A1428 / F1429 fault in WEG CFW900 Drive

A1428 / F1429 Slot D sensor 1 high temp / overtemperature fault in WEG CFW900 Drive

These codes indicate a Slot D Sensor 1 High Temperature. This means the monitored external equipment has exceeded its safe thermal limits.
Cause:

  • The monitored equipment is operating at high temperature.
  • Fault actuation level configuration error.

Remedy:

Verify equipment active operating temperature levels. Review parameter configurations for fault actuation thresholds.