BoilerFaultCodesYour boiler's internal memory has encountered an error and has reverted to its factory default settings, meaning it needs reconfiguring to work with your heating system.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Reset all parameters
What causes this fault?
This fault occurs when the boiler's internal computer suffers a data corruption or a temporary power fluctuation that wipes its stored memory. Effectively, the boiler has forgotten how to communicate with your specific heating setup and has reverted to its original factory settings for safety. The most common reason is a failing primary circuit board or a loose connection with the small 'code plug' that stores the unit's identity.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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A boiler cover plan would cover faults like 8.E — no call-out fees, no surprises.
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Could it be time for a new boiler?
If repair costs are adding up, a new energy-efficient boiler could be the smarter long-term choice.
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