Mitsubishi Electric PUHY-P200 Service Handbook page 287

[ IX Troubleshooting ]
Is the wiring between the
FAN board, 52F, and fan
motor connected correctly?
Does 52F operate on the
coil voltage (206-252V)?
Is a voltage of
between 188V and 253V (TJMU) or
between 414V and 506V (YJMU)
applied to the power supply input?
HWE10040
NO
YES
NO
YES
NO
YES
Check the wiring between
52F and the control board.
Check that the secondary voltage on the
transformer is between 206V and 252V.
Fuse is normal
Correct the wiring according to the wiring
diagram.
NO Correct the wiring according to the
wiring diagram.
YES
NO
Replace the transformer and fuse.
YES
- 278 -
Replace 52F.
Replace the control board.
GB