Medium
55 -- 55 on Worcester Bosch Greenstar 25HE

Your boiler is currently running at its absolute maximum capacity because it has been set to a special testing mode, rather than operating normally to heat your home.

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

Continuous working at the maximum power (Special programme visualisation)

Engineer required

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

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