How much does it cost to fix Baxi error code 110 R?

Typical repair cost for the Baxi 110 R fault is £150-300 including labour.

110 R High

Baxi 110 R Fault Code

Q: What does the Baxi 110 R fault code mean?

Your boiler has detected that it is overheating and has shut itself down to prevent damage, likely because the water inside isn't circulating properly.

Also written as 110R — same fault.

The Baxi 110 R fault code means: your boiler has detected that it is overheating and has shut itself down to prevent damage, likely because the water inside isn't circulating properly.. It appears on 2 Baxi models in our database.

Technical description: Safety Thermostat Operated (pump fault)

Typical repair cost £150-300 (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 110 R fault code

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

Source

Baxi 110 R 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