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can anyone else help please i dont know how to increase my pump speed ,if it is possible at all,but on the front it has a slotted piece and it is angled at 10 to 4 so i am not sure if firstly that is the speed and secondly if it is ,is it on max. thanks

i closed one end on all rads apart from the dodgy two and nothing happened ,so i closed off the other end on all rads and still no heat to the two cold rads,can anyone shed any light on the problem please. Again i am not sure if you can change speed on your pump. thanks

this grundfos super selectric pump on the screw fix advert says it has 3 speeds ,do you know whereabouts on the pump to change the speed,maybe its that ? http://www.screwfix.com/prods/67637/Plumbing/Central-Heating-Pumps/Grundfos-15-60-Domestic-Circulating-Pump

cheers simon. yes i think the new rad fitted in the extension was just coonected to an existing one. I currently have a grundfos ups 15-60 pump not a grundig one as i posted in the first thread.Can these pumps still work and be less effective than when they are new and could i tell rather...

Thanks for the reply simon. One end will be suffice ,i wish i asked that last time it would have saved some of my skin on my knuckles :D I will close all upstairs rads off then open them a 1/4 of a turn and give that a go. Do you think it is a pump problem simon ,or could it be the...

Hello newbie here. i have regularly had a rad that needed bleeding and when i got a additional rad fitted that one barely gets warm even though the trv is set on 5,but recently both rads have gone completely cold.I have read a few threads on here beforehand to help me.I closed off all rads at...