Inrush Current Limit Circuit Overheat

What does E.IOH mean?

The inverter output is shut off when the resistor in the inrush current limit circuit has overheated, indicating a fault within this circuit. This typically results from frequent power ON/OFF cycles or a damaged component within the inrush current path. Continued operation with this fault risks further component damage.

Complete Troubleshooting Guide

1. 1

   Review the application and modify the control logic to prevent frequent power ON/OFF cycles to the inverter.

2. 2

   Check for a blown 5A input fuse in the power supply circuit for the inrush current limit contactor.

3. 3

   Inspect the power supply circuit and contactor of the inrush current limit for any physical damage.

4. 4

   If the problem persists after these steps, contact your sales representative.