Haier HSU-12HSA03 Service Manual page 41

With this malfunction, LED1
F22 on the outdoor mainboard
blinks 3 times.
With the malfunction, LED1
on the outdoor mainboard
F1
blinks 2 times at frequency
of 1 Hz
With the malfunction, LED1
on the outdoor mainboard
E9
blinks 21 times at frequency
of 1 Hz
With outdoor EEPROM,
LED1 on the outdoor
E4,F12
mainboard blinks once at
frequency of 1 Hz
E14
With the malfunction, LED1
on the outdoor mainboard
F8
blinks 9 times at frequency
of 1 Hz
With the malfunction, LED1
on the outdoor mainboard
F3
blinks 4 times at frequency
of 1 Hz
With the malfunction, LED1
on the outdoor mainboard
F19
blinks 6 times at frequency
of 1 Hz
Haier air conditioner
1)The SPDU is broken
2)The power supply is not good
3) The system may have been over or under
charged with gas
1)IPM Module might be poorly radiated
2)IPM Module might be broken
3)Compressor might be broken
1)Check whether the indoor unit blows
poorly due to blocked filters or poor
condition of the fan
2)The system is over charged with gas
3)Temperature of coil pipes on the indoor
unit too high
1)E4 the indoor PCB might be damaged
2)F12 the outdoor PCB might be damaged
1) Whether Terminal CN2 on the indoor
mainboard is well inserted or not?
/
2) The indoor mainboard is damaged
3) The motor of the indoor unit is damaged
1)The installation on terminal CN2 might be
not good
2)The mainboard of the indoor unit is
damaged
3)The motor of the Outdoor unit is damaged
1)The connection between IPM and the
outdoor PCB might be not good
2)The mainboard of the outdoor unit is
damaged
3)The IPM module is damaged
1)The IPM module is damaged
2)Check power supply
3)The reactor of outdoor is damage
4)The rectifying bridge or IPM module is
damage
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Edition: 20070116