mk1mexico Posted January 26, 2009 Report Posted January 26, 2009 I have one radiator in my house which refuses to work. Every other radiator in the house works fine and the valves are open both ends of them. (Valves also open on the duff one) The system is running at 1.7-2 bar. The copper pipes approaching the valves dont even get hot. Today i turned on the heating and isolated the radiator, i loosened the inlet valve off and water drained out, which got significantly more water as i opened the inlet valve, so i know thats ok. The water flow stopped when i isolated the outlet valve, which i guess is good as its effectively airlocking the radiator. I replaced the lost water in the system, with the valves under the boiler and got it back up to pressure, went to bleed the rad (it had lost around 1 litre) and water came straight out of the bleed nipple!!!!!!! How the fook can the boiler fill it back up but not with hot water like the other 8 rads in the house!!! Grrrrr Doing my head in. Just to add its the rad in my main bedroom so i need it aswell Help a chilly Graeme
the shonkster Posted January 26, 2009 Report Posted January 26, 2009 i have the same problem i even drained the hole system down and that did not work so i am stuck too i am just wondering if it has air in it still
bigdaz27 Posted January 26, 2009 Report Posted January 26, 2009 do you have thermostatic radiator valves
mk1mexico Posted January 26, 2009 Author Report Posted January 26, 2009 Cant have air in my system if it bleeds up ok?? Not sure what you mean by those valves bigdaz??
Retro-gone. Posted January 26, 2009 Report Posted January 26, 2009 the rad will be blocked, you need to shut the valve of at side of the rad, disconnect the rad, take the rad outside and run a hose pipe thro it, you will get all the crap out of it and jobs a gud un
bigdaz27 Posted January 26, 2009 Report Posted January 26, 2009 dose your radiator vavlve look somthing like this
mk1mexico Posted January 26, 2009 Author Report Posted January 26, 2009 Cheers Mr Glam will try that tomorrow, need it sorted so i can get my carpet ordered!! If i dont, sods law says the floorboards will have to come up
mk1mexico Posted January 26, 2009 Author Report Posted January 26, 2009 dose your radiator vavlve look somthing like this Yes similar, only on one end. On the other end its just a bare brass nipple type valve that needs pliers to turn it
bigdaz27 Posted January 26, 2009 Report Posted January 26, 2009 ok take the top of it they unscrew and theres a little pin get a pair of pliyers and very carfully wigle it up and down that should get her going
the shonkster Posted January 26, 2009 Report Posted January 26, 2009 ok tried that waited 30 mins still cold whats next please?
the shonkster Posted January 26, 2009 Report Posted January 26, 2009 yes done all that no air left is system just water comes out of bleed screw
marky4 Posted January 26, 2009 Report Posted January 26, 2009 ok take the top of it they unscrew and theres a little pin get a pair of pliyers and very carfully wigle it up and down that should get her going agree with the above, sounds like the thermostatic valve is stuck closed. Be carefull not to pull the pin up to far as it could come out followed by hot water but you might need to wiggle it up and down quite abit
the shonkster Posted January 26, 2009 Report Posted January 26, 2009 ok done all as above i will get new valve to fix problem cheers all
Smudger105e Posted January 26, 2009 Report Posted January 26, 2009 A smart tap on the side of the the valve with a 1/2lb hammer sometimes dislodges the stuck pin valve.
mk1mexico Posted January 26, 2009 Author Report Posted January 26, 2009 I cant unscrew the cap off mine Its similar but not exactly the same as the picture on the previous page. Iv tried as hard as i dare, feels like somethings going to snap
marky4 Posted January 26, 2009 Report Posted January 26, 2009 I cant unscrew the cap off mine Its similar but not exactly the same as the picture on the previous page. Iv tried as hard as i dare, feels like somethings going to snap might need a new valve then mate
Great 68 Posted January 27, 2009 Report Posted January 27, 2009 I would also give it a sharp tap with a hammer to the side of the valve. These valves always stick
peranapete Posted January 27, 2009 Report Posted January 27, 2009 Hello, by the sound of it you have a combination boiler. first of all you should put your pressure up to over 2 bar, between 2 and 3 is good. When bleeding any heating system your boiler should be OFF. If that fails, it then sounds like your radiators need balancing. the rad with the problem is more likley to be the last rad on the run. So you may have to turn down the rads just before the problem one. Try this for starters, if its still buggered then send me a PM. Hope this helps. Peter (ex-plumber)
mk1mexico Posted February 8, 2009 Author Report Posted February 8, 2009 Ok bit of an update, i have managed to get the thermostatic valve off (misunderstood you needed to turn the knurled nut beneath it) This revealed said pin. The pin only protrudes around 6-7mm from the valve and will push in and spring back happily enough?? Is this ok?? Maybe only moves a few mm though?? Havent had chance to get the rad off and flush it yet, I dont actually have a tap that will take my newly purchased hosepipe, they are all too big So that means a trip to my parents 15 miles away to flush it. Off to up it to 2-3 bar now see if it makes any difference. Fooking freezing in there
mk1mexico Posted February 8, 2009 Author Report Posted February 8, 2009 Ok i get to the boiler just now, and the whole pressure has disappeared on the guage Reset the boiler and waiting now, im hoping the pressure has gone because that valve was stuck
mk1mexico Posted February 8, 2009 Author Report Posted February 8, 2009 Way fookin hey its working Took the thermostatic valve off again and it just started warming up. Im going to leave it off whilst its working, i will fix it in the summer. Took me half hour to get warm finishing nights this morning. And were getting our first snow at the moment so it will be even colder tomorrow morning!!! DIY graeme
marky4 Posted February 9, 2009 Report Posted February 9, 2009 Ok i get to the boiler just now, and the whole pressure has disappeared on the guage Reset the boiler and waiting now, im hoping the pressure has gone because that valve was stuck you lost all the pressure because you over pressurised the system the boiler has a relief valve that will let water out at 3 bar ish should be 1-1/12 bar when cold glad you got it sorted
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