InverterFR-F800Verification pending — cross-check with the official manual
FR-F800 LDF — Load fault warning
Alarm — operational, inspection needed
CAUSE
Why does it occur?
Appears when the load is deviated from the detection width set in Pr.1488 "Upper limit warning detection width" or Pr.1489 "Lower limit warning detection width". Check if too much load is applied to the equipment, or if the load is too light. Check that the load characteristics settings are correct.
REMEDY · Step by step
How to fix it?
- Inspect the equipment. Set the load characteristics (Pr.1481 to Pr.14
- correctly.
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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