Medium
7 + on Biasi Antares System

Your boiler is struggling to accurately measure the temperature of your hot water tank, which may prevent your water from heating up correctly.

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

D.H.W. NTC probe failure / Hot water tank sensor failure.

Engineer required

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

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