diagram

Ground wire

Power cord Communication line Fixing the power line and communication line with a wire clip on the partition board

Error

Power lines and communication lines need to be flame retardant and high temperature resistant wire wrap With plastic pipe insulation on the refrigerant pipe Protection of power line and communication line hole with wire sheath Power line machinery and piping need to be wrapped with flame retardant tape When using a single terminal without terminal, the terminal can not be directly used without flux. Otherwise, it will cause abnormal heating of terminal crimping part. If a single core wiring is used in the wiring, it can be connected directly in the manner shown in the diagram.

Dip Switch Setting

BM1 introduction

Definition Indoor searching after startup Celsius / Fahrenheit area selection
Static pressure selection
Priority selection for energy saving /effect Indoor ON / OFF simultaneous control Defrosting condition selection
Defrosting level

Introduction Begin to search indoor Stop searching indoor and lock the quantity Celsius area Fahrenheit area 30Pa 0Pa (default) Energy saving priority Effect priority (default) Every indoor unit can be controlled seperately (default) All the indoor units will simultaneous ON or OFF Not easy to frost area (default) Easy to frost area Ordinary (default) Strengthen (increase the defrosting time) Quiet running function is unavailable (default) Quiet running function is available

Note: Either the indoor unit quantity unlocked or the locked quantity is different with actual connecting number, the unit cannot running.

Heat pump (default)

Cooling only

OFF

4HP

ON

5HP

OFF

6HP

Single phase

3-phase

New communication protocol (default)

Old communication protocol

BM2-8 Start mode selection

OFF First on indoor unit priority

ON Last on indoor unit priority

Cooling priority, any one indoor unit

ON

OFF

runs in cooling mode, the outdoor unit will run in cooling mode, the indoor

units running in heating mode will stop

Heating priority, any one indoor unit

ON

ON

runs in heating mode, the outdoor unit will run in heating mode, the indoor

units running in cooling mode will stop.

If the BM2-2, BM2-3, BM2-4 and BM2-5 setting wrong, it will cause the “63” failure

Note: communication protocol between indoor and outdoor units The new communication protocol is faster than the old communication and its control content is more than the old one. The indoor PCB 0151800113, 0151800161, 0151800161B, 0151800161C, 0151800227, 0151800227A, 0151800244, 0151800244B, 0151800244BA, 0151800086A, 0010451751AF, 0151800141A, 0010451751AE and 151800141 are new communication protocol. The indoor PCB 0151800086 and 0010451181A are old communication protocol. Old communication protocol indoor PCB can’t connect with new communication protocol outdoor, so if this outdoor unit connect with old communication protocol indoor, need set the dip switch BM2-6 to ON position.
bridge instruction

CJ1: Short it before power ON– PCB check its function (used for factory production. Short it after power ON– time short function, 60 seconds become to 1 second. CJ2: Reserved

Monitor Tools

Main function instruction: By setting the rotary switch, the digital tube will display the outdoor and indoor unit parameters (the outdoor current, discharge temp., suction temp., defrosting temp., coil temp. and outdoor ambient temp.; indoor unit coil temp. and valve open angle and so on), the data is inform of decimal integer. During the process of installation, adjustion and maintenance, the whole system’s operating parameters can be tested conveniently which can help to check and solve problems quickly and correctly.

Digital tube display Display outdoor failure code (when unlock the indoor quantity and the system is running normally, display indoor quantity, outdoor horse power and type of power supply circularly) Display outdoor operation mode (stop: OFF, cooling: CCC, heating: HHH)
Program version (one decimal)
E2 version Target frequency of compressor, (press “start” for 5s to enter the manual frequency control, “Up / Down” can adjust the frequency, press “stop” for 5s to quit. Manual control, the frequency flashing display, otherwise display normally.) Actual frequency of compressor
Indoor quantity
Running indoor quantity
Outdoor unit horse power
Outdoor fan 1 speed (unit: rpm, max. display: 999)
Outdoor fan 2 speed (unit: rpm, max. display: 999) Target average temp. of indoor Tc2 (unit: Actual average temp. of indoor Tc2 (unit: Target degree of superheat of PMV in heating (unit: Outdoor special operation condition The first position: power supply type (0-1Ph; 1- 3Ph) The second position: quiet (0-OFF; 1-ON) The third position: gettering operation (0-OFF; 1-ON) Forced fan motor running, (press “start” for 5s to enter the manual fan motor control, “Up / Down” can adjust fan speed, press “stop” for 5s to quit) forced: flashing display “0-15”, otherwise display “FAN”. The outdoor failure can’t affect this function.

