Mitsubishi Electric MUZ-FD25VABH - E1 Service Manual page 36

Mitsubishi ilmalämpöpumput huoltaa ja korjaa: Jäähdytinpalvelu RefGroup Oy
11-5. TROUBLESHOOTING FLOW
A How to check inverter/compressor
MUZ-FD25/35
Disconnect the connector (CN61) between
compressor and the intelligent power module
(IPM).
Check the voltage between terminals.
Are the voltages balanced?
Yes
Check the compressor.
See 11-5. "Check of open phase".
Replace the inverter P.C. board.
No
See 11-5. "Check of compressor".
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