i currently have a vailant combi boiler which has run 10 radiators perfectly for tha last 9 years, i have recently built an extension which has 2 extra radiators. the plumber i used disconnected all the central heating when i first started and a couple of days ago reconnected the central heating i am now getting 10 radiators red hot and 2 cold and the plumber is telling me its the boiler, i have tried knocking all the hot radiators off to try and force the pump to pump to the cold radiators but to no avail.the radiators in question one is the nearest to the boiler the other is one off the new radiators upstairs, i think i am being ripped off by the plumber to the price of a new boiler.
central heating
- Thread starter bazza55
- Start date
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breezer
so do i.
you havent mentioed bleeding the rads, have you?
you havent mentioed bleeding the rads, have you?
As breezer says, check for air locks etc and also check that the l/sheilds are fully open and that any trv operating pin has not stuck down closed.Sponsored Links
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namsag
If you leave just the new one on and both valves are fully open( remove trv head if its a hot day) and it still does not heat up , it has possibly been teed into just the flow or just the return
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