How much does it cost to fix Chaffoteaux error code E 37?

Typical repair cost for the Chaffoteaux E 37 fault is £200-450 including labour.

E 37 High

Chaffoteaux E 37 Fault Code

Q: What does the Chaffoteaux E 37 fault code mean?

Your boiler has lost the ability for its internal computer parts to 'talk' to each other, meaning it has shut down as a precaution to prevent unpredictable operation.

Also written as E37 — same fault.

The Chaffoteaux E 37 fault code means: your boiler has lost the ability for its internal computer parts to 'talk' to each other, meaning it has shut down as a precaution to prevent unpredictable operation.. It appears on 1 Chaffoteaux model in our database.

Technical description: Communication problem with the main PCB

Typical repair cost £200-450 (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 37 fault code

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

Minima HE Repair: £200-450

Source

Chaffoteaux E 37 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