Low
358 on Worcester Bosch Greenstar i

Your boiler is performing an automatic 'exercise' routine to keep its internal parts moving smoothly and prevent them from getting stuck, which is a normal maintenance feature.

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

Three way valve kick. If the 3-way valve hasn't moved in up to 48 hours, the valve will operate once to prevent seizure.

Engineer required

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

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