What does the Heatline E11 fault code mean?

Your boiler has stopped working because water is not flowing through the system correctly, which is causing it to overheat.

How much does it cost to fix Heatline error code E11?

Typical repair cost for the Heatline E11 fault is £180-450 including labour.

Check that the boiler pressure is between 1.0 and 1.5 bar on the gauge.

Pump circulation fault: Insufficient water movement detected or primary flow and return temperature difference is too high.

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Each noise points to a different fault.

Sludge build-up — needs flushing, not bleeding.

Lockout fault with a reset-needed pattern.