Trane TVR Pro CO Series Service Manual page 110

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The power supply is abnormal
Voltage between P and N on fan module
Replacing the fan module resolves the
Replace outdoor main PCB
Notes:
1. The normal voltage between P and N on the fan module is 310V DC.
No
No
is abnormal
1
No
error
No
Figure 6-2.12: Fan module P N terminals
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Yes
Check the power supply equipment
Yes
Replace AC filter board
109