Replace after checked failure.
Connector failure or loose Repair or replace the sensor.
Indoor PCB failure Replace after checked failure.
Soft starter module failure
Check the module and the capacitor connected to the
module. Replace if failure.
Power failure Wait if checked the power voltage is really too low.
Wiring failure Correct if indoor fan motor wiring is loose.
Indoor fan motor failure Check the input of fan motor. Replace if failure.
Indoor PCB failure Replace after checked failure.
Clean or replace if restricted.
Room structure
Take proper measures to make the door and windows
sealed well if gap is found.
Air flow
Clean or remove if any barrier is found to block the
inlet/outlet wind flow of the unit.
Sunlight Add a awning if the outdoor unit is exposed to the sunlight.
Outdoor fan motor
Check the fan capacitor on outdoor power control board and
replace the board if not within +/-10% of manufacturer's
rating. Replace the motor if the speed is not within +/-10% of
manufacturer's rating but not because of the capacitor.
For electrical function 2.3 models. Check the fan capacitor in
indoor electric box (for some models, the capacitor is on
main PCB.) and replace the capacitor (or main PCB) if not
within +/-10% of manufacturer's rating.
Replace the motor if the speed is not within +/-10% of
manufacturer's rating but not because of the capacitor.
Less refrigerant
Check the tubes for reasons of leakage. Recycle the
refrigerant, correct the leakage points and recharge.
Capillary tube
Regulate the flow if capillary tube is blocked. Make the
evaporating temperature appropriate if the evaporator is
frosted.
Compressor
The inlet and outlet valve of the compressor is damaged,
making the low pressure connected with the high pressure.
The refrigerating system is difficult to produce high pressure
and low pressure. Replace the compressor after checking for
the reason.
Heat sources Reduce if over loaded.
reverse valve
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