PLCXGIVerification pending — cross-check with the official manual
XGI E004 — Abnormal RTC IC
Critical — power cycle required
CAUSE
Why does it occur?
Clock IC(RTC) error
REMEDY · Step by step
How to fix it?
Restart; contact service
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
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