Mitsubishi Electric MUZ-AP20VG, Руководство по обслуживанию

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32
I Check of outdoor fan motor
Is the resistance between each ter-
minal of outdoor fan motor normal?
(Refer to 12-4.)
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 V
DC repeatedly?
Does the outdoor fan motor rotate smoothly?
Replace the outdoor fan motor. Replace the inverter P.C. board.
Yes
Yes
No
(Fixed to either 5 or 0 V DC)
No
No
Yes
Disconnect the connectors CN931
and CN932 from the inverter P.C.
board.
Check the connection between the
connector CN931 and CN932.
OBH839A