hi can anyone help please...radiators were cold at top so bled them...heard hissing and thought they were ok then all went cold and found out i should have turned heating off before bleeding...any help please ?
hi,thanks...not combi, ex council house with tank in bedroom...fairly old system but was working ok till bled radiators. heard hissing from them and just hot at bottom on some...did it with heating turned on...
assuming you have 2 header tanks - 1 for hot water and a smaller one for the central heating (these two probably in the loft)
the smaller one is the central heating one. go and have a look inside it and check its got water in it...slightly press the ball valve and check water comes out
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