InverterFR-A800Verification pending — cross-check with the official manual
FR-A800 E.IAH — Abnormal Intnl Temp
Trip — immediate stop
CAUSE
Why does it occur?
The inverter output is shut off when the inverter internal temperature reaches the specified value or higher. • Check for too high surrounding air temperature. • Check if the internal air circulation fan or the cooling fan stops due to a fault.
REMEDY · Step by step
How to fix it?
• Install an inverter suitable for the installation environment. (Refer to the Instruction Manual (Hardware).) • Replace the internal air circulation fan or the cooling fan.
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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