Service diagnosis
Domestic air conditioner
Malfunction
detection
conditions
Supposed
causes
Troubleshooting
'
Be sure to turn off power switch before connect or disconnect connector, or
else
parts damage may be caused
1.Indoor temperature ˉ Outdoor condenser
temperature≤ 4ć
2. Both indoor and outdoor temperature≥25 ć
3. Compressor frequency≥52 Hz
Are above premises are satisfied simultaneously?
ƵShort of refrigerant
The compressor has run continuously for
more than 5 minutes and the running current
of outdoor unit is between 0.6A and 1.6A
(current of whole outdoor unit)
At cooling or
dehumidification mode
At heating mode
1.Indoor evaporator temperatureˉindoor ambient
temperature≤5ć
2. Both indoor and outdoor temperature is within
-7 23 .ć
3. Compressor frequency≥60 Hz
Are above premises are satisfied simultaneously?
Activated when the temp. which being sensed by the room temperature
sensor, is 4ć lower than heat-exchanger temp. in cooling or dehumidifying
mode, or heat-exchanger temp. is 5ć lower than room temp. in heating
m
ode,twice in 30 minutes.
YES
YES
Poor cooling/heating, test system pressure,
pressure is lower than normal value?
YES
NO
Compressor is broken, replace.
Refrigerant lack, rechargeable
vacuum fluoride
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