E.02 – .48 Medium

Baxi E.02 – .48 Fault Code

Also written as E0248 — same fault.

The Baxi E.02 – .48 fault code means: your boiler is having trouble talking to your wireless thermostat or smart controller, meaning it doesn't know when to turn the heating on.. It appears on 24 Baxi models in our database.

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.

What causes the Baxi E.02 – .48 fault?

This fault occurs when the boiler's internal computer loses its digital connection with your wireless thermostat or smart hub. The most common reason is a simple loss of signal between the devices, often caused by dead batteries or electrical interference from other household gadgets.

Typical repair cost £0-120 (including labour)

DIY fix possible

Check the batteries in your thermostat or wall controller and replace them if necessaryMove your wireless thermostat closer to the boiler to see if it reconnectsPress and hold the pairing button on the receiver box near the boiler to re-establish the connection

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Baxi models that show the E.02 – .48 fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Baxi E.02 – .48 fault code information on this page is sourced and cross-checked against the official Baxi service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026