Haier HSU-18HVA103/R2(DB) - Trouble Shooting; Thermistor or Related Abnormality (indoor unit)

Error Codes and Description indoor display
Code indication
indoor
Outdoor
(LED1 flash
times)
Description
Reference
Page
Indoorand Outdoor
E7 15
Communication fault between indoor and outdoor
units
E1
Room temperature sensor failure
E2
Heat-exchange sensor failure
E4
Indoor EEPROM error
E14
Indoor fan motor malfunction
Indoor Malfunction
High work-intense protection
F12
1
Outdoor EEPROM error
F1
2
The protection of IPM
F22
3
Overcurrent protection of AC electricity for
the outdoor model
F3 4
Communication fault between the IPM and outdoor
PCB
F19 6
Power voltage is too high or low
F4 8
Overheat protection for exhaust temperature
F21
10
Frost-removing temperature sensor failure
F6
12
Ambient temperature sensor failure
F25
13
Exhaust temperature sensor failure
F11 18
deviate from the normal for the compressor
---- 19
Loop of the station detect error
E9 21
High work-intense protection
--- 24
Overcurrent of the compressor
Outdoor Malfunction
--- 25
Overcurrent protection for single-phase of the
compressor
HSU-18,22HVA103/R2(DB) Service Diagnosis
76
Domestic Air Conditioner
7.2.Trouble Shooting