How much does it cost to fix Saunier Duval error code 14?

Typical repair cost for the Saunier Duval 14 fault is £120-£350 including labour.

14 High

Saunier Duval 14 Fault Code

Q: What does the Saunier Duval 14 fault code mean?

Your boiler has shut down because a temperature sensor has detected that the water inside is getting too hot, likely due to a circulation problem.

The Saunier Duval 14 fault code means: your boiler has shut down because a temperature sensor has detected that the water inside is getting too hot, likely due to a circulation problem.. It appears on 8 Saunier Duval models in our database.

Technical description: CTN2 > 97°C - pump will run

Typical repair cost £120-£350 (including labour)

DIY fix possible

Check that all radiator valves are fully open to allow water to flow.Check that the boiler pressure is between 1.0 and 1.5 bar on the gauge.Reset the boiler using the power switch to see if the fault clears.

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Saunier Duval models that show the 14 fault code

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

Source

Saunier Duval 14 fault code information on this page is sourced and cross-checked against the official Saunier Duval service / installation manuals for each affected model.

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