BoilerFaultCodesTechnical description
EEPROM (Electrically Erasable Programmable Read-Only Memory) error
What causes this fault?
This fault occurs when the boiler's central control board suffers an internal memory failure, meaning it can no longer store or read the vital settings needed to operate safely. It is typically caused by the steady degradation of electronic components over time or a sudden electrical surge that corrupts the board's permanent memory. Because the boiler no longer knows its own configuration, it shuts down immediately as a safety precaution.
Engineer required
This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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