How much does it cost to fix Baxi error code 14?

Typical repair cost for the Baxi 14 fault is £120-£240 including labour.

14 High

Baxi 14 Fault Code

Q: What does the Baxi 14 fault code mean?

Your boiler is signalling that there is a fault with the primary zone's flow or return sensors, likely causing your central heating to stop working correctly.

The Baxi 14 fault code means: your boiler is signalling that there is a fault with the primary zone's flow or return sensors, likely causing your central heating to stop working correctly.. It appears on 7 Baxi models in our database.

Technical description: alternates with Zone 1 CH mode

Typical repair cost £120-£240 (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 14 fault code

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

Source

Baxi 14 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