How do I fix Residual Current Fault on a FoxESS?

Check all DC connectors for moisture or damage. Inspect cable runs for pinch points or damage Then: Dry out any wet connectors. Re-test after connectors dry

FoxESS

Res Cur Fault

Residual Current Fault

Residual current exceeds the permitted threshold. Inverter disconnects.

Common causes

Moisture in DC cabling or connectorsDegraded cable insulationNearby RCD nuisance tripping

What to check

STEP 1

Check all DC connectors for moisture or damage. Inspect cable runs for pinch points or damage

STEP 2

Dry out any wet connectors. Re-test after connectors dry

Escalate if

No cabling fault found and fault persists — escalate

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More FoxESS fault codes

Grid Lost

Error 26

Grid Voltage Out of Range

Error 27

Grid Frequency Out of Range

Error 28

10-Minute Average Voltage Fault

Over Load

Inverter Overload