Low
P1 on Worcester Bosch Greenstar 30HE

Your boiler is simply performing a routine startup check and will usually begin operating normally again after a few moments.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

What the manual says

Manufacturer manual

Please wait, initialisation in progress.

From this model's manual
Verified against the Worcester Bosch Greenstar 30he installation & service manual, page 45.
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 fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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