Haier Ductless

View by Series
HaierDuctless.com
Email Support

FlextFit Series

Back

Flex Fit Single Zone

Flex Fit Multi Zone

Arctic Series

Back

Ceiling Cassette

Back

Easy Series

Back

FlexFit Highwall

Back

FlexFit Multi Outdoor

Back

FlexFit Single Outdoor

Back

Forward Series

Back

Novel Series

Back

Slim Duct

Back

YR-E16b Wired Controller

Back

YR-E17 Wired Controller

Back

Wireless Remote

Back

Highwall Error Codes

Back Home

Tempo Error Codes

Back Home

Tempo Error Codes

Back Home

★■■

Back Home

Room temperature sensor failure

Go to Flowchart

★□□

Back Home

Heat-exchange sensor failure

★□★

Back Home

Indoor EEPROM error

■■★

Back Home

Communication fault between indoor and outdoor units

Go to Flowchart

■□★

Back Home

Indoor fan motor malfunction

□★★

Back Home

The protection of IPM

■★□

Back Home

Overcurrent of the compressor

■★■

Back Home

Communication fault between the IPM and outdoor PCB

Go to Flowchart

■★■

Back Home

Overheat protection for Discharge temperature

□★■

Back Home

Ambient temperature sensor failure

■★■

Back Home

Suction temperature sensor failure

Go to Flowchart

■★■

Back Home

deviate from the normal for the compressor

Go to Flowchart

■★■

Back Home

Outdoor EEPROM error

Go to Flowchart

■★□

Back Home

Power voltage is too high or low

□□★

Back Home

Defrost temperature sensor failure

★★■

Back Home

Overcurrent protection of AC electricity for the outdoor model

■★□

Back Home

Overcurrent protection for single-phase compressor

★□■

Back Home

Discharge temperature sensor failure

■★■

Back Home

Loop of the station detect error

Tempo Error Codes

Back Home

1

Back Home

Outdoor EEPROM error

Go to Flowchart

2

Back Home

The protection of IPM

3

Back Home

Overcurrent protection of AC electricity for the outdoor model

4

Back Home

Communication fault between the IPM and outdoor PCB

Go to Flowchart

6

Back Home

Power voltage is too high or low

8

Back Home

Overheat protection for Discharge temperature

10

Back Home

Defrost temperature sensor failure

11

Back Home

Suction temperature sensor failure

Go to Flowchart

12

Back Home

Ambient temperature sensor failure

13

Back Home

Discharge temperature sensor failure

15

Back Home

Communication fault between indoor and outdoor units

Go to Flowchart

18

Back Home

deviate from the normal for the compressor

Go to Flowchart

19

Back Home

Loop of the station detect error

24

Back Home

Overcurrent of the compressor

25

Back Home

Overcurrent protection for single-phase compressor

E1

Back Home

Room temperature sensor failure

Go to Flowchart

E2

Back Home

Heat-exchange sensor failure

E4

Back Home

Indoor EEPROM error

E7

Back Home

Communication fault between indoor and outdoor units

Go to Flowchart

E14

Back Home

Indoor fan motor malfunction

F1

Back Home

The protection of IPM

F2

Back Home

Overcurrent of the compressor

F3

Back Home

Communication fault between the IPM and outdoor PCB

Go to Flowchart

F4

Back Home

Overheat protection for Discharge temperature

F6

Back Home

Ambient temperature sensor failure

F7

Back Home

Suction temperature sensor failure

Go to Flowchart

F11

Back Home

deviate from the normal for the compressor

Go to Flowchart

F12

Back Home

Outdoor EEPROM error

Go to Flowchart

F19

Back Home

Power voltage is too high or low

F21

Back Home

Defrost temperature sensor failure

F22

Back Home

Overcurrent protection of AC electricity for the outdoor model

F23

Back Home

Overcurrent protection for single-phase compressor

F25

Back Home

Discharge temperature sensor failure

F28

Back Home

Loop of the station detect error

E1

Back Home

Indoor ambient temp sensor fault

Go to Flowchart

E2

Back Home

Indoor pipe temp sensor fault

E4

Back Home

Indoor PCB EEPROM fault

E5

Back Home

Indoor frozen / Indoor anti-frosting protection

Go to Flowchart

E7

Back Home

Communication fault between indoor and outdoor unit

