BoilerFaultCodesTechnical description
EEPROM faulty: Electronics defective
What causes this fault?
This fault occurs when the main control board suffers a hardware failure, specifically within the memory chip that stores the boiler's settings. It is usually caused by gradual wear of the electronic components or a sudden electrical surge that corrupts the internal software instructions. Because the boiler can no longer verify its own safety and operational data, it shuts down as a 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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