Medium
127 on Baxi Suprima 80

Your boiler has failed to heat your water tank to a high enough temperature to safely kill off any potential 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

DIY fix possible

Check that your hot water cylinder thermostat is not turned down too lowEnsure your central heating programmer is set to allow the hot water to run for at least an hourPress the reset button on the boiler control panel

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Related fault codes

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