E8Fault

Felicity inverter error E8

Input Curr Over

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

It means the same on every affected model — find yours for the exact fix:

E-CHO-SI3KS2

InverterFault

What it means

Input Curr Over — PV input current over the allowed range.

Cause: A fault has been detected in the PV input stage — usually a short, ground fault, or isolation failure between the PV array and the inverter chassis. Wet connectors, damaged cable insulation, or moisture in a junction box are common causes.

How to fix it

  1. Disconnect the PV strings and measure insulation resistance between PV+ and ground, PV- and ground, and PV+ to PV-.
  2. Any resistance below 1 MΩ indicates moisture or damaged insulation.
  3. Inspect MC4 connectors for water ingress.
  4. Reconnect each string one at a time to isolate the faulty string.

Source: E-CHO-SI3KS2-Operation-Manual.pdf, p.16

E-CHO-SI5KS2

InverterFault

Also applies to:E-CHO-SI8KS2

What it means

Input Curr Over

Cause: The PV input current exceeded the inverter's allowed input range: the array is delivering more current than the input stage is rated for, typically from too many parallel strings or a brief over-irradiance spike.

How to fix it

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

Source: E-CHO-SI5KS2-Operation-Manual.pdf · E-CHO-SI8KS2-Operation-Manual.pdf

Frequently asked questions

What does error E8 mean on a Felicity inverter?

E8 means: Input Curr Over. A fault has been detected in the PV input stage — usually a short, ground fault, or isolation failure between the PV array and the inverter chassis. Wet connectors, damaged cable insulation, or moisture in a junction box are common causes.

Is error E8 a fault or a warning?

E8 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 E8?

Disconnect the PV strings and measure insulation resistance between PV+ and ground, PV- and ground, and PV+ to PV-. Any resistance below 1 MΩ indicates moisture or damaged insulation. The exact steps for each affected model are listed on this page.

Related error codes

Other codes on the E-CHO-SI3KS2

E8 is in the "Fault" class on the E-CHO-SI3KS2: 32 of the 32 codes documented for it.

All E-CHO-SI3KS2 codes

Other codes on the E-CHO-SI5KS2

E8 is in the "Fault" class on the E-CHO-SI5KS2: 32 of the 32 codes documented for it.

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.