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Radiators up stairs were red hot so gagged back outlets to direct more flow downstairs the downstairs feed pipe got real hot rads only mildly warm but upstairs lost some heat( gagged back outlet to balance system) I'm at a right loss as it seems system can't cope yet pumps new(off eBay brand...

Thanks for reply Tony,I tried that initially with no luck,at minute I've had downstairs hot with upstairs rads off and I've opened three out of four upstairs now and downstairs now struggling,balancing I shut off all rads opened inlets and only opened out let's quarter to half a turn this didnt...

Well the radiators downstairs are now hot,and in the process of opening up one at a time of the upstairs rads to see when I lose heat downstairs,got a feeling I will at sometime :?

flushing was just with hose in garden and mains pressure,as it was just the two rads downstairs that wasn't working,I have hot water but must admit when I have hot water and heating selected sometimes the radiators don't get hot even upstairs (is hat an issue with 3 way valve?)' The radiators...

All radiators are hot up stairs I've shut them off left heating on to just downstairs and the pipes are red hot radiator only just noticably warming,even though I flushed radiators in garden with hose pipe and mains pressure could I still have an issue with radiators,am I looking at buying new...

Hi,firstly a bit of history,I have a back boiler which works fine however I'm struggling with downstairs radiators getting remotely warm,to date I have replaced the pump as before I had tried balancing system to no avail and now have removed both radiators downstairs as possible sludge may be...

Thanks John,it doesn't always but now and again the passage can be wet resulting from it leaking

I have a aqualisa shower and both times it's been leaking from the shower head its been a new cartridge,bought of eBay,with three teenage girls the shower gets plenty of use so probably why it's had two in 7 years

Yes it's 15mm copper pipe ,it's enclosed passage way pipe comes out of ceiling close to wall it has 90 degree bend in it facing their wall but its way above head height and condensate runs down window/wall,I thought being possibly acidic it wouldn't be allowed to terminate so high up and just...

Just a quick question our neighbours have I believe a condensate boiler as a drain line has appeared in the shared passage way between our houses,the drain is above head height and what comes out runs down their window and wall,if this is is this illegal as I know the condensate can be acidic...

Thanks for replys tried all above am now thinking the radiators are sludged up as get heat to radiators but one gets Luke warm in areas and every time heating is on its intermittent which get any kind of warmth,the pipes are hot to radiator but radiators not getting hot,check valves all ok,bled...

My back boiler fired up then went off again when heating selected only,then for a time trying heating water then both it wouldn't ,now it's running on just heating but as I type this it's gone off again after running for only a minute...........the control thermostats quite high

I have a vented heating system with a back boiler,I have replaced the main pump and isolation valves after draining system,I turned off electricity to replace pump.i have refitted pump and new isolation valves(other didn't seal ) and refilled system and bled radiators however when I select...

Thanks for all your help appreciate you taking the time out and reply,I'll go for pump change........wish me luck!lol

Thanks for the reply,today I've turned off upstairs radiators downstairs got hot,then opened stairs downstairs went cool I balanced radiators up stairs and downstairs is still cool,so maybe pump is knackered as you said,just when I took off carp I couldn't stop it spinning but like you said...

Checked tank in loft it's very Luke warm not cold so to speak,pump speed is onhigh (3)as it has been for a while,I have one radiator permantly isolated due to fridge backs on to it will this not help ?others downstairs with upstairs off are warm but not hot don't seem to be cold...

Speed has been on three for quite a while

Thanks for reply ill check that lot out,I have turned up stairs off and downstairs ones hot but other only warm,I'll go check what you suggest

After reading some sticky topics I removed centre screw from pump ran pump and tried to stop rotation with pressure,it couldn't be stopped so I take pump is good,I've switched off rads upstairs one downstairs is getting war miss but next in line still like warm........I have one rad in kitchen...

Over the last few weeks I've struggled with getting the downstairs radiators hot,the pump is turning (it's a grundfos 15-50 pump) I've checked the three way valve ,that is operating as it should,can the pump still be faulty?the only time I get any heat in the downstairs radiator is if I select...