Low
P2 on Worcester Bosch Greenstar R29 40 HE

Your boiler is currently performing a brief startup check to ensure all internal systems are communicating correctly before it begins normal operation.

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

Part of the self-test sequence sequence when the appliance is switched on.

From this model's manual
Verified against the Worcester Bosch Greenstar 25he installation & service manual, page 104.
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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Avoid the next call-out bill

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