External Thermal Relay Operation

What does External thermal relay operation mean?

The external thermal relay connected to the OH signal has been activated. This indicates that the motor or connected equipment is experiencing an overload condition, potentially causing damage if not addressed. The inverter will not restart unless it is manually reset after the relay contacts return to normal.

Complete Troubleshooting Guide

1. 1

   Reduce the mechanical load on the motor and operate the equipment less frequently.

2. 2

   Reset the inverter after the external thermal relay contacts have automatically or manually reset.