Friedrich MW09C1H Service Manual page 57

Troubleshooting
Mainly detect:
Whether the compressor wiring is connected correct?
Is time for compressor stopping enough?
Is compressor broken?
N
Power on the unit
Is stop time of the compressor
longer than 3 minutes?
Y
Does startup fail?
Y
Are the wires for the compressor connected
correctly? Is connection sequence right?
Y
Replace the control panel AP1
If the fault is eliminated?
N
Replace the
compressor
End
N
Restart it up after 3 minutes
Connect the wires as per the
N
connection diagram
Y
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