I had the 3 way valve replaced by a plumber, and every time the heating or water fires up the pipes vibrate, like water hammer (ie for about 1 second). The plumber came back, replaced the valve again, but it is still bad.
I have tried to bleed the system, in case there is an airlock. If I bleed the highest radiator with the heating OFF, the radiator sucks air into the system.
If I bleed a radiator with the heating ON, water comes out of the radiator.
Can anyone help?
I have tried to bleed the system, in case there is an airlock. If I bleed the highest radiator with the heating OFF, the radiator sucks air into the system.
If I bleed a radiator with the heating ON, water comes out of the radiator.
Can anyone help?