Gree GWH18UC-K3DNA1A/I Service Manual page 39

The indoor fan motor is burned or
breaks or has the heat protector
malfunction.
The built-in heat protector of the
The fan does not
motor breaks frequently because the
run when it is set
motor is abnormal.
to supply air.
Wrong connection
The fan capacitor has open circuit or
is damaged.
The outdoor fan motor is damaged.
In the cooling and
heating mode,
the compressor
Wrong connection
runs, but the out-
door fan does not
The outdoor fan capacitor is damaged.
run.
Malfunction of compressor
Breakage of running capacitor of
In the cooling
compressor
and heating
mode, the
outdoor fan The voltage is too low or too
runs, but the
high.
compressor
does not run.
Wrong wire connection
The protector itself has malfunction.
The refrigerant is not enough or is too
much.
The capillary is blocked and the tem-
The compres-
perature rises.
sor is too hot
and leads to the
The compressor does not run
action of the
smoothly or is stuck. The air discharge
protector.
valve is damaged
The protector itself has malfunction.
Replace the fan motor or the defective part.
Replace the fan motor
Make the correction connection based on
the circuit drawing.
Replace the fan capacitor of the same type
and same specification.
Replace the fan motor
Make the correct connection based on the
circuit drawing
Replace the fan capacitor
Replace the compressor
Replace the capacitor
Manostat is recommended.
Connect the circuit diagram correctly
Use the multimeter to check whether the
contact of the compressor is on when it is
not overheated. If it is not on, then replace
the protector
Adjust the volume of the refrigerant
Replace the capillary
Replace the compressor
Replace the protector