Friedrich MW09C1H Service Manual page 47

Troubleshooting
The fan does not
run when it is set
to supply air.
In the cooling and
heating mode, the
compressor runs,
but the outdoor
fan does not run.
When cooling or
heating, outdoor
fan runs,compr-
essor
doesn't run.
The compressor is
too hot and leads to
the action of the
protector.
The swing fan
does not run.
The indoor fan motor is burned or bre-
aks or has the heat protector malfun-
ction.
The built-in heat protector of the motor
breaks frequently because the motor is
abnormal.
Wrong connection
The fan capacitor has open circuit or
is damaged
The outdoor fan motor is damaged.
Wrong connection
The outdoor fan capacitor is damaged.
Malfunction of compressor
Breakage of running capacitor of
compressor
The voltage is too low or too high.
Wrong wire connection
The protector itself has malfunction.
The refrigerant is not enough or is too
much.
The capillary is blocked and the temp-
erature rises.
The compressor does not run smoothly
or is stuck. The air discharge valve is
damaged
The protector itself has malfunction.
The torque of the swing motor is not
enough
wrong connection
The controller is damag e d IC2003 is
damaged , the swing relay can not close,
etc
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
First, check whether the connection is wrong. If no,
replace the parts
47