PLCFX5UVerified · sol.ls-electric.com
FX5U LED-CARD — CARD LED red
Alarm — operational, inspection needed· AUTO-RESET
CAUSE
Why does it occur?
SD card access error
REMEDY · Step by step
How to fix it?
Remove and reinsert the SD card; verify it is genuine and properly formatted
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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