Medium
51 on Alpha Intec S

Your boiler has lost its wireless connection to your room thermostat, meaning it cannot receive signals to turn the heating on or off.

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

Climatic RF communication fault

From this model's manual
Verified against the Alpha Intec S installation & service manual, page 40.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

Check if your thermostat display is blank and replace its batteries if needed.Turn the power to the boiler off at the fused spur for 60 seconds, then turn it back on to reset the connection.Refer to your thermostat manual to re-pair the device to the boiler receiver unit.

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