Medium
2.7A on Worcester Bosch Greenstar Heatslave II

Your boiler's blue light is displaying a status code that indicates a mismatch or error in your boiler's internal configuration settings.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Book a service

This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

Technical description

Demand/fault LED (blue light) activation - O = The blue light will only operate as a flashing fault alert; 1 = The blue light will operate as a boiler operation and fault alert.

Engineer required

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

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Related fault codes

2.7AView →

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