Warning

W04

Grid anomaly.

2 Devices that report this code
IVEM8048-IIInverter↗ view on device
W04Grid anomaly.Warning
Description

Warning: Grid anomaly. Grid icon blinking.

Cause

Grid input is over voltage or over frequency.

Recommended fix

Check whether the input is overvoltage or overfrequency.

Source:IVEM8K-12K-II_compressed.pdf · page 42
T-REX-50KHP3G01Inverter↗ view on device
W04Battery 2 undervoltage alarm.Fault
Description

Battery 2 voltage is too low, the battery should be charged.

Source:T-REX-50KHP3G01-user-manual-.pdf · page 44

Compiled from official FelicityESS user manuals. Always consult your device manual and a qualified technician before performing repairs.