Go to Flowchart

E9

Back Home

Indoor thermal overload / Indoor unit overload protection

E14

Back Home

Indoor motor feedback circuit fault

F1

Back Home

Outdoor IPM fault

F2

Back Home

Compressor start failure

F3

Back Home

Communication fault between outdoor PCB and power module

Go to Flowchart

F4

Back Home

Compressor Exhaust temp overtop protection

F5

Back Home

Module thermal overload

Go to Flowchart

F6

Back Home

Outdoor Ambient sensor fault

F7

Back Home

Outdoor Suction sensor fault

Go to Flowchart

F8

Back Home

Outdoor DC fan motor fault

Go to Flowchart

F9

Back Home

MCU reset

F10

Back Home

Malfunction of liquid pipe temp. sensor for indoor unit A

F11

Back Home

Loss of synchronism detection (compressor)

Go to Flowchart

F12

Back Home

Outdoor PCB EEPROM fault

Go to Flowchart

F13

Back Home

Lack of refrigerant or discharging

Go to Flowchart

F14

Back Home

Four-way-valve couldn't shift normally

F15

Back Home

Terminal block temp too high

F16

Back Home

Malfunction of liquid pipe temp. sensor for indoor unit B

F17

Back Home

Malfunction of liquid pipe temp. sensor for indoor unit C

F18

Back Home

Malfunction of liquid pipe temp. sensor for indoor unit D

F19

Back Home

Unreliable utility power input

F20

Back Home

Compressor overload protection

F21

Back Home

Outdoor Defrost sensor fault

F22

Back Home

Outdoor Alternating current over current protection

F23

Back Home

Module input overcurrent

F24

Back Home

Module current detect circuit malfunction

F25

Back Home

Outdoor Exhaust sensor fault

F26

Back Home

Malfunction of gas pipe temp. sensor for indoor unit E

F27

Back Home

Compressor blocked or instantaneous stop

F28

Back Home

Position detection circuit fault of compressor

F29

Back Home

Malfunction of gas pipe temp. sensor for indoor unit A

F30

Back Home

Outdoor Suction temp overtop / Malfunction of gas pipe temp. sensor for indoor unit B

F31

Back Home

Malfunction of gas pipe temp. sensor for indoor unit C

F32

Back Home

Malfunction of gas pipe temp. sensor for indoor unit D

F33

Back Home

Malfunction of liquid pipe temp. sensor for indoor unit E

F34

Back Home

Outdoor pipe temp protection in cooling mode

F35

Back Home

Malfunction of module temp.sensor / Momentary power failure detection

F36

Back Home

Malfunction of condensing temp. sensor

F38

Back Home

Malfunction of Toci temp. sensor

F39

Back Home

System high pressure switch off

Go to Flowchart

F40

Back Home

System low pressure switch off

Go to Flowchart

F41

Back Home

System high pressure protection / Refrigerant overabundance / High condensing temp. / malfunction of fan motor.

F42

Back Home

System low pressure protection / Refrigerant shortage / Low defrosting temp. / malfunction of fan motor.

F43

Back Home

Wrong match between indoor unit and outdoor unit

Single Zone FlexFit Outdoor

Back

1 LED Flash

Back

Outdoor PCB EEPROM fault

2 LED Flashes

Back

Outdoor IPM fault

3 LED Flashes

Back

Outdoor Alternating current over current protection

4 LED Flashes

Back

Communication fault between outdoor PCB and power module

5 LED Flashes

Back

Compressor overload protection

6 LED Flashes

Back

Unreliable utility power input

7 LED Flashes

Back

Compressor blocked or instantaneous stop

8 LED Flashes

Back

Compressor Exhaust temp overtop protection

9 LED Flashes

Back

Outdoor DC fan motor fault

10 LED Flashes

Back

Outdoor Defrost sensor fault

11 LED Flashes

Back

Outdoor Suction sensor fault

12 LED Flashes

Back

Outdoor Ambient sensor fault

13 LED Flashes

Back

Outdoor Exhaust sensor fault

14 LED Flashes

Back

Outdoor Suction temp overtop

15 LED Flashes

Back

Communication fault between indoor and outdoor unit

16 LED Flashes

Back

Lack of refrigerant or discharging

17 LED Flashes

Back

Four-way-valve couldn't shift normally

18 LED Flashes

Back

Loss of synchronism detection (compressor)

