We have removed a radiator in our front room as the fixings have pulled out and ripped the plasterboard wall, we dont want to replace it, so for now we have capped it off. We thought this would be the easier and cheaper way to do this until we could afford to have it removed permanently. The problem is now none of our radiators in the house will heat up at all.
We have a combi boiler and had to re pressurise it after removing the radiator. The heating clicks on at the thermostat and it says c on the boiler but no radiators will heat up. It is a new build house with flexi pipes that go into the walls and our boiler is a ideal combi 35. We still have hot water. We have turnt the radiators off at the boiler and thermostat and the pressure is staying at 1.5. When we were trying to turn the heating on the pressure would drop to 1 or just below and the needle on the dial kept flickering up and down.
We have tried bleeding the radiators but still not working.
Any advice really appreciated.
Thank you for all the advice, we have connected the capped off pipes together now and all the radiators upstairs are working, we have 4 radiators downstairs. A large one in the living room, one in the downstairs toilet, one at the bottom of the stairs and one in the kitchen. The only one that is working downstairs is the kitchen one. All have been bled and the system re pressurise. Could this still be a airlock? Where would a drain point be.
Thank you
Are you a tradesperson and able to answer this question?
Hiya this is probably down to your system being on a 1 pipe system
The only temporary way to over come this would be to put some pipe between the valves to compete the circuit
Hi there it could be that your heating is on the one pipe system how the heating works normaly on the heating system you have flow that come out and return that returns to the boiler with two pipe system the way should be done wich will work even if you cup off one radiator
Then you have one pipe system so all you radiators are linked with one pipe in and out flow and return on the same pipe wich trades do it to save money and time specially on the new buildings house's thats when you have problem you cup off one radiator then the water won't circulate around as the sure is cut in half dead end
So you need to loop the pipework on that radiator you cupped off
I hope it hepls
Hi, yes could be a few things as said above (air lock, diverter valve, pump) Are both isolation valves at the boiler (flow and return) definitely open? Ive know people to accidentally turn the return isolation valve off when opening/closing the filling loop to re-pressurise the system.
Could well be an airlock and Worst case it could be that he diverter valve is sticking or stuck in HW position. If no heat at all is coming down the flow pipe directly at the boiler this is likely to be the case.
Check those out and come back if you need! :)
Hi, it could well be an airlock. If you have a drain off point downstairs off of the radiators then attach a hose pipe and open it up. That should hopefully pull through water and air and then you can shift the airlock in the radiators. Turn the drain off off and repressurise with a radiator vent open giving the air a way to escape. Your aav inside the boiler could of failed or is off, but this would need a safe safe registrated engineer to come out and see. There are a lot of things a seasoned plumber could do to get you sorted very quickly, so the cost would be minimal. Hope that helps?
This sounds like a possible airlock I would see if there is a drain point at the bottom of the house or outside and attach a hosepipe to it and open the valve and clear then re pressurise the system.
You probably have 1 or 2 air vents that need opening at high points in the system. Without knowing the layout it is hard to say, but that is the 1st thing I'd investigate. Hope that helps.
From your edits it could well be that some of the comments ref a single pipe system could be on the right track, as otherwise connecting those pipes would probably make little difference. No system, even an old single pipe 1 should rely upon flow through a radiator to keep the system running. By what you say about flexi pipes (& I assume you mean plastic), it sounds like you have a modern system. Thus I would absolutely expect it to be piped properly with dedicated flow & returns. If this is not the case then I can only conclude it may have been fitted by a DIY bodger or suchlike cowboy & that you need a reputable pro to have an in depth look at the system layout.
Sorry to sound like the harvenger of doom, but from reading your update, it doesn't bode well.
