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motoloco
Joined: 20 Oct 2009
Posts: 4
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 Posted: Tue Oct 20, 2009 9:28 am Post subject: One Cold Radiator |
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Hi
My heating system works fine, except for one upstairs rad which stays completely cold. The feed pipes to and from it are also cold. I have bled it and there is no air and the pin on the TRV moves freely. I've tried turning all the other rads off to send all of the hot water to the cold rad, but that hasn't made any difference.
I've recently moved into the house and I'd guess the heating system is 15 or so years old. The system comprises 2 rads downstairs and 3 rads plus a heated towel rail upstairs. Any ideas?
Cheers |
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steve the plumber
Joined: 04 May 2009
Posts: 64
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| Posted: Tue Oct 20, 2009 4:22 pm Post subject: |
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| Silly question but is it actually connected? |
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motoloco
Joined: 20 Oct 2009
Posts: 4
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| Posted: Tue Oct 27, 2009 9:23 am Post subject: |
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| I think so! The room has a laminate flor, so it's not easy to get the boards up |
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MrsDavey the plumber
Joined: 27 Oct 2009
Posts: 2
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| Posted: Tue Oct 27, 2009 8:46 pm Post subject: |
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| Hi there. Is the locksheild turned on? |
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MrsDavey the plumber
Joined: 27 Oct 2009
Posts: 2
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| Posted: Tue Oct 27, 2009 9:03 pm Post subject: |
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| is the locksheild turned on? |
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motoloco
Joined: 20 Oct 2009
Posts: 4
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| Posted: Wed Oct 28, 2009 6:54 pm Post subject: |
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Hi
Yes the lock shield is open and the rad is full of (cold) water. All the other rads are the same (hot) temp, but this one is cold. |
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Barry Bunsen
Joined: 01 Mar 2008
Posts: 27
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| Posted: Thu Oct 29, 2009 7:08 pm Post subject: |
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Hi
You could turn off the two valves and let some water out of the bleed valve to depressure the rad. When you close the bleed valve and re open the valves you could see if it repressurises, using the bleed valve again. The point is it would answer Steves question about whether or not the rad is connected - unless you have a mega blockage.
It would also be interesting to see if you cracked the nuts under the valves whether or not water would flow, but you would have to know what you are doing (turn the boiler off, expect a mess, put the system back to the correct pressure, remove any new airlocks, maybe add some more inhibitor etc)
Good luck. |
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motoloco
Joined: 20 Oct 2009
Posts: 4
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| Posted: Sun Nov 01, 2009 4:40 pm Post subject: |
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Thanks Barry
I've tried what you suggested and the rad fills up again, so there doesn't appear to be a blockage. I guess it's time to call a plumber! |
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