Medium
E.02 – .48 on Baxi 400 Combi (range)

Your boiler is having trouble communicating with your external thermostat or wireless controls, preventing your heating from turning on correctly.

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 installedEnsure the external control unit is powered on and within range of the boilerTry resetting the boiler and following the manufacturer's instructions to re-pair the device

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