Digital tube display

Td discharging temperature (unit: Ta outdoor ambient temperature (unit: Ts suction temperature (unit: Te defrosting temperature (unit: Toil oil temperature (unit: Pd high pressure (unit: kg, one decimal) Ps low pressure (unit: kg, one decimal) Outdoor PMV valve open angle (unit: pls, max. display: 999) (Press start for 5s to enter forced mode, all the indoor units’ PMV are full open, flashing display “480” and press stop for 5s to quit and display outdoor PMV valve open angle) Valve state The first position: 4WV (0-OFF; 1-ON) The second position: SV1 (0-OFF; 1-ON) The third position: SV2 (0-OFF; 1-ON) The first position: high pressure switch (0-OFF; 1-ON) The second position: low pressure switch (0-OFF; 1-ON)

The third position: heater (0-OFF; 1-ON) Tfin module temperature (unit: Compressor current (unit: A, one decimal) Te defrosting temperature (unit: DC voltage of module (unit: V Outdoor CT current (unit: A, one decimal) Forced cooling alternate display “CCC”, (Press start for 5s, all the indoor units are in cooling state, and press stop for 5s to quit) Forced heating (Press start for 5s, all the indoor units are in heating state, and press stop for 5s to quit) display ” HHH”, otherwise “—” If the communication is normal display indoor program version (one decimal) ,otherwise “—” Indoor type (0,4,5,6,7 ordinary indoor unit; 1-high wall; 2-fresh air; 3-heat recovery) Display indoor failure code, if no failure display “—”

Indoor horse power (one decimal) The first and second position: indoor unit current operation mode (00-OFF, 01-Fan, 02-Cooling, 03-Dehumidify, 04-Heating) The third position: outdoor unit capacity demand (0-no ; 1-yes) Indoor PMV valve open angle (unit: pls, max. display: 999) Indoor unit The first position: float switch (0-OFF; 1-ON) The second position: pump (0-OFF; 1-ON) The third position: heater (0-OFF; 1-ON) Indoor Ta ambient temperature (unit:Indoor TC1 gas temperature (unit: Indoor TC2 liquid temperature (unit:

Outdoor Unit Control

Compressor startup control

After receiving the outdoor startup instruction, outdoor open SV1 30 seconds and then standby. When startup, the compressor will keep for 3 min at 45rps (when Ta<40°C) or 3 min at 40rps (when Ta>=40°C). In cooling mode, meet running 1min & (Td-CT)20°C or Ps0.1MPa (or max. running time is 3min),quite the startup control; In heating mode, meet running 1min and & (Td-CT)20°C or Ps0.1MPa (or max. running time is 3min), quite the startup control; During startup, the high pressure protection, high exhaust protection and current protection is priority and the low exhaust up frequency protection is shielded.

Compressor output control

Compressor Pd/Ps control, control the compressor frequency to output appropriate cooling/heating capacity.
The control at the end of the startup control.

cooling mode: According to the ambient temperature select target Ps automatically

Mode
Target Ps Target Ps (set by dip switch) Target Ps

Effect priority mode (default)
Setting value -R°C 0
Setting value +2°C

Energy-saving mode Setting value -R°C
2 Setting value +2°C

Outdoor ambient temperature Ta12°C
12°C<Ta<40°C
Ta40°C

R value setting: Ta<-5°C, Target Ps: setting value -8°C -5°CTa<12°C, Target Ps is the slope value of setting value and (setting value -8°C)

Ps correction during running During running: correct the Ps according to the compression ratio

2.2 In heating mode:
According to the piping length to select target Pd and also according to the ambient temperature select target Pd automatically

Mode
Target Pd Target Pd Target Pd (set by dip switch) Target Pd

Effect priority mode (default)
Setting value +3°C Setting value +2°C
48
Setting value -2°C

Energy-saving mode Setting value +3°C Setting value +2°C
46 Setting value -2°C

Outdoor ambient temperature Ta15°C Ta7°C
Ta-5°C
Ta<-5°C

Pd correction during running
During running: correct the Pd according to the compression ratio

3. Outdoor fan motor control
3.1 In cooling mode: Outdoor fan motor running control during cooling mode is in high COP and 100% RPM running as much as possible. Outdoor fan control in the operation of the refrigeration in the relation between high COP operation principle is to 100% as much as possible the RPM. Pd is the main control standard.

