How much does it cost to fix Chaffoteaux error code 8.1?

Typical repair cost for the Chaffoteaux 8.1 fault is £100-280 including labour.

8.1 High

Chaffoteaux 8.1 Fault Code

Q: What does the Chaffoteaux 8.1 fault code mean?

Your boiler is unable to start the pilot flame, which means it cannot provide any heating or hot water until the ignition process is successful.

Also written as 81 — same fault.

The Chaffoteaux 8.1 fault code means: your boiler is unable to start the pilot flame, which means it cannot provide any heating or hot water until the ignition process is successful.. It appears on 3 Chaffoteaux models in our database.

Technical description: Pilot does not light

Typical repair cost £100-280 (including labour)

DIY fix possible

Check if your gas supply is turned on and other gas appliances are workingPress the reset button once to try and restart the ignition sequenceEnsure there is credit on your pre-payment gas meter

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Chaffoteaux models that show the 8.1 fault code

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

Source

Chaffoteaux 8.1 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