19 LED Flashes

Back

Position detection circuit fault of compressor

20 LED Flashes

Back

Terminal block temp too high

21 LED Flashes

Back

Indoor unit overload protection

22 LED Flashes

Back

Indoor anti-frosting protection

24 LED Flashes

Back

Compressor start failure

25 LED Flashes

Back

Module input overcurrent

37 LED Flashes

Back

Outdoor pipe temp protection in cooling mode

46 LED Flashes

Back

Wrong match between indoor unit and outdoor unit

Multi Zone FlexFit Outdoor

Back

LED Disp. 1

Back

Outdoor PCB EEPROM fault

LED Disp. 2

Back

Outdoor IPM fault

LED Disp. 4

Back

Communication fault between outdoor PCB and power module

LED Disp. 5

Back

Compressor overload protection

LED Disp. 6

Back

Unreliable utility power input

LED Disp. 8

Back

Compressor Exhaust temp overtop protection

LED Disp. 9

Back

Outdoor DC fan motor fault

LED Disp. 10

Back

Outdoor Defrost sensor fault

LED Disp. 11

Back

Outdoor Suction sensor fault

LED Disp. 12

Back

Outdoor Ambient sensor fault

LED Disp. 13

Back

Outdoor Exhaust sensor fault

LED Disp. 15

Back

Communication fault between indoor and outdoor unit

LED Disp. 16

Back

Lack of refrigerant or discharging

LED Disp. 17

Back

Four-way-valve couldn't shift normally

LED Disp. 18

Back

Loss of synchronism detection (compressor)

LED Disp. 20

Back

Indoor thermal overload

LED Disp. 21

Back

Indoor frosted

LED Disp. 23

Back

Module thermal overload

LED Disp. 24

Back

Compressor start failure

LED Disp. 25

Back

Module input overcurrent

LED Disp. 26

Back

MCU reset

LED Disp. 27

Back

Module current detect circuit malfunction

LED Disp. 28

Back

Malfunction of liquid pipe temp. sensor for indoor unit A

LED Disp. 29

Back

Malfunction of liquid pipe temp. sensor for indoor unit B

LED Disp. 30

Back

Malfunction of liquid pipe temp. sensor for indoor unit C

LED Disp. 31

Back

Malfunction of liquid pipe temp. sensor for indoor unit D

LED Disp. 32

Back

Malfunction of gas pipe temp. sensor for indoor unit A

LED Disp. 33

Back

Malfunction of gas pipe temp. sensor for indoor unit B

LED Disp. 34

Back

Malfunction of gas pipe temp. sensor for indoor unit C

LED Disp. 35

Back

Malfunction of gas pipe temp. sensor for indoor unit D

LED Disp. 36

Back

Malfunction of gas pipe temp. sensor for indoor unit E

LED Disp. 38

Back

Malfunction of module temp.sensor Momentary power failure detection

LED Disp. 39

Back

Malfunction of condensing temp. sensor

LED Disp. 40

Back

Malfunction of liquid pipe temp. sensor for indoor unit E

LED Disp. 41

Back

Malfunction of ‘Toci’temp. sensor

LED Disp. 42

Back

System high pressure switch off

LED Disp. 43

Back

System low pressure switch off

LED Disp. 44

Back

System high pressure protection.Refrigerant overabundance, High condensing temp. or malfunction of fan motor.

LED Disp. 45

Back

System low pressure protection.Refrigerant shortage, Low defrosting temp., or malfunction of fan motor.

