Medium
127 on Baxi Suprima 60

Your boiler has failed to heat the water in your cylinder to a high enough temperature to kill off potentially harmful bacteria.

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

Legionella (cause of Legionnaires’ disease) protection temperature not reached

Engineer required

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

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