Medium
75 on Alpha Evoke

Your boiler is struggling to read its own temperature because one of its internal monitoring sensors is likely faulty or disconnected.

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

Possible failure of one or both sensors

From this model's manual
Verified against the Alpha Evoke installation & service manual, page 48.
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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