Mitsubishi Electric MUZ-GE25VA-a1 Service Manual page 75

I Check of outdoor fan motor
MUZ-GE25VA MUZ-GE25VAD MUZ-GE33VA MUZ-GE35VA
MUZ-GE42VA MUZ-GE42VAD MUZ-GE50VA MUZ-GE50VA2 MUZ-GE50VAD
Disconnect CN932 from the inverter P.C. board,
and measure the resistance of the outdoor fan
motor.
Is the resistance of outdoor fan motor normal?
(Refer to 11-4.)
Replace the inverter P.C. board.
MUZ-GE60VA MUZ-GE60VAD MUZ-GE71VA
MUZ-GE80VA MUZ-GE80VA2 MUZ-GE80VAD
Disconnect the connectors CN931
and CN932 from the inverter P.C.
board.
Check the connection between the
connector CN931 and CN932.
Is the resistance between each ter-
minal of outdoor fan motor normal?
(Refer to 11-4.)
No
(Fixed to either 5 or 0 VDC)
Replace the outdoor fan motor.
OBH532E
Yes
Yes
No
No
MUZ-GE35VA2 MUZ-GE35VAD
Replace the outdoor fan motor.
No
MUZ-GE71VAD
Disconnect CN932 from the inverter P.C. board, and turn on the
power supply.
Rotate the outdoor fan motor manually and measure the voltage
of CN931.
Between 1(+) and 5(-)
Between 2(+) and 5(-)
Between 3(+) and 5(-)
Does the voltage between each terminal become 5 and 0
VDC repeatedly?
Does the outdoor fan motor rotate smoothly?
Replace the inverter P.C. board.
75
Yes
Yes