Haier HSU12VHG-B Service Manual page 53

7.3 Error Codes and Description indoor display
Indoor Outdoor
Indoor Malfunction
Outdoor
Malfunction
HSU129HG(DB)-SM
Code indication
Outdoor
Indoor (LED1 flash
times)
E7 15
E1 /
E2 /
E4 /
E14 /
F12 1
2
F1
3
F22
F3 4
F19 6
F27 7
F4 8
F8 9
F21 10
F7 11
F6 12
F25 13
F11 18
F28 19
F2 24
F23 25
F36 39
Description
Communication fault between indoor and
outdoor units
Room temperature sensor failure
Heat-exchange sensor failure
Indoor EEPROM error
Indoor fan motor malfunction
Outdoor EEPROM error
The protection of IPM
Overcurrent protection of AC electricity for
the outdoor model
Communication fault between the IPM and
outdoor PCB
Power voltage is too high or low
Compressor is lockrotor or stopt momentary
Overheat protection for exhaust temperature
Outdoor DC fan motor fault
Frost-removing temperature sensor failure
Suction temperature sensor failure
Ambient temperature sensor failure
Exhaust temperature sensor failure
deviate from the normal for the compressor
Loop of the station detect error
Overcurrent of the compressor
Overcurrent protection for single-phase of the
compressor
Middle part of condenser temperature sensor
failure
50
Service Diagnosis
Reference
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Domestic Air Conditioner