38

Pd(MPa) 1.0

A areaPd<1.0 MPa, drop step by step at the lowest fan speed (fan speed No.1 ) running 1 min , OFF

B area1.0MPaPd<1.5 MPa Reduce the speed per 1 class /20s until to the lowest 1.5
C area1.5MPaPd<2.2 MPa Keep the current fan speed 2.2
D area2.2MPaPd<3.2MPa Increase the speed per 1 class/20s 3.2 E areaPd3.2 MPa Reach the highest speed from the D area speed immediately
When startup the fan motor speed refer to the following: · Ta35°C: highest speed · 25°CTa<35°C: 6 speed · 15°CTa<25°C: 3 speed · Ta<15°C: OFF

3.2 In heating mode Pd(MPa)
3.8

A areaPd>3.8MPa, OFF immediately

B area3.5MPa<Pd3.8 MPa Reduce the speed per 1 class /20s until to the lowest 3.5
C area3.0MPa<Pd 3.5MPa Keep the current fan speed 3.0

D area2.4MPa<Pd 3.0MPa Increase the speed per 1 class/20s 2.4 E areaPd2.4 MPa Reach the highest speed from the D area speed immediately

All the heating start, after the 4-way valve reversing (including defrosting, oil return and 4-way valve is electrified) the fan motor speed refer to the following: · Ta15°C: highest speed · 15°C<Ta20°C: 3 speed · Ta>20°C: 1 speed

39

4. Defrosting control

In order to have the effect heating operation, need defrosting control.

4.1 Entering condition:

· &

Ta20°C

· OR

· OR

After heating startup 60min Last defrosting~ heating cumulative operation time is more than 60 minutes A: Ta6°C, Te-10°C For 5min continuously B: -15Ta<6°C, Te(5Ta-72)/7 For 5min continuously C: -23Ta<-15°C, Te(Ta-69)/4 For 5min continuously D: Tao<-23°C, Te-23°C For 5min continuously
X: During the oil return operation meets the following condition, the cumulative operation time reset
Outdoor Te10°C, for 1min continuously OR
Outdoor Te15°C, for 10min continuously

4.2 Defrosting control During defrosting, four-way valve power off, outdoor fan stop, indoor fan stop, outdoor PMV open to 470pls. 4.3 Quit defrosting

· OR

· After defrosting operation 10min

· OR

· Outdoor Te15°C, for 1min continuously · Outdoor Te20°C, for 30s continuously

· Outdoor Te30°C, for 5s continuously · OR · Tc 54°C

5. Oil return control
5.1 Entering condition:

A: In cooling mode

When load rate<20%: after 2 hours

The master unit compressor cumulative · OR

· &

operation time

Load rate30%

When load rate20%: after 4 hours

· &

After the outdoor unit startup

· OR

Load rate 30% · &
Finish the outdoor startup control~ after 20min

Note: load rate=indoor HP(Thermo ON) / indoor HP*100%

40

B: In heating mode

When load rate<25%: after 1 hours, 4-way valve doesn’t reversing oil return operation

· &

The master unit compressor cumulative · OR operation time

25%load rate<50%: after 2 hours, 4-way valve doesn’t reversing oil return operation

· & Load rate30%

50%load rate<75%: after 4 hours, 4-way valve

After the outdoor unit startup doesn’t reversing oil return operation

· OR

Load rate 30%

· &

Finish the outdoor unit startup control~after 20min

· &

Finish defrosting~ after 30min

Note: if load rate75% and the outdoor unit output rate75% for 10 min, oil return time reset

5.2 Oil return control 1) Oil return in cooling mode, the compressor according to the 75% of maximum frequency control, the outdoor PMV opening angle is 470 pls, the Thermo ON indoor PMV opening angle is 250 pls, the Thermo OFF indoor PMV opening angle is 125 pls. 2) Oil return in heating mode (4-way valve reversing), the compressor according to the 75% of maximum frequency control, the outdoor PMV opening angle is 470 pls, the Thermo ON and Thermo OFF indoor PMV opening angle is 125 pls. When Td > 95 °C ands TdSH > 15 °C, the indoor PMV opening angle increased 10%, max. time is 2; When Td < 90 °C, return to the usually opening. 3) Oil return in heating mode (4-way valve doesn’t reversing), the compressor according to the indoor units load rate and current running frequency to confirm the oil return enter frequency, the maximum frequency can’t exceed 75% of the maximum frequency. the PMV of the outdoor and the Thermo ON indoor unit control automatically, Thermo OFF indoor PMV opening angle is 250 pls.

