2007-12-20 09:30:58 · 9 answers · asked by hemitanna 2 in Home & Garden ➔ Do It Yourself (DIY)
I have turned it up on the valve and know it does work as occasionally and randomly it does warm up a bit but never gets as hot as the rest or for long enough to heat the room.
2007-12-20 09:44:51 · update #1
Have tried turning off all other rads in the house and the "cold" rad got hot, but then when i went round as suggested and turned all the others on half again, the "cold" went cool again! Thanks everyone for help so far but would appreciate any other tips!
2007-12-21 22:27:15 · update #2
Sounds like somebody has teed off from another radiator, follow the pipes back if you can, if they are teed in from another radiator, this is the problem, otherwise it is a circulation problem, possibly a blockage.
2007-12-24 02:39:11 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Each radiator has 2 valves, a Control Valve and a Lockshield Valve. The objective of the Lockshield Valve ( assuming all the other radiators Control valves are open, is to 'proportion' the water flow between the radiators. So, what you must do is to open the Control Valve fully on your 'cold' radiator, then open the Lockshield on that rad say 1/2 a turn, check the bleed, leave for a while. Did get hot? yes...? Now check the other rads, all hot? great. If you now have a different rad thats cold, turn that lockshield open a little.
Its a juggle, otherwise called 'balancing'
2007-12-20 21:23:27 · answer #2 · answered by johncob 5 · 0⤊ 0⤋
Cold Radiator
2016-09-28 02:06:22 · answer #3 · answered by ? 4 · 0⤊ 0⤋
One Radiator Cold
2016-12-15 09:31:10 · answer #4 · answered by ? 4 · 0⤊ 0⤋
Call a heating engineer. I once installed a heating system in which one radiator would not heat up. Tried everything. I finally found that without my knowing , prior to filling the system the rads had been taken off the wall and the plasterers had dropped a solid plug of plaster down one of the pipes.
Possible causes off the top of my head
1) Stuck thermostatic radiator valve if fitted (Old Drayton valves are notorious for this.
2) System needs balancing
3) sludge or other blockage in system
4) faulty radiator (unlikely but possible)
5) air lock in pipe-work leading to radiator
Think it is very difficult for you to be able to decide which of these or other causes it might be.
If it is fitted with a thermostatic radiator valve (head with numbers) then remove the head if you know how and see if the pin is sticking out 3/8" or more. If stuck right in that would be your problem.
2007-12-20 09:38:31 · answer #5 · answered by Anonymous · 1⤊ 0⤋
RE:
I have a cold radiator in my house - have bled it and no change. All other rads seems fine; what should I do?
2015-08-04 06:41:41 · answer #6 · answered by ? 1 · 0⤊ 0⤋
Turn both valves on radiator on,go around the house and turn rest off,this will push the heat to the rad not working.When radiator gets hot turn others half on this is called balancing,i am a plumber its true.
2007-12-21 07:59:07 · answer #7 · answered by maggie 2 · 0⤊ 0⤋
Most likely there is air trapped in the system. Keep bleeding it out with the heat running, not only from the radiator bleeder (if there is one), but also int he supply lines. Also, double check to make sure the valves are all "on" that supply that radiator.
2007-12-20 10:57:49 · answer #8 · answered by 80's kid 6 · 0⤊ 0⤋
Water will follow the path of least resistance. If this heater is on a large loop or is gravity fed any blockage will place back pressure on the flow.You may need to consider upgrading your supply with in line pumps and or zoning the system. Call a pro.
2007-12-20 11:29:26 · answer #9 · answered by lenzix5 4 · 0⤊ 0⤋
Could be a partial blockage, or if it's the last radiator in the system, you may need to turn your pump speed up a bit...
2007-12-20 09:35:03 · answer #10 · answered by compyshop 3 · 1⤊ 1⤋