Fault

W11

Under frequency and rated alarm.

1 Devices that report this code
T-REX-50KHP3G01Inverter↗ view on device
W11Under frequency and rated alarm.Fault
Description

The frequency is too low, the inverter increases the power.

Source:T-REX-50KHP3G01-user-manual-.pdf · page 45

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