Low
Green/Red - blinking on Worcester Bosch Greenstar 8000 Style

Your boiler has detected a minor fluctuation in the water circulation system, but it is still operating safely and does not require immediate intervention.

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

Warning mode (pump operating in an abnormal condition, no risk for the pump functionality).

Engineer required

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

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