How do I clear or fix error E20?

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.

E20

Felicity inverter error E20

GFCI over Fault

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

E-CHO-SI3KS2

InverterFault

Also applies to:E-CHO-SI5KS2E-CHO-SI8KS2

What it means

GFCI over Fault — Ground Fault Circuit Interrupter (leakage current) over-protection.

Cause: Leakage (residual) current to ground exceeded the GFCI protection limit. The most common causes are moisture in PV connectors or damaged cable insulation creating a current path to ground.

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: E-CHO-SI3KS2-Operation-Manual.pdf, p.16 · E-CHO-SI5KS2-Operation-Manual.pdf · E-CHO-SI8KS2-Operation-Manual.pdf

Frequently asked questions

What does error E20 mean on a Felicity inverter?: E20 means: GFCI over Fault. Leakage (residual) current to ground exceeded the GFCI protection limit. The most common causes are moisture in PV connectors or damaged cable insulation creating a current path to ground.
Is error E20 a fault or a warning?: E20 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 E20?: 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 E-CHO-SI3KS2

All E-CHO-SI3KS2 codes All E-CHO-SI5KS2 codes All E-CHO-SI8KS2 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.