Haier AS12GB3HRA Service Manual page 55

Malfunction
detection
conditions
Supposed
causes
Troubleshooting
At cooling or
dehumidification mode
1.Indoor temperature
4
2. Both indoor and outdoor
3. Compressor frequen
Are above premises are satisfied simultaneously?
YES
YES
Refrigerant lack, rechargeable
vacuum fluoride
Activated when the temp. which being sensed by the room temperature
sensor, is 4 lower than heat-exchanger temp. in cooling or dehumidifying
mode, or heat-exchanger temp. is
mode,twice in 30 minutes.
Short of refrigerant
Be sure to turn off power switch before connect or disconnect connector, or
else
parts damage may be caused
The compressor has run continuously for
more than
of outdoor unit is between 0.6A and 1.6A
(current of whole outdoor unit)
Outdoor condenser
Hz
Poor cooling/heating, test system pressure,
pressure is lower than normal value?
minutes and the running current
1.Indoor evaporator temperature indoor ambient
2. Both indoor and outdoor temperature is within
-7 23 .
3. Compressor frequen
Are above premises are satisfied simultaneously?
53
lower than room temp. in heating
At heating mode
Hz
YES
NO
Compressor is broken, replace.
Domestic air conditioner
Service diagnosis