How much does it cost to fix Chaffoteaux error code A 36?

Typical repair cost for the Chaffoteaux A 36 fault is £150-300 including labour.

A 36 Emergency

Chaffoteaux A 36 Fault Code

Q: What does the Chaffoteaux A 36 fault code mean?

Your boiler has detected that the exhaust gases are becoming dangerously hot, so it has shut itself down to prevent damage or overheating.

Also written as A36 — same fault.

The Chaffoteaux A 36 fault code means: your boiler has detected that the exhaust gases are becoming dangerously hot, so it has shut itself down to prevent damage or overheating.. It appears on 1 Chaffoteaux model in our database.

Technical description: Flue pipe too high temperature

Typical repair cost £150-300 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Chaffoteaux models that show the A 36 fault code

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

Minima HE Repair: £150-300

Source

Chaffoteaux A 36 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