Fan Motor Error - GE UUC112WC Series Service Manual

Troubleshooting

Fan Motor Error

Check DC fan motor wiring
OK
Check fan driver
board for damage
OK
Check the CN8
port of main PCB
OK
Replace the fan motor
How to check CN8 port:
• The voltage between 1 and 2 should be 310V DC.
• The voltage between 3 and 2 should be 15V DC.
• The voltage between 4 and 2 should be 0-5V DC.
• The voltage between 5 and 2 should be 0-5V DC.
12
Start
Fan motor error
Error
Correct or repair wiring according
Error
Error
CONNECT SERIES SERVICE MANUAL
to the wiring diagram
Replace fan driver board
Replace the main PCB
5 (Blue wire): Fan speed signal back wire
4 (Yellow wire): Fan speed signal out wire
3 (White wire): Modular chip power wire
2 (Black wire): Ground wire
1 (Red wire): Fan motor power wire
Fan Motor Rated Voltage
Fan Motor Power Output
Fan motor Rated Speed
310VDC
220W
870 RPM