Power Loss

What does F003 mean?

Single-phase operation has been detected, combined with an excessive load on the motor. This condition typically arises from a lost phase on the incoming AC line or a severe voltage sag, causing the drive to struggle under load. It can lead to motor and drive overheating if unresolved.

Complete Troubleshooting Guide

1. 1

   Monitor the incoming AC line voltage and current for all phases to identify low voltage, power interruptions, or a missing phase.

2. 2

   Check all input fuses for continuity and proper rating, replacing any blown fuses immediately.

3. 3

   Reduce the mechanical load on the motor to ease the strain on the drive, especially during suspected single-phase operation.

4. 4

   Inspect power wiring connections from the main supply to the drive for looseness or damage.