BoilerFaultCodesTechnical description
EEPROM error. Electronics defective
What causes this fault?
This fault occurs when the boiler's main control board experiences a digital memory failure, meaning it can no longer access the essential instructions needed to run safely. The most common reason is a physical hardware failure within the circuitry of the Printed Circuit Board (PCB), often caused by long-term wear or an electrical surge. Because the 'brain' of the boiler can no longer verify its own settings, it shuts down the system entirely to prevent any unsafe operation.
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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