How do I clear or fix error 63?

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.

Felicity inverter error 63 (F63)

EPO Fault

Also displayed as F63 on some models.

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

T-REX-50KHP3G01

InverterFault

What it means

EPO Fault — Inverter emergency shutdown.

Cause: The emergency power off (EPO) input was triggered, commanding an immediate inverter shutdown.

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-25-50khp3g01-user-guide-en.pdf, p.48

Frequently asked questions

What does error 63 mean on a Felicity inverter?: 63 means: EPO Fault. The emergency power off (EPO) input was triggered, commanding an immediate inverter shutdown.
Is error 63 a fault or a warning?: 63 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 63?: 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.