Single and 2 Zone Multi 2U18 FlexFit Outdoor

Back

LED Disp. 1

Back

Outdoor PCB EEPROM fault

LED Disp. 2

Back

Outdoor IPM fault

LED Disp. 3

Back

Outdoor Alternating current over current protection / Outdoor current protection

LED Disp. 4

Back

Communication fault between outdoor PCB and power module

LED Disp. 5

Back

Compressor overload protection

LED Disp. 6

Back

Unstable utility power input

LED Disp. 7

Back

Compressor blocked or instantaneous stop

LED Disp. 8

Back

Compressor Exhaust temp overtop protection

LED Disp. 9

Back

Outdoor DC fan motor fault

LED Disp. 10

Back

Outdoor Defrost sensor fault

LED Disp. 11

Back

Outdoor Suction sensor fault

LED Disp. 12

Back

Outdoor Ambient sensor fault

LED Disp. 13

Back

Outdoor Exhaust sensor fault

LED Disp. 14

Back

Outdoor Suction temp overtop

LED Disp. 15

Back

Communication fault between indoor and outdoor unit

LED Disp. 16

Back

Lack of refrigerant or discharging / Low refrigerant

LED Disp. 17

Back

Four-way-valve couldn't shift normally / failure

LED Disp. 18

Back

Loss of synchronism detection (compressor)

LED Disp. 19

Back

Position detection circuit fault of compressor

LED Disp. 20

Back

Terminal block temp too high

LED Disp. 21

Back

Indoor unit overload protection

LED Disp. 22

Back

Indoor anti-frosting protection

LED Disp. 24

Back

Compressor start failure

LED Disp. 25

Back

Module input voltage overcurrent

LED Disp. 37

Back

Outdoor pipe temp protection in cooling mode

LED Disp. 46

Back

Wrong match between indoor unit and outdoor unit

Cassette Error Codes

Back

2Y/1G

Back

Outdoor PCB EEPROM fault

2Y/2G

Back

Outdoor IPM fault

2Y/3G

Back

Outdoor Alternating current over current protection

2Y/4G

Back

Communication fault between outdoor PCB and power module

2Y/5G

Back

Compressor overload protection

2Y/6G

Back

Unreliable utility power input

2Y/7G

Back

Compressor blocked or instantaneous stop

2Y/8G

Back

Compressor Exhaust temp overtop protection

2Y/9G

Back

Outdoor DC fan motor fault

3Y/0G

Back

Outdoor Defrost sensor fault

3Y/1G

Back

Outdoor Suction sensor fault

3Y/2G

Back

Outdoor Ambient sensor fault

3Y/3G

Back

Outdoor Exhaust sensor fault

3Y/4G

Back

Outdoor Suction temp overtop

3Y/5G

Back

Communication fault between indoor and outdoor unit

3Y/6G

Back

Lack of refrigerant or discharging

3Y/7G

Back

Four-way-valve couldn't shift normally

3Y/8G

Back

Loss of synchronism detection (compressor)

