central heating problem driving me crazy. i have wall hung system boiler with indyrect cylinder. all upstairs 4 rads get hot. there are two rads in kitchen on drops which get hot. there are 4 rad down stairs which are on a run under concrete floor. the 1st one gets hot 2nd and 3rd dont really. hot at top cool at bottom. 4th one gets hot. have had sludge remover done. no change. might b air locked in pipe wk so had auto matic air vents in cylinder cupboard and two high points for air to work its way to. still no change. finally had 2nd and 3rd rads replaced with new ones and pipe work brought down on drops to them. still no change but little better. at total loss. need help. is the pump not powerful enough? pump does work.
Central heating Problem
- Thread starter syncmaster
- Start date
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tryed doing that to push the heat round. but not much joy.the flow got hot but return just off cold. with rad s only getting hot half way down. new vlaves have been fitted to allrads still did the same. at real loss with this system.
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that what i thought.it must be air locking up some where but with out ripping up all floor boards. must admit when looking under there did not look great job.
on the drops to the rads that dont work very well they are 15mm. they then go up stairs and T into 15mm.
all other radiators are fine apart from these two . even before they where on drops. all rads up stairs work fine. would fitting bigger power pump help or would that just cause it to pump over.
suspose omly way to fix it would be to find al pipe runs and see if any dodgy pipe work. up stairs not too much of problem but the pipes under the conrete would be.
looks like will be ripping them up then.
yeah
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