What the manual says
Manufacturer manualWATER PRESSURE TOO HIGH - Leaks from supply cock, Expansion tank defective, The plant has been filled when cold at an excessively high pressure
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.
Avoid the next call-out bill
A cover plan would handle faults like ER 11: no call-out fees, no surprise bills.
Affiliate links. We may earn a commission at no extra cost to you.
All 14 fault codes on the Xignal
Seeing a different code? Every code this model can display, in one place.