Low
12 on Alpha Evoke 10 / 18

Your boiler is having trouble measuring the temperature of the water coming into the system for your hot taps, which may cause issues with water temperature stability.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description

Optional DHW inlet sensor resistance out of range

Engineer required

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

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Related fault codes

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