Medium
51 on Alpha E-Tec NXS

Your boiler is struggling to talk to its wireless control unit, which means it may not be receiving instructions to turn your heating or hot water on.

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 Nxs 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 if the batteries in your wireless room thermostat or programmer are flat and replace them if necessary.Turn the boiler off at the fused spur for 60 seconds, then turn it back on to force a communication reset.Ensure the wireless receiver unit near the boiler is not obstructed by large metal objects or electrical interference.

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