InverterFR-F800Verification pending — cross-check with the official manual
FR-F800 E.IOH — Inrush overheat
Trip — immediate stop
CAUSE
Why does it occur?
- The inverter trips when the resistor of the inrush current limit circuit is overheated
- The inrush current limit circuit failure Check that frequent power ON/OFF is not repeated. Check if the input side fuse (5A) in the power supply circuit of the inrush current limit circuit contactor (FR-F840-03250(132K) or higher) is blown. Check that the power supply circuit of inrush current limit circu
REMEDY · Step by step
How to fix it?
- Configure a circuit where frequent power ON/OFF is not repeated
- If the situation does not improve after taking the above measure, please contact your sales representative
Do not reset repeatedly before identifying the cause. Repeated resets while ignoring a trip/alarm can cause secondary damage (IGBT failure, motor winding damage, etc.).
SOURCE
Related manual page
Summary based on the official Mitsubishi Electric manual. For accurate and complete information, always consult the official manual.
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