One of our radiators singularly fails to heat up. The pipe to it is appropr= iately hot, but the rad never gets anything more than tepid. I've tried a = bit of balancing (trial and error rather than with a thermometer), but I'm = wondering whether there is some sort of blockage in that rad so want to try= a sledgehammer type approach.
The rad is on microbore.
If I were to turn off (either via the TRVs or valves on the non-trv'd rads = in the rest of the house), am I likely to do any damage to the pipework or = the boiler by just trying to force a flow through just one micro-bore radia= tor?
Firstly I'd want to see if it heated up, and then secondly (if it didn't he= at) I'd try opening the bleed valve to check that some pressure / flow is w= orking there.
Any thoughts?
Thanks!
Matt