Low
Pump antiseize on Worcester Bosch Greenstar 30si

Your boiler is performing a routine maintenance check to ensure your water pump stays in good working condition.

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

Pump run 5 seconds every 24hrs

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

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