E11 High

Heatline E11 Fault Code

The Heatline E11 fault code means: your boiler has stopped working because water is not moving through the system properly, which is causing the unit to get too hot too quickly.. It appears on 2 Heatline models 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: Pump circulation fault: Insufficient water movement detected or primary flow and return temperature difference is too high.
Typical repair cost £180-350 (including labour)

DIY fix possible

Check that your boiler pressure is between 1.0 and 1.5 bar on the gauge.Ensure all radiator valves are fully open to allow water to flow.Check if any radiators need bleeding to remove trapped air.

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Heatline models that show the E11 fault code

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

Source

Heatline E11 fault code information on this page is sourced and cross-checked against the official Heatline service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026