3Y/9G

Back

Position detection circuit fault of compressor

4Y/0G

Back

Terminal block temp too high or
Indoor thermal overload

4Y/1G

Back

Indoor unit overload protection or
Indoor frosted

4Y/2G

Back

Indoor anti-frosting protection

4Y/3G

Back

Module thermal overload

4Y/4G

Back

Compressor start failure

4Y/5G

Back

Module input overcurrent

4Y/6G

Back

MCU reset

4Y/7G

Back

Module current detect circuit malfunction

4Y/8G

Back

Malfunction of liquid pipe temp. sensor for indoor unit A

4Y/9G

Back

Malfunction of liquid pipe temp. sensor for indoor unit B

5Y/0G

Back

Malfunction of liquid pipe temp. sensor for indoor unit C

5Y/1G

Back

Malfunction of liquid pipe temp. sensor for indoor unit D

5Y/2G

Back

Malfunction of gas pipe temp. sensor for indoor unit A

5Y/3G

Back

Malfunction of gas pipe temp. sensor for indoor unit B

5Y/4G

Back

Malfunction of gas pipe temp. sensor for indoor unit C

5Y/5G

Back

Malfunction of gas pipe temp. sensor for indoor unit D

5Y/6G

Back

Malfunction of gas pipe temp. sensor for indoor unit E

5Y/7G

Back

Outdoor pipe temp protection in cooling mode

5Y/8G

Back

Malfunction of module temp.sensor / Momentary power failure detection

5Y/9G

Back

Malfunction of condensing temp. sensor

6Y/0G

Back

Malfunction of liquid pipe temp. sensor for indoor unit E

6Y/1G

Back

Malfunction of ‘Toci’temp. sensor

6Y/2G

Back

System high pressure switch off

6Y/3G

Back

System low pressure switch off

6Y/4G

Back

System high pressure protection.Refrigerant overabundance / High condensing temp. or malfunction of fan motor.

6Y/5G

Back

System low pressure protection.Refrigerant shortage / Low defrosting temp., or malfunction of fan motor.

6Y/6G

Back

Wrong match between indoor unit and outdoor unit

Wired Hex Disp.

Back

15

Back

Outdoor PCB EEPROM fault

16

Back

Outdoor IPM fault

17

Back

Outdoor Alternating current over current protection

18

Back

Communication fault between outdoor PCB and power module

19

Back

Compressor overload protection

1A

Back

Unreliable utility power input

1B

Back

Compressor blocked or instantaneous stop

1C

Back

Compressor Exhaust temp overtop protection

1D

Back

Outdoor DC fan motor fault

1E

Back

Outdoor Defrost sensor fault

1F

Back

Outdoor Suction sensor fault

20

Back

Outdoor Ambient sensor fault

21

Back

Outdoor Exhaust sensor fault

22

Back

Outdoor Suction temp overtop

23

Back

Communication fault between indoor and outdoor unit

24

Back

Lack of refrigerant or discharging

25

Back

Four-way-valve couldn't shift normally

26

Back

Loss of synchronism detection (compressor)

27

Back

Position detection circuit fault of compressor

28

Back

Terminal block temp too high

28

Back

Indoor thermal overload

29

Back

Indoor frosted / Indoor unit overload protection

29

Back

Indoor frosted / Indoor unit overload protection

2A

Back

Indoor anti-frosting protection

2B

Back

Module thermal overload

2C

Back

Compressor start failure

2D

Back

Module input overcurrent

2E

Back

MCU reset

2F

Back

Module current detect circuit malfunction

30

Back

Malfunction of liquid pipe temp. sensor for indoor unit A

31

Back

Malfunction of liquid pipe temp. sensor for indoor unit B

32

Back

Malfunction of liquid pipe temp. sensor for indoor unit C

33

Back

Malfunction of liquid pipe temp. sensor for indoor unit D

34

Back

Malfunction of gas pipe temp. sensor for indoor unit A

35

Back

Malfunction of gas pipe temp. sensor for indoor unit B

36

Back

Malfunction of gas pipe temp. sensor for indoor unit C

37

Back

Malfunction of gas pipe temp. sensor for indoor unit D

38

Back

Malfunction of gas pipe temp. sensor for indoor unit E

39

Back

Outdoor pipe temp protection in cooling mode

3A

Back

Malfunction of module temp.sensor / Momentary power failure detection

3B

Back

Malfunction of condensing temp. sensor

3C

Back

Malfunction of liquid pipe temp. sensor for indoor unit E

3D

Back

Malfunction of ‘Toci’temp. sensor

3E

Back

System high pressure switch off

3F

Back

System low pressure switch off

40

Back

System high pressure protection.Refrigerant overabundance / High condensing temp. or malfunction of fan motor.

41

Back

System low pressure protection.Refrigerant shortage / Low defrosting temp., or malfunction of fan motor.

42

Back

Wrong match between indoor unit and outdoor unit

Tempo Series

Back Home

Common Errors

Back Home

E1

Back Home

Indoor pipe temp sensor fault

Is the sensor properly plugged onto board?

