Line Phase Failure

What does 6 mean?

This fault indicates a loss of one line phase (L1, L2, or L3) either during initial network detection or after the network has been successfully established. Note that the failure of two line phases does not trigger this error, but rather a 'Not ready, 24V' state without an explicit error message. Prolonged operation with a missing phase can lead to motor damage, unit malfunction, and potential safety hazards due to unbalanced loads. It is crucial to resolve this promptly to prevent further component stress.

Complete Troubleshooting Guide

1. 1

   Inspect the main power supply connection to the MOVIFIT unit for any loose or broken wires on the L1, L2, or L3 terminals.

2. 2

   Use a multimeter to check for voltage on all three line phases (L1, L2, L3) at the unit's input terminals to confirm phase presence.

3. 3

   Verify that the upstream circuit breaker or fuse for the power supply is not tripped or blown, and reset/replace if necessary.

4. 4

   Ensure the power grid supplying the system is stable and not experiencing intermittent or sustained phase loss from the utility side.