High
P1 on Worcester Bosch Worcester 25/30 HE

Your boiler is struggling to start up because a small internal fuse has blown, meaning the main control board cannot send power to the parts it needs to run.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 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.

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Related fault codes

P2View →P3View →

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