Medium
E.02 – .48 on Baxi Assure

Your boiler is having trouble communicating with your external thermostat or smart home controller.

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.

Technical description

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

DIY fix possible

Check that your wireless thermostat or receiver has power and fresh batteries.Try moving the wireless thermostat closer to the boiler to re-establish a connection.Refer to your thermostat manual to perform a 're-pairing' or 'linking' sequence.

Find a Gas Safe engineer
Search the official register →

Related guides you might find useful

Boiler won't turn on — 9-step checklist

Work through these before the call-out.

Read →

Yellow or orange flame — CO safety

Safety-critical — turn off, read this.

Read →

Is boiler cover worth it?

Break-even maths on monthly cover.

Read →