5.3 Oil return quit condition: 1) In cooling mode

· OR

After 5min · OR

Td<CT+10°C, for 10s continuously

· & Ts-ET<15°C, for 10s continuously
After 1min

2. In heating mode (4-way valve reversing)

· OR

After 5min · OR

Td<CT+10°C, for 10s continuously

· & Ts-ET<15°C, for 10s continuously
After 2min

3. In heating mode (4-way valve doesn’t reversing)

· OR

After 5min

Td105°C, for 5s continuously

41

15. Failure code

Digital tube indication on master
unit

Indication on wired controller
(hex)

Failure code definition

Failure description

Remarks

Defrosting temp. sensor Te failure

Resumable

Suction temp. sensor Ts failure

Indoor communication

For continuous 300seconds, the searched indoor quantity is less than the set quantity.

Resumable

failure 1A

For continuous 300seconds, the searched indoor quantity is more than the set quantity.

1C

High pressure sensor Pd failure

Open circuit or short circuit for continuous 60seconds, alarm

1D

Low pressure sensor Ps failure

Resumable Resumable

1E

High pressure If disconnect for continuous 50ms, alarm. If alarm 3 times in an switch HPS failure hour, confirm the failure

Once
confirmation, un-resumable

21

Outdoor EEPROM failure

Outdoor EEPROM failure

Un-resumable

22

Discharging temp. too high protection (Td)

Td239°F(115°C), alarm; Td 185°F(85°C) resume. If it occurs 3 times in an hour, confirm the failure.

Once
confirmation, un-resumable

23

4-way valve reversing failure

After the compressor start for 10 minutes, 4-way valve can be

Once

met reversing pressure difference [6.0]kg, alarm, 3min resume,f it confirmation,

occurs 3 times in an hour, confirm the failure.

un-resumable

Low pressure 27 Ps too low
protection

(1) In cooling, Ps[0.5]kg or Ps[1.0]kg for continuous 5min, alarm. Ps [2.5]kg, resume (2) In heating, Ps[0.3]kg or Ps[0.5]kg for continuous 5min, alarm.Ps [2.0]kg, resume if it occurs 3 times in an hour, confirm the failure.

27

Compression ratio too high protection

Compression ratio [8.0] for continuous 5min or compression ratio [9.0] for continuous 1min, stop and alarm.3min later, resume automatically, if it occurs 3 times in an hour, confirm the failure.

Once

27

Compression ratio too low protection

Compression ratio [1.8] for continuous 5min or compression ratio [1.5] for continuous 1min, stop and alarm.3min later, resume automatically, if it occurs 3 times in an hour, confirm the failure.

confirmation, un-resumable

High pressure Pd[41.5]kg, or Pd[39]kg for continuous 5min, alarm and stop.

28 sensor Pd too high Pd[33]kg resume.if it occurs 3 times in an hour, confirm the

protection

failure.

Discharging temp. TdPd+[10] for continuous 5 minutes, the unit stops and alarms.

2B sensor Td too low when the oil temp. met the startup condition, resume.if it occurs 3

protection

times in an hour, confirm the failure.

42

Digital tube Indication

indication on wired

on master controller

unit

(hex)

Failure code definition

Failure description

46

2E

Communication with No communication for 30 seconds continuously, when inverter board failure communication is normal, resume

Remarks Resumable

Compressor frequency continuous operation after 1 minute,

53

35

CT current is too low or current sensor fault

compressor frequency 70Hz, current sensor for five minutes samples values less than 10, alarm. 3 minutes later recovery. If

Once
confirmation, unresumable

it occurs 3 times in an hour, confirm the failure.

Control board for Cannot receive the signal of control board for subcooling

54

36 subcooling valve valve in 200 continuous cycles or receive wrong data, recover Resumable

communication fault automatically when received right data.

