Right guys I am quite literally stumped with a constant confused look on my face. So did what I needed to do as advised in my previous thread about flushing the system found here:
www.diynot.com
So after taking the rad in question off the wall I connected a 1/2” flexi pipe to the return valve, opened the full valve under the boiler and let it run for 15 minutes whilst the water eventually turned clear shooting out into a bucket. Initially when I did this the water sprayed out with considerable pressure but I’m assuming that’s becAuse the boiler was at 1.5 bar pressure but once I let the return valve run and opened the fill valve the boiler could only push at 0.5 bar pressure so the water was coming out as the same pressure the water mains was coming in. Anyway 15 minutes later I turned off the return and connected the flexi to the flow and did the same thing. Once I did this I thought I’d go one step further and went to the radiator downstairs with the drain valve, connected a hose pipe to it and drained the system. At this point I opened every valve on all the other radiators excluding the one I took off the wall as if I opened these valves water would gush out onto the carpet. I then opened the fill valve again and let the system drain through the hose pipe into the gutter outside until the water pretty much turned into drinking water (not that I tried to drink it). I did this for another 20 minutes. Whilst standing watching the water draining into the gutter with conviction this was going to sort all my problems out I came to yet another spur of the moment and went to screwfix to buy a replacement radiator just to be extra sure I was doing the most! Anyway back home, fitted the new radiator, refilled the system, added a litre of inhibitor, bled the system, switched the boiler on, put the boiler into purge mode, waited until it did its thing and then bled the radiators again and this was it. I was ready after a stupidly long day and face looking like I’d just crossed the finish line, I walked towards the boiler with my index finger ready to hit that on button. I pressed it, the pump hummed, and the heating started. Started downstairs in the kitchen as this is where the boiler is situated, the radiator in there, nice and hot, moved into the downstairs toilet, radiator nice and hot, corridor, hot, downstairs living room… hot, upstairs master bedroom… hot, upstairs toilet… hot… then I walked to the second bedroom, the one in question and I touched the radiator…. #%^#%#€$¥#+^!!! Still the same! Feed pipe piping hot, water through radiator warm only along the top and return pipe cool as anything. What the f*ck is it?!? I had enough I shut it all off and went to sleep. Next day I thought let’s try something, so I turned off every radiator in my house apart from the troubled one, I opened both flow and return to max and went on to switch the heating on, I can hear the pump running but the flow pipe that leaves the boiler and goes straight upstairs into the secondary bedroom and into the trouble radiator was cold, not warming up at all indicating no hot water running through the pipe, I waited 10 minutes, nothing. So I went to the master bedroom which is the furthest point from the boiler and turned the trv on, well I got my mrs to do it while I stood by the boiler touching both flow and return pipes, as soon as she did this I felt the flow pipe get hot and the master bedroom radiator started to warm up pretty much within 1 minute. Now only the master bedroom radiator and the troubled radiator is on at this point so I sit in the small bedroom and wait to see if anything happens, about 10 mins later I can feel the flow pipe getting hot and 20 mins later the radiator is only slightly warming up on the top side and the below is cool and the return is cool. Also note with the two radiators on, the master bedroom working one I only opened the lock shield half a turn from close whereas the troubled one is open fully. Now from this investigation it seems if I only try to have the troubled radiator on and all the others off, no water flows through the pipes, but as soon as I open any other radiator the water begins the flow and even towards the troubled one but as previously mentioned with only a bit of warmth going through the radiator. I’m literally stumped on what the problem is. Winter is around the corner and I don’t fancy using an electric heater in that room all winter. Please oh learned ones… help me, please help me, and please please patiently read my message essay so I don’t have to come back to messages telling me it’s air in the radiator and I need to bleed it, because I might quite literally jump out my bedroom window.
Thanks and good luck to you helping me guys!
Flushing the central heating system
When I took the radiator outside and hosed it… clear water was coming out from the other side I meant the pipework return to the boiler... Not the outlet of the rad.
www.diynot.com
So after taking the rad in question off the wall I connected a 1/2” flexi pipe to the return valve, opened the full valve under the boiler and let it run for 15 minutes whilst the water eventually turned clear shooting out into a bucket. Initially when I did this the water sprayed out with considerable pressure but I’m assuming that’s becAuse the boiler was at 1.5 bar pressure but once I let the return valve run and opened the fill valve the boiler could only push at 0.5 bar pressure so the water was coming out as the same pressure the water mains was coming in. Anyway 15 minutes later I turned off the return and connected the flexi to the flow and did the same thing. Once I did this I thought I’d go one step further and went to the radiator downstairs with the drain valve, connected a hose pipe to it and drained the system. At this point I opened every valve on all the other radiators excluding the one I took off the wall as if I opened these valves water would gush out onto the carpet. I then opened the fill valve again and let the system drain through the hose pipe into the gutter outside until the water pretty much turned into drinking water (not that I tried to drink it). I did this for another 20 minutes. Whilst standing watching the water draining into the gutter with conviction this was going to sort all my problems out I came to yet another spur of the moment and went to screwfix to buy a replacement radiator just to be extra sure I was doing the most! Anyway back home, fitted the new radiator, refilled the system, added a litre of inhibitor, bled the system, switched the boiler on, put the boiler into purge mode, waited until it did its thing and then bled the radiators again and this was it. I was ready after a stupidly long day and face looking like I’d just crossed the finish line, I walked towards the boiler with my index finger ready to hit that on button. I pressed it, the pump hummed, and the heating started. Started downstairs in the kitchen as this is where the boiler is situated, the radiator in there, nice and hot, moved into the downstairs toilet, radiator nice and hot, corridor, hot, downstairs living room… hot, upstairs master bedroom… hot, upstairs toilet… hot… then I walked to the second bedroom, the one in question and I touched the radiator…. #%^#%#€$¥#+^!!! Still the same! Feed pipe piping hot, water through radiator warm only along the top and return pipe cool as anything. What the f*ck is it?!? I had enough I shut it all off and went to sleep. Next day I thought let’s try something, so I turned off every radiator in my house apart from the troubled one, I opened both flow and return to max and went on to switch the heating on, I can hear the pump running but the flow pipe that leaves the boiler and goes straight upstairs into the secondary bedroom and into the trouble radiator was cold, not warming up at all indicating no hot water running through the pipe, I waited 10 minutes, nothing. So I went to the master bedroom which is the furthest point from the boiler and turned the trv on, well I got my mrs to do it while I stood by the boiler touching both flow and return pipes, as soon as she did this I felt the flow pipe get hot and the master bedroom radiator started to warm up pretty much within 1 minute. Now only the master bedroom radiator and the troubled radiator is on at this point so I sit in the small bedroom and wait to see if anything happens, about 10 mins later I can feel the flow pipe getting hot and 20 mins later the radiator is only slightly warming up on the top side and the below is cool and the return is cool. Also note with the two radiators on, the master bedroom working one I only opened the lock shield half a turn from close whereas the troubled one is open fully. Now from this investigation it seems if I only try to have the troubled radiator on and all the others off, no water flows through the pipes, but as soon as I open any other radiator the water begins the flow and even towards the troubled one but as previously mentioned with only a bit of warmth going through the radiator. I’m literally stumped on what the problem is. Winter is around the corner and I don’t fancy using an electric heater in that room all winter. Please oh learned ones… help me, please help me, and please please patiently read my message essay so I don’t have to come back to messages telling me it’s air in the radiator and I need to bleed it, because I might quite literally jump out my bedroom window.
Thanks and good luck to you helping me guys!
