E.02.47 Medium

Baxi E.02.47 Fault Code

Also written as E0247 — same fault.

The Baxi E.02.47 fault code means: your boiler is having trouble communicating with an external control, such as a smart thermostat or a weather sensor, and is struggling to receive instructions on when to turn on.. It appears on 6 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: Connection to external device unsuccessful
Typical repair cost £100-250 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Baxi models that show the E.02.47 fault code

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

Source

Baxi E.02.47 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 7 July 2026