Fan motor does not operate or stops operating shortly after starting the operation.
D Check of outdoor fan motor
Check the connection between the connector CN931 and CN932.
Is the resistance between each ter-
minal of outdoor fan motor normal? Yes (Refer to
No
(Fixed to either 5 or 0 VDC) No
No
Replace the outdoor DC fan motor.
Disconnect CN932 from outdoor electronic control P.C. board, and turn on the power supply.
Rotate the outdoor fan motor manually and measure the voltage of CN931.
Between 1(+) and
Between 2(+) and
Between 3(+) and
Does the voltage between each terminal become 5 VDC and 0 VDC repeatedly?
Yes
Does the outdoor fan motor rotate smoothly?
Yes
Replace the outdoor electronic control P.C. board.
Outdoor unit does not operate.
E Check of power supply
Check the connecting of parts of main power supply circuit.
Turn ON power supply.
Is there voltage of 208 / 230 VAC in the power supply terminal block?
Yes
Is the output voltage from the noise filter P.C. board 208 / 230 VAC?
Yes
Is the input voltage to the power board 208 / 230 VAC?
Yes
|
| Check the power supply cable. | |
No | |||
| |||
|
| Replace the noise filter P.C. board. | |
No | |||
| |||
|
| Replace the reactor. | |
No | |||
| |||
Is the input voltage to the outdoor electronic |
|
|
| ||
|
| Replace the power board. | |||
control P.C. board 294 / 325 VDC? | No | ||||
| |||||
| Yes |
|
|
| |
|
|
|
|
| |
Replace the outdoor electronic control P.C. board.
31