Mains phase failure

What does F-06 mean?

A phase failure in the 3-phase mains supply or an under-voltage condition has occurred, leading to an immediate switch-off with inhibit. This protects the inverter from operating with an unbalanced or insufficient power supply. Continuous operation under these conditions can stress and damage the inverter and motor.

Complete Troubleshooting Guide

1. 1

   Inspect the power supply cable and connections to ensure all three phases are present and securely connected.

2. 2

   Measure the incoming mains voltage at the inverter terminals to confirm it meets specifications.

3. 3

   Check upstream circuit breakers, fuses, and power distribution for any tripped devices or open circuits.