Mitsubishi Electric Mr. SLIM MSZ-FA25VA Technical Manual página 344

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Outdoor unit does not operate. (LED display: display OFF)
Q Check of power supply
Start
Check the connecting of parts of main power supply circuit.
Turn on power supply.
Is there voltage of 230V AC in the
power supply terminal block?
Yes
Is the output voltage from the noise
filter P.C. board 230V AC?
Yes
Is the input voltage to the power board
230V AC?
Yes
Is the input voltage to the outdoor
electronic control P.C. board 325V DC?
Yes
Replace the outdoor electronic control
P.C. board.
344
[SUZ-KA50VA.TH SUZ-KA60VA.TH SUZ-KA71VA.TH]
No
Check the power supply cable.
No
Is fuse (F64) blown?
Yes
Replace the fuse.
No
Replace the reactor.
No
Replace the power board.
Replace the noise
No
filter P.C. board.

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