Error Codes - Haier AW07EH2VHA Service Manual

The error codes that are displayed on the indoor units may vary from the outdoor unit codes. The information communicated by
the error code will be the SAME for both indoor and outdoor units even though the numbers may differ.
Indoor Outdoor
Display LED
F12 1
F1 2
F22 /
F3 4
F20* 5
F19* 6
F27 /
F4 8
F8* 9
F21 10
F7 11
F6 12
F25 13
F30* /
E7 15
F13* 16
F14* 17
F11 18
F28 /
F15* /
E9 20
E9* 21
E5 21
E5* /
F5* 23
F2* 24
F23* 25
F9 26
F24 27
F10 28
F16 29
F17 30
F18 31
F29 32
F30 33
F31 34
F32 35
F26 36
F34 /
F35 38
F36 39
F33 40
F38 41
F39 42
F40 43
F41 44
F42 45
F43 /
E1 /
E2 /
E4 /
E14* /
* Hidden indoor error code. LED1 will flash outdoors, but no error will appear on indoor unit display. To view error code on indoor display, press and hold the
Emergency button for 15 seconds.
C-10

Error Codes

Diagnosis
Outdoor EEPROM failure
IPM overcurrent or short circuit
Outdoor alternating current, over current protection
Communication failure between the IPM and outdoor PCB
Module operated overload (compressor overload protection)
Module low or high voltage
Compressor current sampling circuit fault
Overheat protection for discharge temperature
Malfunction of the DC fan motor
Malfunction of defrost temperature sensor
Suction temperature sensor failure
Ambient temperature sensor failure
Discharge temperature sensor failure
High outdoor suction temperature
Communication failure between the indoor & outdoor unit
Lack of refrigerant or discharging
4-way valve switching failure
Loss of synchronism detection
Position detection circuit fault of compressor
Terminal block temp too high
Indoor thermal overload
Indoor unit overload protection, heating mode only.
Indoor coil frosted
Indoor anti-frosting protection
Module thermal overload
Compressor start failure, over-current
Phase current protection (IPM)
MCU reset
Module current detect circuit malfunction
Liquid pipe sensor failure: Circuit A
Liquid pipe sensor failure: Circuit B
Liquid pipe sensor failure: Circuit C
Liquid pipe sensor failure: Circuit D
Gas pipe sensor failure: Circuit A
Gas pipe sensor failure: Circuit B
Gas pipe sensor failure: Circuit C
Gas pipe sensor failure: Circuit D
Gas pipe sensor failure: Circuit E
Outdoor pipe temperature protection in cooling mode
Malfunction of module temperature sensor momentary power failure detection
Malfunction of condensing temperature sensor
Liquid pipe sensor failure: Circuit E
Toci temperature sensor failure
High Pressure switch open
Low Pressure switch open
System high pressure protection: Overcharged, high condensing temperature or malfunction of fan motor.
System low pressure protection: Undercharged, low defrosting temperature, or malfunction of fan motor.
Incorrect match between indoor & outdoor
Indoor ambient temperature sensor failure
Indoor coil temperature sensor failure
Indoor PCB EEPROM failure
Indoor fan motor malfunction
WALL MOUNT TECHNICAL OVERVIEW