10 Medium

Baxi 10 Fault Code

The Baxi 10 fault code means: your boiler is struggling to detect the temperature of the water coming from your taps, which means it cannot reliably provide hot water.. It appears on 2 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: Fault on Hot Water Sensor
Typical repair cost £120-220 (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 10 fault code

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

Source

Baxi 10 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