BoilerFaultCodesYour boiler's internal memory has encountered a glitch, causing some of its important settings to reset themselves to the factory defaults.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Internal fault: Some parameters reset to factory settings due to EEPROM problem. Some parameters reset to default.
What causes this fault?
This fault occurs when the boiler's internal memory chip, or EEPROM, fails to communicate correctly with the main control board. It is typically caused by a minor electrical surge or hardware degradation that corrupts the stored configuration data. As a result, the boiler loses its specific operating instructions and defaults to factory settings as a safety precaution.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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