12. TROUBLESHOOTING
If one of the following malfunctions occur, stop operation, shut off the power, and contact with the dealer.
TROUBLES
Fuse or circuit breaker work frequently.
Foreign matter or matter has fallen into the unit.
Remote controller is disabled or the switch is out of order.
Any other unusual condition is observed.
12.1 Trouble and causes of air conditioner
In any of the following conditions occur, check your unit and resolve corresponding problems referring to given
remediation. If the trouble can’t settled contact the dealer. (see the table below)
Trouble
Cause
Solutions
Unit does not start
Power failure.
Wait for the comeback of power
Power switch is off.
Switch on the power
Fuse of power switch may have burned.
Replace the fuse
Batteries in remote controller are exhausted
or other problem of controller.
Replace the batteries or check the
controller
Air flowing normally
without cooling (heating)
effect
Temperature is not set correctly.
Set the temperature properly.
Be in 3 minutes protection of compressor
Wait.
Units start or stop
frequently
Refrigerant is too little or too much.
Check leakage, and rightly recharge
refrigerant.
Air or no concreting gas in the refrigerating
circuit.
Vacuum and recharge refrigerant.
Compressor is malfunction.
Maintenance or change compressor.
Voltage is too high or too low.
Install manostat.
System circuit is blocked.
Find reasons and solution.
Low cooling effect
Outdoor unit and indoor unit heat exchanger
is dirty.
Clean the heat exchanger.
The air filter is dirty.
Clean the air filter.
Inlet/outlet of indoor/outdoor units is blocked.
Eliminate all dirties and make air smooth.
Doors and windows are open
Close doors and windows.
Sunlight directly shine.
Make curtains in order to shelter from
sunshine.
Too much heat resource.
Reduce heat source.
Outdoor temp. is too high.
AC cooling capacity reduces (normal).
Low heating effect
Leakage of refrigerant or lack of refrigerant.
Check leakage and rightly recharge
refrigerant
Outdoor temperature is lower than 7°C
Use heating device.
Doors and windows not completely closed.
Close doors and windows.
Leakage of refrigerant or lack of refrigerant.
Check leakage and rightly recharge
refrigerant.
33
Summary of Contents for Dual DC Inverter (4,1 kW)
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