I\\\'ve been trying to refill my sister\\\'s central heating. Everytime a radiator is drained, the water is lost from the system.
Checked the header tank and it was dry, so fixed that, but still the system is not refilling from the tank.
I disconnected a radiator and drained down the water from the system (keeping the radiator valves closed to save the water that was still in them from being lost too) and the header tank drained.
I replaced the radiator which only filled once I opened up an upstairs radiator. The system is now filled at ground floor level, but all the upstairs radiators are full of air (probably the top 3/4s).
I\\\'ve checked the bleed valve in the airing cupboard and there\\\'s no air coming out of that and I made sure the motorised valve was open.
Any ideas anyone?
Checked the header tank and it was dry, so fixed that, but still the system is not refilling from the tank.
I disconnected a radiator and drained down the water from the system (keeping the radiator valves closed to save the water that was still in them from being lost too) and the header tank drained.
I replaced the radiator which only filled once I opened up an upstairs radiator. The system is now filled at ground floor level, but all the upstairs radiators are full of air (probably the top 3/4s).
I\\\'ve checked the bleed valve in the airing cupboard and there\\\'s no air coming out of that and I made sure the motorised valve was open.
Any ideas anyone?