42
Installation and Maintenance
Service Manual
The indoor fan motor is burned or
breaks or has the heat protector
malfunction.
Replace the fan motor or the defective part.
Wrong connection
Make the correction connection based on
the circuit drawing.
The fan capacitor has open circuit or
is damaged.
The fan does not
run when it is set
to supply air.
Replace the fan capacitor of the same type
and same specification.
The outdoor fan motor is damaged.
Replace the fan motor
Wrong connection
Make the correct connection based on the
circuit drawing
The outdoor fan capacitor is damaged.
Replace the fan capacitor
Malfunction of compressor
Replace the compressor
Breakage of running capacitor of
compressor
Replace the capacitor
The voltage is too low or too
high.
Manostat is recommended.
Wrong wire connection
Connect the circuit diagram correctly
The built-in heat protector of the
motor breaks frequently because the
motor is abnormal.
Replace the fan motor
Adjust the volume of the refrigerant
The refrigerant is not enough or is too
much.
Replace the capillary
The capillary is blocked and the tem-
perature rises.
The compressor does not run
smoothly or is stuck. The air discharge
valve is damaged
Replace the compressor
The protector itself has malfunction.
Replace the protector
The compres-
sor is too hot
and leads to the
action of the
protector.
The protector itself has malfunction.
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
In the cooling and
heating mode,
the compressor
runs, but the out-
door fan does not
run.
In the cooling
and heating
mode, the
outdoor fan
runs, but the
compressor
does not run.
