How much does it cost to fix Chaffoteaux error code 30?

Typical repair cost for the Chaffoteaux 30 fault is £150-£350 including labour.

30 High

Chaffoteaux 30 Fault Code

Q: What does the Chaffoteaux 30 fault code mean?

Your boiler has stopped working because water is not moving around the internal system efficiently enough to prevent it from overheating.

The Chaffoteaux 30 fault code means: your boiler has stopped working because water is not moving around the internal system efficiently enough to prevent it from overheating.. It appears on 3 Chaffoteaux models in our database.

Technical description: Primary water circulation defect

Typical repair cost £150-£350 (including labour)

DIY fix possible

Check that the boiler pressure is between 1.0 and 1.5 bar on the gaugeEnsure all radiator valves are fully openCheck if the pump is making any unusual grinding or humming noisesTry restarting the boiler using the reset button

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Chaffoteaux models that show the 30 fault code

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

Source

Chaffoteaux 30 fault code information on this page is sourced and cross-checked against the official Chaffoteaux service / installation manuals for each affected model.

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