InverterFR-A800Verification pending — cross-check with the official manual
FR-A800 E.SCF — Fault
Trip — immediate stop
CAUSE
Why does it occur?
- The inverter output is shut off when an output short-circuit is detected while Pr.521 = "1"
- When Pr.521 = "0" (initial value), E.OC1, E.OC2, or E.OC3 appears when an output short-circuit is detected
- Check for output short-circuit
REMEDY · Step by step
How to fix it?
Check the wiring to make sure that any output short circuit does not occur, then turn OFF the control circuit power to reset the inverter.
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.
Open official manual ↗