Mains Phase Missing

What does F00020 mean?

One or more of the three-phase AC input power lines to the drive is disconnected or has failed while the drive is enabled and under load. This can lead to unbalanced operation, component stress, and potential damage to the inverter or motor if not corrected, causing reduced performance and premature equipment failure.

Complete Troubleshooting Guide

1. 1

   Examine the incoming mains power wiring for any loose connections, breaks, or incorrect phasing.

2. 2

   Verify the presence of all three phases at the drive's input terminals using a multimeter.