High
P2 on Worcester Bosch Worcester 25/30 HE

Your boiler is struggling to start up because a small internal fuse has likely blown, preventing the electronics from working correctly.

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.

What the manual says

Manufacturer manual

Please wait, initialisation in progress. 24 V fuse blown. Replace fuse.

Shared across the Greenstar R range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

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

P1View →P3View →

All 20 fault codes on the Worcester 25/30 HE

Seeing a different code? Every code this model can display, in one place.

A7A8ACb1C1C4C6d1d3E2E9EAF0F7FAFdLock-outP1P3

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