InverterS300Verification pending — cross-check with the official manual
S300 Main System Error Watch Dog — Main System Error Watch Dog
Trip — immediate stop
CAUSE
Why does it occur?
Occurs in the event of a software operation error.
REMEDY · Step by step
How to fix it?
- Inverter inspection is required
- Refer to the authorized automation service center information
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
CALLBACK
Request an expert callback
A 12-year automation/SI engineer responds directly. Reply within 1–3 business days.