Communication

failure between

57

39

control board for subcooling valve and PCB(sending

Communication failure between control board for subcooling valve and PCB

Resumable

by control board for

subcooling valve)

Tc1 temp sensor

of control board for

58

3A

subcooling valve Tc1 temp. sensor cannot connect with control board for failure (sending by subcooling valve

Resumable

control board for

subcooling valve)

Tc2 temp sensor of

Control board for

59

3B

subcooling valve Tc2 temp. sensor cannot connect with control board for failure (sending by subcooling valve

Resumable

control board for

subcooling valve)

Control board for

60

3C

subcooling valve failure (sending by

Reserved

Resumable

valve plate)

Control board for

subcooling valve

61

3D failure (sending by Reserved

Resumable

control board for

subcooling valve)

Control board for

subcooling valve

62

3E failure (sending by Reserved

control board for

Resumable

subcooling valve)

Control board for The dip switch setting there is no control board for subcooling

63

3F subcooling valve dip valve, but the control board for subcooling valve is detected.

Un-resumable

switch setting wrong

(please check the dip switch setting of BM2-2, BM2-3, BM2-4, BM2-5)

64

40

CT current is too high

CT current exceeds specified value for continuous 5s, 3 minutes after recovery, If it occurs 3 times in an hour, confirm the failure

Once
confirmation, unresumable

43

Digital tube Indication

indication on wired

on master controller

unit

(hex)

Failure code definition

Failure description

Remarks

71-0 71-1 75-0 75-4
78
81 82 83 108
109

47

Upper DC motor

failure

Running at speed below 20rpm for 40s, or running lower than

70% of target speed for 2 minutes, 3 minutes after recovery, If it

47

Lower DC motor failure

occurs 3 times in an hour, confirm the failure

4B

No pressure difference

Within 3 minutes after the compressor starts, if Pd-Ps [1.0] kg for continuous 1 minutes, alarm; it will recovery after 3 minutes. If it

Once
confirmation, unresumable

occurs 3 times in an hour, confirm the failure

4B

The pressure difference is too small

Pd-Ps [2.0] kg for continuous 5 minutes, alarm; it will recovery after 3 minutes. If it occurs 3 times in an hour, confirm the failure

4E

Compressor running in cooling mode, Ps[2.0]kg for continuous 30 minutes, alarm; Ps[3.0]bar for continuous 30min, recovery. Lack of refrigerant Compressor running in heating mode, Detect the outdoor EEV
open fully for continuous [60] minutes and suction superheat Ts –

Once confirmation, un-
resumable

Ps 20°C, alarm;Ps[2.0]bar for continuous 30min, recovery.

IPM modular 51 temp. too high
protection

IPM modular temp.[85]°C, alarm; IPM modular temp.[65]°C, recovery. If it occurs 3 times in an hour, confirm the failure

Once
confirmation, unresumable

52

Compressor

Compressor current exceeds specified value, 3 minutes after

current protection recovery, If it occurs 3 times in an hour, confirm the failure

Once
confirmation, unresumable

53

Outdoor model setting wrong

Model and dip swtich setting do not match

Un-resumable

Transient over

6C

current in IPM module rectifier

Transient over current in IPM module rectifier side software

side software

Current of IPM

6D

module rectifier side detection

Current of IPM module rectifier side detection circuit abnormal

circuit abnormal

3 times in an
hour, confirm failure; once
confirmation, unresumable

Over current of

110

6E IPM modular

IPM modular over current,

hardware

111

6F

Compressor control

out

of

In the course of compressor startup detect the rotor position, stop for 5s automatically.

or running, the unit can not and INV control board resume

112

70

Radiator of module temp. too high

When The temp. 94°C, alarm When The temp. < 94°C, INV control board resume automatically.

3 times in an
hour, confirm failure; once

113

71 Module overload Module overload

confirmation, unresumable

Voltage too low When power supply voltage < DC420V, alarm

114

72 of DC bus line of When power supply voltage > DC420V, INV control board resume

module

automatically.

Voltage too high When power supply voltage > DC642V, alarm

115

73 of DC bus line of When power supply voltage < DC642V, INV control board resume

module

automatically.

Communication

116

74

abnormal between module and

Communication

is

disconnected

control PCB

Resumable

44

Digital tube Indication

indication on wired

on master controller

unit

(hex)

Failure code definition

Failure description

Remarks

117

75

Module over current (software)

Module over current (software)

118

76

Compressor startup failure

Compressor continuously startup 5 times all failed.

