Mitsubishi Electric e Series Service Handbook page 137

[ IX Troubleshooting ]
[4] Remove the wire for the out-
Check the fan door fan motor, and check the
motor ground fan motor megger and the
fault or the winding resistance.
winding.
[5] (1)
Check the fan
board failure.
(2)
(3)
HWE20010
Items to be checked
Check the fan output wir-
ing.
Check the connector
CNVDC/CNDCP connec-
tion.
Check the FAN board
failure.
Phenomena
1) Fan motor megger failure
Failure when the megger is 1Mohm
or less.
2) Fan motor disconnection
Standard: The winding resistance
is approximately several ohm.
(It varies depending on the tem-
perature, or while the inner thermo
is operating, it will be
Connector contact failure
Board side
Fan motor side
Cnnector contact failure
1) The voltage imbalance among
each motor wiring during operation
(The voltage imbalance is greater
than the larger of the values repre-
sented by 5% or 5V.)
2) The same error occurs even after
the operation is restarted.
- 128 -
Remedy
Replace the fan motor.
ohm)
Connect the connector.
Connect the connector.
Replace the FAN board.
GB