PLCXGBVerified · sol.ls-electric.com
XGB 502 — Battery Voltage Falling
Warning — monitor
CAUSE
Why does it occur?
Battery voltage is falling
REMEDY · Step by step
How to fix it?
Replace battery at power-on status
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
Verified · sol.ls-electric.com
Open PDF ↗XGB Troubleshooting Manual
3.1 CPU Error Code List · p.41 · -