How do I clear or fix error W12?

Power down the inverter, wait 5 minutes for capacitors to discharge, then restart. If the fault recurs immediately or repeatedly, record the exact code and contact your installer or the manufacturer's service line.

W12

Felicity inverter error W12

Load Overload Alarm

Fault — the inverter cuts its output and the red LED stays solid until the fault is cleared.

T-REX-50KHP3G01

InverterFault

What it means

Load Overload Alarm — The load is overloaded, and the load should be reduced.

Cause: The connected load has climbed above the inverter's rated output — the warning stage before the overload fault tiers cut the output; the load should be reduced.

How to fix it

Power down the inverter, wait 5 minutes for capacitors to discharge, then restart.
If the fault recurs immediately or repeatedly, record the exact code and contact your installer or the manufacturer's service line.

Source: T-REX-50KHP3G01-user-manual-.pdf, p.45

Frequently asked questions

What does error W12 mean on a Felicity inverter?: W12 means: Load Overload Alarm. The connected load has climbed above the inverter's rated output — the warning stage before the overload fault tiers cut the output; the load should be reduced.
Is error W12 a fault or a warning?: W12 is a fault code: the inverter cuts its output and the red LED stays solid until it is cleared.
How do I clear or fix error W12?: Power down the inverter, wait 5 minutes for capacitors to discharge, then restart. If the fault recurs immediately or repeatedly, record the exact code and contact your installer or the manufacturer's service line.

Related error codes

Other codes on the T-REX-50KHP3G01

All T-REX-50KHP3G01 codes

Prefer the full written guide? Read the complete Felicity inverter error-code guide

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