BoilerFaultCodesYour boiler's main control board has encountered an internal electronic error, meaning the 'brain' of the system is unable to function correctly.
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 (PCB)
What causes this fault?
This fault occurs when the boiler's main control board suffers a critical electronic failure, preventing it from safely managing the heating process. The most common reasons include a power surge that has damaged the delicate circuitry or components reaching the end of their operational life due to heat stress over several years.
This fault is slightly more common during winter or stormy weather, as power fluctuations and surges caused by grid instability can trip the electronic components on the board.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
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A boiler cover plan would cover faults like E07 — no call-out fees, no surprises.
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