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 Indoor Outdoor
LED4 LED3
2 1
2 2
2 3
2 4
2 5
2 6
2 7
2 8
2 9
3 0
3 1
3 2
3 3
3 4
3 5
3 6
3 7
3 8
3 9
4 0
4 1
4 2
4 3
4 4
4 5
4 6
4 7
4 8
4 9
5 0
5 1
5 2
5 3
5 4
5 5
5 6
5 7
5 8
5 9
6 0
6 1
6 2
6 3
6 4
6 5
0 1
0 2
0 4
0 7
0 8
0 12
0 13
0 14
G-14
Diagnosis
LED
1 Outdoor EEPROM failure
2 IPM overcurrent or short circuit
/ Compressor over current during deceleration
4 Communication failure between the IPM and outdoor PCB
5 Module operated overload (compressor overload protection)
6 Module low or high voltage
/ Compressor current sampling circuit fault
8 Overheat protection for discharge temperature
9 Malfunction of the DC fan motor
10 Malfunction of defrost temperature sensor
11 Suction temperature sensor failure
12 Ambient temperature sensor failure
13 Discharge temperature sensor failure
/ PFC circuit loop voltage
15 Communication failure between the indoor & outdoor unit
16 Lack of refrigerant or discharging
17 4-way valve switching failure
18 Loss of synchronism detection
/ Low DC or AC voltage
20 Indoor thermal overload
21 Indoor coil frosted
/ PFC circuit loop overcurrent
23 Module thermal overload
24 Compressor start failure, over-current
25 Phase current protection (IPM)
26 MCU reset
27 Module current detect circuit malfunction
28 Liquid pipe sensor failure: Circuit A
29 Liquid pipe sensor failure: Circuit B
30 Liquid pipe sensor failure: Circuit C
31 Liquid pipe sensor failure: Circuit D
32 Gas pipe sensor failure: Circuit A
33 Gas pipe sensor failure: Circuit B
34 Gas pipe sensor failure: Circuit C
35 Gas pipe sensor failure: Circuit D
36 Gas pipe sensor failure: Circuit E
/ Compressor overcurrent detected by IPM
38 Malfunction of module temperature sensor momentary power failure detection
39 Malfunction of condensing temperature sensor
40 Liquid pipe sensor failure: Circuit E
41 Toci temperature sensor failure
42 High Pressure switch open
43 Low Pressure switch open
44 System high pressure protection: Overcharged, high condensing temperature or malfunction of fan motor
45 System low pressure protection: Undercharged, low defrosting temperature, or malfunction of fan motor
/ Indoor ambient temperature sensor failure
/ Indoor coil temperature sensor failure
/ Indoor PCB EEPROM failure
/ Communication fault between the indoor and outdoor unit
/ Communication fault between the controller and Indoor unit
/ Drain system malfunction
/ Zero cross signal detected wrong
/ Indoor fan motor malfunction
MID-STATIC DUCTED TECHNICAL OVERVIEW

Error Codes