Medium
12 on Alpha Evoke NX

Your boiler is having trouble measuring the temperature of the cold water entering the system, which can prevent your hot water from reaching the right temperature.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Book a service

This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

What the manual says

Manufacturer manual

DHW inlet sensor fault — optional DHW inlet sensor resistance out of range

From this model's manual
Verified against the Alpha Evoke Nx installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

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

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