Troubleshooting guide

56
General Check
When any air conditioner malfunction is noted, immediately switch off the power
supply to the unit and contact the local dealer if necessary.
Problem Symptom Check Item Suggested Action
Check the power supply Check to make sure that the rated
voltage is supplied.
Check the fuse Check and replace the fuse.
The unit does not work
Check the remote controller timer
setting
Make sure the delay timer is set
correctly.
Check the power supply Check to make sure that the rated
voltage is supplied.
Check the fan motor capacitor Check and replace the capacitor.
Check the fan motor Check and replace the fan motor.
Fan does not work
Check the switch Check and change the switch.
Check if the thermostat setting too
high
Reset thermostat.
Check the compressor capacitor Check and replace the capacitor.
Check the compressor Check and replace the compressor.
Fan work, but
compressor does not
work
Check the compressor contactor Check and replace the contactor.
Check if the thermostat setting too
high
Reset thermostat.
Check if the condenser coil dirty Clean the condenser coil.
Check the condenser installation
condition
Make sure the condenser is installed
according to factory’s recommendation.
Air conditioner work
but cooling not
satisfactory
Diagnosis by service port pressure
and operating Current
Check for insufficient refrigerant.
Check the air filter Check and make sure the air filter is
clean.
The air flow is too low
Check the fan / blower condition Check and make sure that the fan /
blower are in good condition.
Check and replace the battery.
The remote controller
light is dim
Check the battery
Make sure the batteries are correctly
inserted.