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Determine if the unit is properly sized for the area to be cooled
or heated.
Clean or replace if restricted.
shaded pole motor failure
Check and replace if the motor is failure.
Check the fan capacitor and replace if not within +/-10% of
manufactures rating.
Clean or remove if any barrier is found to block the inlet/outlet
wind flow of the unit.
Check the tubes for reasons of leakage. Recycle the
refrigerant, correct the leakage points and recharge.
Regulate the flow if capillary tube and make the evaporating
temperature appropriate if the evaporator is frosted. Replace if
blocked. Repair joint if leaking.
The inlet and outlet valve of the compressor is damaged,
making the low pressure connected with the high pressure.
The refrigerating system can not produce high pressure and
low pressure. Replace the compressor after checking for the
reason.
Check the voltage. Call an electrician if no within the limit.
Check the terminals. Repair and correct if loose.
Check and adjust the temperature setting.
Check and adjust the mode setting.
Check and replace if the compressor, the over-load protector
or wiring is broken.
Check and replace if the heater is damaged.
Check and replace if the fuse is damaged.
Check the voltage of main PCB. Replace the main PCB when
the unit failure in heating mode.
The unit starts and
stops frequently.
The input power supply voltage is too low. Call an electrician if
not within limits.
Check and replace the main PCB if the compressor relay on
PCB is shorted or damaged.
When the room temperature is too high, the compressor will
protect.
Exploded View & Parts Listing: MPN-10CRN1-BH9
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