How much does it cost to fix Saunier Duval error code 2.7bar?

Typical repair cost for the Saunier Duval 2.7bar fault is £80-150 including labour.

2.7bar High

Saunier Duval 2.7bar Fault Code

Q: What does the Saunier Duval 2.7bar fault code mean?

Your boiler's internal water pressure is currently too high, which means the system is holding more water than it is designed to manage safely.

Also written as 27BAR — same fault.

The Saunier Duval 2.7bar fault code means: your boiler's internal water pressure is currently too high, which means the system is holding more water than it is designed to manage safely.. It appears on 4 Saunier Duval models in our database.

Technical description: Upper water pressure (>2.7b)

Typical repair cost £80-150 (including labour)

DIY fix possible

Locate a radiator in your home with a bleed valve.Place a cloth or small container under the valve.Use a radiator key to slowly release air and then water until the pressure gauge on the front of the boiler drops back to between 1.0 and 1.5 bar.

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Saunier Duval models that show the 2.7bar fault code

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

Source

Saunier Duval 2.7bar 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