Yes No

View as PDF

E1

Back Home

Indoor pipe temp sensor fault

Unplug sensor. Is it reading properly? 11KΩ @ 72°F 30KΩ @ 32°F

Yes Back No

E1

Back Home

Indoor pipe temp sensor fault

Are the pins on the board and the sensor connector free of corrosion or defect?

Yes Back No

E1

Back Home

Indoor pipe temp sensor fault

Replace board.

Back

E1

Back Home

Indoor pipe temp sensor fault

Fix connection.

Back

E1

Back Home

Indoor pipe temp sensor fault

Replace sensor.

Back

E1

Back Home

Indoor pipe temp sensor fault

Rehab the connector if possible. Replace sensor and/or board if needed.

Back

E5

Back Home

Frosted indoor coil

Is the indoor coil sensor in place?

Yes No

View as PDF

E5

Back Home

Frosted indoor coil

Is the coil sensor reading properly? Unplug off board. 11KΩ @ 72°F 30KΩ @ 32°F

Yes Back No

E5

Back Home

Frosted indoor coil

Is air flowing properly? If unit is ducted is the duct designed per design spec?

Yes Back No

E5

Back Home

Frosted indoor coil

Does the system have a refrigerant leak?

Yes Back No

E5

Back Home

Frosted indoor coil

Repair and recharge system.

Back

E5

Back Home

Frosted indoor coil

Adjust or replace EEV coil.

Back

E5

Back Home

Frosted indoor coil

Is the unit oversized for the room?

Yes Back No

E5

Back Home

Frosted indoor coil

Downsize unit.

Back

E5

Back Home

Frosted indoor coil

Fix placement.

Back

E5

Back Home

Frosted indoor coil

Replace sensor.

Back

E5

Back Home

Frosted indoor coil

Unblock or adjust air flow.

Back

E5

Back Home

Frosted indoor coil

Is EEV coil out of position or have an open coil? Read 46Ω Red->Violet Red->Yellow Red->Orange Red->Blue

Yes Back No

E5

Back Home

Frosted indoor coil

Is indoor ambient air sensor reading properly? 11KΩ @ 72°F 30KΩ @ 32°F

Yes Back No

E5

Back Home

Frosted indoor coil

Replace ambient sensor.

Back

E5

Back Home

Frosted indoor coil

Replace indoor PCB.

Back

E7

Back Home

Communication failure.

The connecting wiring between the outdoor and indoor units should be 14-4 (14 gauge 4 conductor) SOOW cable. It is recommended that the wire connections be made with spade terminals. If spade terminals are not used then the wires should not be twisted prior to connecting to the screw terminals. All strands of the wires need to be tightened to the terminal with no fraying. The cable should be secured with the strain relief clamp.

Next

View as PDF

E7

Back Home

Communication failure.

Disconnect power to outdoor unit for 10 minutes. Does issue return after 3 minutes?

Yes Back No

E7

Back Home

Communication failure.

Is the LED on the outdoor PCB flashing?

Yes Back No

E7

Back Home

Communication failure.

Is the LED on the indoor PCB flashing?

Yes Back No

E7

Back Home

Communication failure.

Check wires and wire connections.

Back

E7

Back Home

Communication failure.

Check wires and wire connections.

Back

E7

Back Home

Communication failure.

Replace outdoor PCB

Back

E7

Back Home

Communication failure.

Replace outdoor PCB

Back

F3

Back Home

Outdoor internal communication error

This error occurs when the outdoor PCB looses communication with the Inverter Power module (IPM).

Next

View as PDF

F3

Back Home

Outdoor internal communication error

Is the communication wire connected properly onto CN11 on IPM board and CN24 on PCB?

Yes Back No

F3

Back Home

Outdoor internal communication error

Is the low volt wire connected properly onto CN10 on IPM board and CN23 on PCB?

Yes Back No

F3

Back Home

Outdoor internal communication error

Unplug CN10 on IPM. Is there 5VDC on wires at pins 1-2 and 15VDC on wires at pins 2-3?

Yes Back No

F3

Back Home

Outdoor internal communication error

Replace IPM.

Back

F3

Back Home

Outdoor internal communication error

Fix connection.

Back

F3

Back Home

Outdoor internal communication error

Fix connection.

