Medium
E.02 – .48 on Baxi Suprima 50

Your boiler is having trouble communicating with your thermostat or external programmer, meaning it cannot receive the signal to turn on.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

Technical description

Configuration to external device unsuccessful – check pairing to external device.

DIY fix possible

Check that your wireless thermostat has fresh batteries installed.Ensure the thermostat is within signal range of the boiler and has not been moved too far away.Turn the boiler power off and back on at the fused spur switch to attempt a reconnection.

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