Trouble Shooting - Haier HSU-12HSA03 Service Manual

5. Trouble shooting

Indoor
E1
E2
F21
F25
F6
E7
F11
F4
Haier air conditioner
Outdoor
/
/
With the malfunction, LED1
on the outdoor mainboard
blinks 10 times at frequency
of 1 Hz
With the malfunction, LED1
on the outdoor mainboard
blinks 13 times at frequency
of 1 Hz
With the malfunction, LED1
on the outdoor mainboard
blinks once at 12 times of 1
Hz and interval of 2 seconds
or so.
With the malfunction, LED1
on the outdoor mainboard
blinks 15 times
With the malfunction, LED1
on the outdoor mainboard
blinks17or18 times at
frequency of 1 Hz
With the malfunction, LED1
on the outdoor mainboard
blinks 8 times at frequency
of 1 Hz
Possible Reasons
1)Room-temperature sensor
2) Indoor PCB
1)Heat-exchange sensor
2)Indoor PCB
1) Defrosting temperature sensor
2) Outdoor PCB
1) Exhaust temperature sensor
2) Outdoor PCB
1) Ambient temperature sensor
2) Outdoor PCB
1)The outdoor mainboard needs
dehumidification
2)The outdoor mainboard needs
dehumidification
3)The linking cable between the indoor and
outdoor units is not well connected or the
core wires are not well insulated 4)The
indoor PCB might be broken
5)The outdoor PCB might be broken
6)The SPDU might be broken
1) The wiring of compressor is incorrect or
the connection is poor
2)The SPDU might be broken
3) Compressor might be damaged.
1) The cryogen may have been leaked
during installation, or there may be leakage
in the piping system.
2)Exhaust temperature sensor is broken
3) The outdoor mainboard is damaged and
needs be replaced
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Edition: 20070116