BoilerFaultCodesYour boiler has lost power to its internal control board because a protective fuse has blown, meaning the system cannot run.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: ogress. 24 V fuse blown. Replace fuse. (Incomplete description from text block)
What causes this fault?
This fault occurs when an electrical surge or a short circuit within the boiler's internal components causes a protective fuse to pop. The most common reason is a failing internal part, such as a pump or valve, drawing too much power and blowing the fuse to prevent further damage to the main control 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 P3 — no call-out fees, no surprises.
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