How much does it cost to fix Chaffoteaux error code 03?

Typical repair cost for the Chaffoteaux 03 fault is £120-£350 including labour.

03 High

Chaffoteaux 03 Fault Code

Q: What does the Chaffoteaux 03 fault code mean?

Your boiler is failing to light the gas or isn't recognizing that a flame is present, meaning your heating and hot water will not work.

The Chaffoteaux 03 fault code means: your boiler is failing to light the gas or isn't recognizing that a flame is present, meaning your heating and hot water will not work.. It appears on 6 Chaffoteaux models in our database.

Technical description: No flame detection

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

DIY fix possible

Check if other gas appliances in your home are working to ensure gas is being suppliedCheck if your gas meter has credit (if using a pre-payment meter)Press the Reset button once to see if the boiler restarts

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Chaffoteaux models that show the 03 fault code

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

Source

Chaffoteaux 03 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