3 times in an

119

77

Detecting circuit of transducer current is abnormal

Current detection sensor of inverter controller is abnormal or unconnected or connected wrongly.

hour, confirm failure; once
confirmation, un-resumable

Power supply of

120

78 inverter controller Power supply of inverter controller is broken down instantly

abnormal

Power supply of

3 times in an

121

79 inverter board is

Power supply of inverter controller is broken down instantly

hour, confirm

abnormal

failure; once

122

7A

Radiator temp.sensor Resistor of temp. sensor abnormal or temp. sensor of module abnormal disconnected

confirmation, un-resumable

123

Transient over

7B

current of IPM module rectifier side

Transient over current in IPM module rectifier side hardware

hardware

3 times in an hour, confirm failure; once confirmation, un-resumable

When there is no failure, if the starting condition can not be met, digital tube on master unit will display stand-by code: 555.1 Outdoor ambient temperature too high (heating)

Outdoor ambient temperature too high or too low (cooling)

Ta>27°C, Standby
Ta>54°C or Ta<-15°C, Standby
The oil temperature does not meet the system startup conditions

Resumable

Note: 1, The data in [ ] stores in EE 2, The PCB display failure method: A. Digital display board: if the fault is 26-0, then display [26] first, and then display [-0]. If is 555.0, the first display [555], and then display [. 0]. Failure code display is 1 second, failure display interval is 2 seconds. B. LED light: the red light LED1 on behalf of ten digits, green light LED3 on behalf of the unit digit. If it is 26-0, first LED1 flashes 2 times , then LED3 flashes 6 times. So circularly display. If is 111-1, first LED1 flashes 11times, then LED3 flashes 1 time, and then LED1 normally on the LED3 flashes 1 time at the same time. So circularly display. If is 555.0, the LED1 and LED3 normally on. If is 555.4, the LED1 and LED3 flash 4 times at the same time. So circularly display. Flash frequency of LED lights is 2Hz, interval time is 2 seconds.

Troubleshooting

[20-23] Temperature sensor failure

If sensor terminal is fixed well If sensor resistor /characteristic is proper Check if PCB is faulty, if yes, replace it

Reconnect Replace sensor

[122] Radiator temp. sensor of transducer abnormal No Check if connection between temp. sensor and inverter board Yes No Measure if temp. sensor resistor is normal Yes Replace inverter control board

Adjust connection Replace sensor

[26-0, 26-1, 26-2] Communication circuit between indoor and outdoor

If wiring between P and Q is wrong or broken down
No
If wire of on outdoor connecting board is normal
Yes
If the wire on indoor PCB is normal Yes
If indoor and outdoor are electrified at the same time
Yes
If communication wire is separate from high-voltage wire on layout
Yes
If indoor quantity is correct (check by rotary switch) No Electromagnetic interference
No
If failure disappears after changing indoor PCB No Check outdoor PCB, if faulty, replace it

Modify the communication wire Modify the port Connect power source Change communication wiring type Shut off power supply, and outdoor searches for indoors again Eliminate electromagnetic interference

[28, 29] High/low pressure sensor failure

No If sensor terminal is fixed well

Yes

If voltage between red terminal

No
and black terminal is 5V when testing pressure sensor by multimeter

Yes

If voltage between white terminal and black

Yes

terminal is 0.5V~3.5V when testing pressure sensor by multimeter

No

Replace connecting board

Reconnect Replace PCB Replace pressure sensor

High pressure switch failure

If connection between pressure switch and connecting board is
good Yes
If the system pressure meets the condition that pressure switch shuts off Yes
Make pressure switch close, measure if terminal is conductive by multimeter
Yes
If the system is clogged
No
Make pressure switch terminal on connecting board in short circuit, check if failure exists still No Replace pressure switch and measure again

No No No Yes Yes

Re-connect Replace pressure switch
Check the piping system Replace connecting board

Outdoor EEPROM failure

No If the EEPROM is fixed well
Yes Replace EEPROM

Reconnect

[34] Protection of discharging temp. too high

If sensor terminal is fixed

No

well

Yes

If sensor resistor

No

/characteristic is proper

Yes

If the system is

Yes

lack of refrigerant

No

Replace connecting board

Reconnect Replace sensor Charge refrigerant

50

[35] 4-way valve reversing failure
If connection between 4-way valve and connecting board is good
Yes
If system meets condition of 4-way valve reversing:
Pd-Ps>0.6MPa Yes
Measure if CN49 voltage on connecting board is 220VAC after 4-way valve reversing condition is met
Yes
If compressor running current is normal
Yes
If there is air noise after 4-way valve reverses, and if the temp. of connection pipes with 4-way valve is
normal No
Replace 4-way valve

