How much does it cost to fix Chaffoteaux error code E 27?

Typical repair cost for the Chaffoteaux E 27 fault is £150-350 including labour.

E 27 High

Chaffoteaux E 27 Fault Code

Q: What does the Chaffoteaux E 27 fault code mean?

Your boiler is having difficulty communicating with its hot water storage tank, which means your heating or hot water system has likely stopped working correctly.

Also written as E27 — same fault.

The Chaffoteaux E 27 fault code means: your boiler is having difficulty communicating with its hot water storage tank, which means your heating or hot water system has likely stopped working correctly.. It appears on 1 Chaffoteaux model in our database.

Technical description: Tank fault warning

Typical repair cost £150-350 (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 27 fault code

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

Minima HE Repair: £150-350

Source

Chaffoteaux E 27 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