Medium
ER 11 on Ferroli Xignal

Your boiler has detected that the water pressure inside the heating system is too high and has shut itself down to prevent damage.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Book a service

This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

What the manual says

Manufacturer manual

WATER PRESSURE TOO HIGH - Leaks from supply cock, Expansion tank defective, The plant has been filled when cold at an excessively high pressure

From this model's manual
Verified against the Ferroli Xignal installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

Locate a radiator in your home, preferably upstairs.Place a cloth and a bowl under the radiator bleed valve.Slowly open the valve to release water until the pressure gauge on the front of your boiler reads between 1.0 and 1.5 bar.Close the valve tightly and check for leaks.

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