No Re-connect
No Check if SV1 leaks
No Replace connecting board
No Check compressor

51

[39-0, 39-1] Low pressure too low and compression ratio too high

If actual pressure is in conformance with the measured data by sensor
Yes
Check if stop valve is open fully
Yes
Check if system is lack of refrigerant
No
Check if terminal of electronic expansion valve coil is fixed well
Yes
Check if piping system is clogged

No Replace pressure sensor

No Open stop valve
Yes Recharge refrigerant

No

Re-connect the terminals

Yes Clear the piping

[39-2] Compression ratio too low

If actual pressure is in conformance with the measured data by sensor
Yes
Check if compressor running current is normal
Yes
Check if 4-way valve is interconnected

No Replace pressure sensor

No

Check compressor

Yes Replace 4-way valve

52

[40] High pressure too high failure

If characteristic of high pressure sensors are normal
Yes
If stop valve opens fully
Yes
If in cooling outdoor fan motor
runs normally
Yes
If in heating indoor fan motor runs normally and if filter is clogged
No
Check if piping system is clogged

No Replace pressure sensor
No Open stop valve
No Check fan motor
Yes Check indoor
Yes Clear the piping

53

[43] Discharging temp. sensor Td too low protection

If the sensor characteristic

No

is correct

Yes

If the terminal of

No

sensor is fixed well

Yes

In cooling mode, when the

Yes

indoor unit off if the EEV can’t

completely close

No

Check if refrigerant

Yes

is too much

[46] Communication with inverter module failure

Replace the sensor Reconnect
Replace of adjustment the indoor unit EEV
Recharge refrigerant

Check if communication wire between connecting board and module is connected normally
Yes
In cooling mode, when the indoor unit off if the EEV
can’t completely close
No
Measure if voltage of CN28 on connecting board
changes by multimeter Yes
Replace module

No Re-connect
Yes Replace wire
No Replace connecting board

54

[53] CT Current too low or current sensor failure

Check if where between connecting board and CT

No

Re-connect

board is connected well (CN9)

Yes
Check if CT wire is conductive
Yes
Check if it is normal after replacing CT board Yes
CT board is broken down

No

Replace wire

No

Replace connecting board

55

[64] CT current too high

Check if wire between connecting board and module
is connected normally
Yes
Check if CT wire is conductive
Yes
If the temperature on top of fixed frequency compressor is too
high Yes

No Re-connect

No

Replace wire

No

If AC contactor

Yes

work

If there is air into the system No

Yes Recharge refrigerant

If normal after replacing CT
detector No
Replace PCB

If there is clogged, motor is bad

Yes Fix the system

No Replace compresso

[71-0,71-1 ] DC motor blocked

Rotate fan motor by hand to check if there
is obviously fiction
No
Check the motor and PCB connection is well
Yes
Forced the fan in low speed, measure if it has alternating voltage between FG and GND
Yes Replace the outdoor PCB

Yes

Replace fan motor

No Re-connect

No Replace the motor

57

[75-0, 75-4] Pressure difference between high pressure and low pressure is abnormal

Check if high/ low pressure sensor is connected well
Yes
Check if compressor wire is connected normally
Yes
If wire of inverter compressor are connected oppositely No
If 4-way valve is interconnected
No
Measure if there is voltage U, V, W of compressor by multimeter, and if it is normal
Yes Replace inverter compressor

No

Re-connect

No

Correct compressor wire

No

Correct compressor wire

Yes

Replace 4-way valve

No

Replace inverter module

Compressor current protection [108] Transient over current in IPM module rectifier side software [110] IPM module hardware over current [123] Transient over current in IPM module rectifier side hardware

Check if voltage of power supply in normal
Yes
Check if wire of electric box is correct and if compressor wire is fixed well Yes
If compressor is normal (compressor coil resistor insulation) Yes
If power module is normal
Yes
If there are the other failure recently, such as
Yes
Solve the failures due to relative information

No

Improver power supply circuit

No

Correct the wiring due to diagram

No

Replace compressor

No

Replace power module

No

Remove the failure

Compressor out of control [118] the compressor start failure Check if voltage of power supply is normal

No

Yes

Improve power supply circuit

Check the wires among U, V,

No

W of compressor are normal

Replace the wires

Yes

If compressor is normal

No

(compressor coil resistor, insulation)

