Medium
2 05 on Ariston Challenger 80E

Your boiler is having trouble reading the temperature of the water used for your taps and shower because a sensor connection is interrupted.

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

DHW In Probe Open Circuit (Solare temp. probe)

Engineer required

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

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