A1334 / F1335 fault in WEG CFW900 Drive

A1334 / F1335 Slot C temperature sensor 3 error fault in WEG CFW900 Drive

These codes indicate a Slot C Temperature Sensor 3 Error. This means the external sensor wire is broken or short-circuited.
Cause:

  • Sensor 3 cable is broken.
  • Sensor 3 is short-circuited.
  • Sensor 3 is located in an extremely low temperature environment.

Remedy:

Check temperature sensor 3 cabling for open or short circuits. Verify that surrounding environmental temperatures are within system parameters.