High
P1, P2, P3 on Worcester Bosch Greenstar 25HE

Your boiler is struggling to start up correctly and keeps getting stuck in a repeated reset loop, preventing it from heating your home.

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

Boiler indicates P1, P2, P3 at start-up and then restarts with P1,...

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

EAView →E9View →

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