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- 13 Oct 2009
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One of our downstairs radiators is struggling to get hot.
At first I thought it was a balance issue, but I've opened the tap fully, and removed and freed the TRV pin.
On closer inspection the right hand TRV is getting really hot, but the left side valve remains cold.
The top of the rad is also warmer than the bottom.
So, from what I understand it is likely to be a buildup of sludge, blocking the path to the non-TRV side. Does this all sound correct sor far?
Before I get someone in to try pressure cleaning it, I was going to remove the rad and try clearing it out with a hosepipe. Is there any point in doing that without first putting a cleaner in, and am I likely to be able to shift whatever the blockage is with just a hose pipe.
Or if I do need to try 'chemically loosening' it first, how do I go about adding that to a combi system? I've only ever done it by adding to a tank.
Thanks in advance.
At first I thought it was a balance issue, but I've opened the tap fully, and removed and freed the TRV pin.
On closer inspection the right hand TRV is getting really hot, but the left side valve remains cold.
The top of the rad is also warmer than the bottom.
So, from what I understand it is likely to be a buildup of sludge, blocking the path to the non-TRV side. Does this all sound correct sor far?
Before I get someone in to try pressure cleaning it, I was going to remove the rad and try clearing it out with a hosepipe. Is there any point in doing that without first putting a cleaner in, and am I likely to be able to shift whatever the blockage is with just a hose pipe.
Or if I do need to try 'chemically loosening' it first, how do I go about adding that to a combi system? I've only ever done it by adding to a tank.
Thanks in advance.