Replace the compressor

Yes
Compressor load too much, check the reason
[112] Radiator temp. of transducer too high; [81] IPM module temp. too high;

Check the temperature sensor characteristic is correct Yes
Check the radiator is blocked
Yes

No

Replace the sensor

Yes Clean the radiator

If screw of module is fixed well, and if

No

radiating silica gel is daubed enough

and evenly, if there is no dirt on radiator

Yes Improve the running environment of outdoor unit
60

Fix it well and daub gel again, clean the radiator

[113] Protection of overload

No Check if voltage of power supply is normal

Improve power supply circuit

Yes Check if wire of electric box is correct

No Correct the wiring due to diagram

Yes

If compressor is normal

No

(compressor coil resistor, insulation)

Yes

If power module is normal

No

Yes
Compress load too much, check the reason
[114] Voltage too low of DC bus line of transducer

Replace compressor Replace power module

Check if voltage of power supply is normal
Yes
Check if wire of electric box is correct Yes
If AC contactor or relay acts well
Yes
Measure if DC bus line voltage between P and N of module is less than 375V Yes Check rectifier, reactor, electrolytic capacitor in inverter main circuit

No

Improve power supply circuit

No Correct the wiring due to diagram
No Adjust or replace relay

NoCircuit of DC bus line voltage on inverter control board abnormal, replace inverter control board

Voltage too high of DC bus line of transducer

Check if voltage of power supply is normal Yes
Check if wire of electric box is correct

No Improve power supply circuit
No Correct the wiring due to diagram

Yes

Measure if DC bus line voltage between P and N of module is over 644V
Yes

No

Circuit of DC bus line voltage on inverter control board abnormal, replace inverter control board Check rectifier, reactor, electrolytic capacitor in inverter main circuit

Communication abnormal between transducer (inverter module board) and control PCB

Check if wire between control PCB and

Yes

inverter board is abnormal Adjust communication wire

No

Check if communication circuit of

Yes

main control PCB is abnormal (if signal LED flashes abnormally)

No

Replace main control board

If inverter module board is abnormal No Solve the failures due to relative information

Yes

Detecting circuit on inverter board broken down, replace inverter module board

Transducer over current (software protection)

Check voltage of power supply is normal

No

Yes No
Check if wire of electric box is correct

Yes

If compressor is normal

No

(compressor coil resistor, insulation)

Yes No
If power module is normal
Yes
Compressor load too much, check the reason

Current detection circuit of transducer is abnormal

Improve power supply circuit Correct the wiring due to diagram
Replace compressor Replace power module

Check if wire between DCCT and control board wire between IPM and compressor are correct; if wiring direction of DCCT is normal
Yes
Check if current sensor is normal
Yes
Replace inverter PCB

No

Correct the wiring due to diagram

No

Replace current sensor

Power supply of transducer abnormal

Check if voltage of power supply is normal No

Yes

Check if wire of electric box is correct

No

Yes

If relay or AC contactor acts well

No

Yes

Measure if DC bus line voltage between P and N on

No

module is less than 140V

Yes
Check rectifier, reactor, electrolytic capacitor in
inverter main circuit
[121] Power supply of inverter board is abnormal

Improve power supply circuit
Correct the wiring due to diagram
Adjust or replace relay or AC contactor
DC bus line voltage circuit on inverter board broken down, replace inverter module board

Check if voltage of power supply

No

on inverter control board is normal

Yes

Check if wire between control PCB

Yes

and inverter board is abnormal

Yes

If circuit of inverter control board is abnormal Yes

No

Solve the failures due to relative information

Improve power supply circuit Adjust communication wire
Replace power module

Radiator temp. sensor of transducer abnormal

Check if connection between

No

temp. sensor and inverter board

Yes No
Measure if temp. sensor resistor is normal Yes
Replace inverter control board

Adjust connection Replace sensor

Appendix I: Sensor Resistance Table

Code 0010450192 0010450194 0010451303 0010451307

Resistance 10K 10K 50K 10K Description Outdoor ambient temp. sensor Defrosting temp. sensor Discharging temp. sensor Suction temp. sensor

WARNING: The design and specifications are subject to change without prior notice for product improvement. Consult with the sales agency or manufacturer for details.
AIRWELL RESIDENTIAL SAS 10,Rue du Fort de Saint Cyr, 78180 Montigny le Bretonneux www.airwell.com
22.AW.VVFA.125-150.R410A.SM.EN.05.03.Rev01

References

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