Fault

51

INV soft start failure.

2 Devices that report this code
IVGM5KL-P1G1Inverter↗ view on device
51INV soft start failure.Fault
Description

Inverter soft start failure.

Recommended fix

1. Restart the system 2~3 times; 2. if the fault still exists, please contact us for help.

Source:Felicitysolar IVGM Series Hybrid inverter Instruction Manual.pdf · page 54
T-REX-3KLP1G01Inverter↗ view on device
51BMS doesn't allow inverter to discharge battery.Fault
Description

BMS doesn't allow inverter to discharge battery.

Recommended fix

Restart the unit, if the error persists, contact the repair center.

Source:T-REX-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 37T-REX-3_3.6_4_4.6_5_6KLP1G01-hybrid-inverter-user-guide-English.pdf · page 39

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