E 07 High

Chaffoteaux E 07 Fault Code

Also written as E07 — same fault.

The Chaffoteaux E 07 fault code means: your boiler is struggling because water is not flowing around your heating system properly to distribute warmth.. It appears on 1 Chaffoteaux model in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: No water circulation in primary circuit
Typical repair cost £120-250 (including labour)

DIY fix possible

Check your boiler pressure gauge to ensure it is between 1 and 1.5 barIf the pressure is low, locate the filling loop and add water until it reaches the correct rangeOnce pressure is corrected, restart the boiler by holding the reset button

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Chaffoteaux models that show the E 07 fault code

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

Source

Chaffoteaux E 07 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