Back

F3

Back Home

Outdoor internal communication error

Replace PCB

Back

F5

Back Home

Inverter power module (IPM) over current

Is supply voltage correct? Are the wire connections to IPM and compressor correct per wire diagram? Is the insulation of the wires good?

Yes No

View as PDF

F5

Back Home

Inverter power module (IPM) over current

Are the compressor windings shorted/grounded?

Yes Back No

F5

Back Home

Inverter power module (IPM) over current

Replace compressor.

Back

F5

Back Home

Inverter power module (IPM) over current

Correct the wiring.

Back

F5

Back Home

Inverter power module (IPM) over current

Replace IPM.

Back

F7

Back Home

Outdoor Suction Sensor Fault

Is the sensor properly plugged onto board?

Yes No

View as PDF

F7

Back Home

Outdoor Suction Sensor Fault

Unplug sensor. Is it reading properly? 11KΩ @ 72°F 30KΩ @ 32°F

Yes Back No

F7

Back Home

Outdoor Suction Sensor Fault

Are the pins on the board and the sensor connector free of corrosion or defect?

Yes Back No

F7

Back Home

Outdoor Suction Sensor Fault

Replace board.

Back

F7

Back Home

Outdoor Suction Sensor Fault

Fix connection.

Back

F7

Back Home

Outdoor Suction Sensor Fault

Replace sensor.

Back

F7

Back Home

Outdoor Suction Sensor Fault

Rehab the connector if possible. Replace sensor and/or board if needed.

Back

F8

Back Home

Outdoor Fan Motor Fault

Power off the unit and gain access to outdoor PCB. Locate the fan motor wires on board, don’t unplug. Use meter to check for voltage.

Ok

View as PDF

F8

Back Home

Outdoor Fan Motor Fault

Are the following volts present when power is turned on? Black to Red ~ 300VDC Black to White ~ 15VDC

Yes Back No

F8

Back Home

Outdoor Fan Motor Fault

After about 3 minutes, volts here? Black to Yellow ~ 1-4VDC

Yes Back No

F8

Back Home

Outdoor Fan Motor Fault

Is the fan running?

Yes Back No

F8

Back Home

Outdoor Fan Motor Fault

Volts here? Black to Blue ~ 8VAC

Yes Back No

F8

Back Home

Outdoor Fan Motor Fault

Replace PCB

Back

F8

Back Home

Outdoor Fan Motor Fault

Replace PCB

Back

F8

Back Home

Outdoor Fan Motor Fault

Replace PCB

Back

F8

Back Home

Outdoor Fan Motor Fault

Replace fan motor

Back

F8

Back Home

Outdoor Fan Motor Fault

Replace fan motor

Back

F11

Back Home

Loss of Compressor Synchronization

Locate and note the wire colors on the U,V,W terminals of the Inverter Board. 3U24/4U36: U–Red V–White W–Black. Single zone units: U–Black V–White W–Red

Ok

View as PDF

F11

Back Home

Loss of Compressor Synchronization

Are the wires on the correct terminals?

Yes Back No

F11

Back Home

Loss of Compressor Synchronization

Unplug wires off board. Do all 3 wires ohm properly? Red & White = Red & Black = Black & White?

Yes Back No

F11

Back Home

Loss of Compressor Synchronization

Does each wire ohm open to ground?

Yes Back No

F11

Back Home

Loss of Compressor Synchronization

Call Tech Line 866-814-3633 option 3

Back

F11

Back Home

Loss of Compressor Synchronization

Fix according to above note.

Back

F11

Back Home

Loss of Compressor Synchronization

Replace compressor

Back

F11

Back Home

Loss of Compressor Synchronization

Replace compressor

Back

F12

Back Home

Outdoor EEPROM failure

Disconnect power, wait 10 minutes and power back on. Does error return?

Yes No

View as PDF

F12

Back Home

Outdoor EEPROM failure

Replace outdoor main board.

Back

F12

Back Home

Outdoor EEPROM failure

Take no further action.

Back

F13

Back Home

Lack of Refrigerant

Error in heat or cool?

