BoilerFaultCodesYour boiler is failing to start up because an internal electrical fuse has blown and needs to be replaced.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Please wait, initialisation in progress. 24 V fuse blown. Replace fuse.
What causes this fault?
This fault occurs when an electrical surge or a short circuit within the boiler's internal components causes a thin safety fuse to blow. The most common reason is a failing part, such as a multi-way valve or internal sensor, drawing too much power and tripping the fuse to protect the main electronics.
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.
Gas Safe Register →Protect yourself from future repair bills
A boiler cover plan would cover faults like P2 — no call-out fees, no surprises.
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Worcester Bosch RD 532 Combi is discontinued — time for a new one?
Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
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