Medium
1. on Worcester Bosch Greenstar R29 40 HE

Your boiler is currently operating at its lowest possible power setting, which may prevent it from heating your home or water effectively.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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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

min. rated heat output

Engineer required

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

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