Medium
265 on Worcester Bosch Greenstar 8000 Style

Your boiler is struggling because it is producing more heat than your home is currently ready to absorb, which usually happens when the internal flow of water is blocked or restricted.

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

Heat demand lower than energy supplied

Engineer required

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

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