How do I clear or fix error W13?

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.

W13

Felicity inverter error W13

DC lightning protection 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

DC lightning protection alarm — If the DC lightning protector is abnormal, check whether the lightning protector is abnormal.

Cause: The DC-side surge (lightning) protector is reporting an abnormal state — these modules commonly degrade after absorbing a surge and need to be checked.

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 W13 mean on a Felicity inverter?: W13 means: DC lightning protection alarm. The DC-side surge (lightning) protector is reporting an abnormal state — these modules commonly degrade after absorbing a surge and need to be checked.
Is error W13 a fault or a warning?: W13 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 W13?: 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.