Heat Cool

View as PDF

F13

Back Home

Lack of Refrigerant

Is compressor amp draw between 0.6-1.6 Amps when both of the following is correct? *ID coil temp minus ID ambient ≤41°F *Both ID & OD ambient temps are between 44~73°F

Yes Back No

F13

Back Home

Lack of Refrigerant

Is compressor amp draw between 0.6-1.6 Amps when both of the following is correct? *ID ambient minus ID coil temp ≤39°F *Both ID & OD ambient temps ≥77°F

Yes Back No

F13

Back Home

Lack of Refrigerant

Find and repair leak

Back

F13

Back Home

Lack of Refrigerant

Unplug each sensor. Is it reading properly? 11KΩ @ 72°F 30KΩ @ 32°F

Yes Back No

F13

Back Home

Lack of Refrigerant

Replace sensor.

Back

F13

Back Home

Lack of Refrigerant

Are the pins on the board and the sensor connector free of corrosion or defect?

Yes Back No

F13

Back Home

Lack of Refrigerant

Replace board.

Back

F13

Back Home

Lack of Refrigerant

Rehab the connector if possible. Replace sensor and/or board if needed.

Back

F39

Back Home

Open High Pressure Switch

Is high pressure switch connected to main board

Yes No

View as PDF

F39

Back Home

Open High Pressure Switch

Unplug connector. Is pressure switch open?

Yes Back No

F39

Back Home

Open High Pressure Switch

Is system pressure higher than switch open limit?

Yes Back No

F39

Back Home

Open High Pressure Switch

Are the indoor coils heating/cooling?

Yes Back No

F39

Back Home

Open High Pressure Switch

Is the outdoor unit installed too close to walls or are the coils blocked?

Yes Back No

F39

Back Home

Open High Pressure Switch

Replace EEV coil.

Back

F39

Back Home

Open High Pressure Switch

Is the outdoor unit installed too close to walls or are the coils blocked?

Yes Back No

F39

Back Home

Open High Pressure Switch

Fix install or clean coil.

Back

F39

Back Home

Open High Pressure Switch

Reconnect.

Back

F39

Back Home

Open High Pressure Switch

Replace PCB.

Back

F39

Back Home

Open High Pressure Switch

Replace limit switch.

Back

F39

Back Home

Open High Pressure Switch

Replace limit switch.

Back

F39

Back Home

Open High Pressure Switch

Is EEV coil out of position or have an open coil? Read 46Ω Red->Violet Red->Yellow Red->Orange Red->Blue

Yes Back No

F39

Back Home

Open High Pressure Switch

Replace PCB.

Back

F39

Back Home

Open High Pressure Switch

Unit is overcharged. Recover and recharge system.

Back

F40

Back Home

Open Low Pressure Switch

Is low pressure switch connected to main board

Yes No

View as PDF

F40

Back Home

Open Low Pressure Switch

Unplug connector. Is pressure switch open?

Yes Back No

F40

Back Home

Open Low Pressure Switch

Is system pressure lower than switch open limit?

Yes Back No

F40

Back Home

Open Low Pressure Switch

Are the indoor coils heating/cooling?

Yes Back No

F40

Back Home

Open Low Pressure Switch

Unit is low on refrigerant. Check for leaks. Weigh out current charge, fix and recharge system.

Back

F40

Back Home

Open Low Pressure Switch

Replace EEV coil.

Back

F40

Back Home

Open Low Pressure Switch

Reconnect.

Back

F40

Back Home

Open Low Pressure Switch

Replace PCB.

Back

F40

Back Home

Open Low Pressure Switch

Replace limit switch.

Back

F40

Back Home

Open Low Pressure Switch

Replace limit switch.

Back

F40

Back Home

Open Low Pressure Switch

Is EEV coil out of position or have an open coil? Read 46Ω Red->Violet Red->Yellow Red->Orange Red->Blue

Yes Back No

F40

Back Home

Open Low Pressure Switch

Replace PCB.

Back

F40

Back Home

Open Low Pressure Switch

Recover and recharge system.

Back