Medium
51 on Alpha E-Tec S

Your boiler is temporarily unable to communicate with its wireless 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 E Tec S installation & service manual, page 50.
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 that your wireless thermostat has fresh batteries installed.Ensure the thermostat is within range of the boiler and has not been moved behind thick walls or metal objects.Follow the manufacturer's manual to perform a re-pairing process between the thermostat and the boiler receiver.

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