Table 7-1
Symptoms
Power failure.
Causes
Solution
Wait for the comeback of power.
Unit does not start
Power switch is off.
Fuse of power switch may have burned.
Batteries of remote controller exhausted
or other problem of controller.
Switch on the power.
ReplLocation:
Replace the batteries or check the
controller.
Air flowing normally but
completely can't cooling
Temperature is not set correctly.
Be in 3 minutes protection of
compressor.
Set the temperature properly.
Wait.
Units start or stop frequently
Low cooling effect
Low heating effect
Refrigerant is too little or too much.
Air or no concreting gas in the
refrigerating circuit.
Compressor is malfunction.
Voltage is too high or too low.
System circuit is blocked.
Outdoor unit and indoor unit heat
exchanger is dirty.
The air filter is dirty.
Inlet/outlet of indoor/outdoor units is
blocked.
Doors and windows are open
Sunlight directly shine. Too
much heat resource. Outdoor
temp. is too high. Leakage of
refrigerant or lack of refrigerant.
Outdoor temperature is lower than 7 C
Doors and windows not completely
closed.
Leakage of refrigerant or lack of
refrigerant.
Check leakage, and rightly recharge
refrigerant.
Vacuum and recharge refrigerant.
Maintenance or change compressor.
Install manostat.
Find reasons and solution.
Clean the heat exchanger.
Clean the air filter.
Eliminate all dirties and make air
smooth.
Close doors and windows.
Make curtains in order to shelter from
sunshine.
Reduce heat source.
AC cooling capacity reduces (normal).
Check leakage and rightly recharge
refrigerant.
Use heating device.
Close doors and windows.
Check leakage and rightly recharge
refrigerant.
owner's manual