Low
12 on Alpha Evoke

Your boiler is having trouble reading the temperature of the cold water coming into the system, which may cause your hot water to fluctuate in temperature.

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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