How much does it cost to fix Chaffoteaux error code E 09?

Typical repair cost for the Chaffoteaux E 09 fault is £120-220 including labour.

E 09 High

Chaffoteaux E 09 Fault Code

Q: What does the Chaffoteaux E 09 fault code mean?

Your boiler has lost the signal from the sensor that monitors the temperature of your hot water, which means it will likely stop heating your water until the connection is restored.

Also written as E09 — same fault.

The Chaffoteaux E 09 fault code means: your boiler has lost the signal from the sensor that monitors the temperature of your hot water, which means it will likely stop heating your water until the connection is restored.. It appears on 1 Chaffoteaux model in our database.

Technical description: DHW sensor open circuit

Typical repair cost £120-220 (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 E 09 fault code

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

Minima HE Repair: £120-220

Source

Chaffoteaux E 09 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