Low
358 on Worcester Bosch Greenstar 2000

Your boiler is automatically running a brief maintenance cycle to ensure the internal pump remains free and doesn't get stuck while not in use.

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.

Technical description

Anti-seizing functn. active

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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