InverterFR-A800Verified · sol.ls-electric.com
FR-A800 E.CPU — Fault 5
Critical — power cycle required
CAUSE
Why does it occur?
- The inverter output is shut off if the communication fault of the built-in CPU occurs
- Check for devices producing excess electrical noises around the inverter
REMEDY · Step by step
How to fix it?
• Take measures against noises if there are devices producing excess electrical noises around the inverter. • 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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