Had to have an Auto Vent Valve changed today so system was drained down from the boiler, as this is higher than all the downstairs radiators I am assuming it was only the upstairs part of the system that drained?
Anyhow, valve was changed and system refilled, started up on Hot Water only all working well, some noise from air in system through boiler but went away.
Moved to Central Heating, no trips and all radiators are piping hot apart from 1 downstairs, not even the feed pipe has any heat in it.
Tried to bleed but its full of water not air.
Any ideas of issue and things to try to solve problem please.
Anyhow, valve was changed and system refilled, started up on Hot Water only all working well, some noise from air in system through boiler but went away.
Moved to Central Heating, no trips and all radiators are piping hot apart from 1 downstairs, not even the feed pipe has any heat in it.
Tried to bleed but its full of water not air.
Any ideas of issue and things to try to solve problem please.
