Medium
80 on Unical Alkon C 28 HE

Your boiler's internal control panel (the Regolafacile) has detected a fault with its own built-in temperature sensor, meaning it cannot accurately manage the heating settings.

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

Regolafacile Internal Sensor

From this model's manual
Verified against the Unical Alkon C 28 He installation & service manual, page 43.
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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