BoilerFaultCodesYour boiler's internal electrical circuit has lost power because a small safety fuse has blown, preventing the system from starting up.
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 small safety fuse to blow. The most common reason is a failing internal component, such as a sensor or the main pump, drawing too much power and triggering the fuse to protect the expensive control board. It acts like a household trip switch, cutting power instantly to prevent further electrical damage.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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