How do I fix Inverter / ARM EEPROM Fault on a FoxESS?

Power cycle the inverter. Check if fault clears Then: Update firmware via Fox ESS app if update is available

FoxESS

EEPROM Fault

Inverter / ARM EEPROM Fault

Non-volatile memory read/write fault in the inverter control board.

Common causes

Component failure on control boardPower disruption during a write cycle

What to check

STEP 1

Power cycle the inverter. Check if fault clears

STEP 2

Update firmware via Fox ESS app if update is available

Escalate if

Fault persists after power cycle — control board failure, escalate to Fox ESS UK support

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