Troubleshooting for PFC module temperature sensor faults (3-11-n)

A 3-11-n fault code indicates a problem with the Power Factor Correction (PFC) temperature sensor circuit.

Fault codes and fault LEDs

Fault code Fault LEDs Torch LED Description Stops the system from operating?
3-11-0

ON

ON

Red

The PFC temperature sensor is open. Yes
3-11-1 The PFC temperature sensor short-circuited. Yes
3-11-2 No communication with the PFC temperature sensor circuit. Yes

Corrective action for 3-11-0, 3-11-1, and 3-11-2 faults

  1. Perform a cold restart.

    If that does not fix the problem, it is possible that the power Printed Circuit Board (PCB) failed.

  2. Replace the power PCB if necessary.