Inrush Current Limit Circuit Fault

What does E.IOH mean?

This fault occurs when the resistor within the inverter's inrush current limit circuit overheats. This typically happens due to frequent power ON/OFF cycles to the inverter, stressing the charging components, or an internal component failure. Prolonged overheating can damage the inverter's power supply section and lead to critical failures.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   If the fault persists despite managing power cycles, perform a power cycle of the inverter and monitor its behavior.

2. 4

   If the problem still persists, contact a sales representative for diagnosis, as it may indicate a fault with the inrush current limiting components themselves.