InverterFR-E800Verification pending — cross-check with the official manual
FR-E800 UV — UV
Alarm — operational, inspection needed
CAUSE
Why does it occur?
- If the power supply voltage of the inverter decreases, the control circuit will not perform normal functions
- In addition, the motor torque will be insufficient and/or heat generation will increase
- To prevent this, if the power supply voltage decreases to about 115 VAC (230 VAC for the 400 V class, 330 VAC for the 575 V class, 58 VAC for the 100 V class) or below (when the PM sensorless vector co
REMEDY · Step by step
How to fix it?
Check the devices on the power system such as the power supply itself.
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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