Hello all, cannot find the answer i need elsewhere on the forum,so here goes......
I have a Glowworm MK 11 boiler which is 26 years old. (located in the kitchen). House heats up great, but after a while we started to lose more and more hot water until finally none at all. But still all rads were working great and house very warm.
The pipe leading to the middle part of the cylinder upstairs (directly above the boiler) was hot at the floorboards but further up the pipe, it got cooler and cooler until no heat at all.
There is water in the pipe as i loostened off the cap (at the cold end) leading into the cylinder.So no blockage i assume?? Also there is no valve to release any trapped air.
I located the motoized valve but couldnt locate the pump as its hidden under the floorboards. So i inspected the motorized valve and it was opening and closing fine. This was annoying as i thought this was the real problem.
I left the boiler running on heating/water anyway, and wired up the Immersion heater and this was our source of hot water for a while. But one day by mistake i left it on for over 15 hours. I turned off the immersion and left it off, but for days after we had hot water. This turned into to weeks and months. It was as though the red hot water cleared the crap out (if any) of the system. Does this happen or can there be another explanation????
I turned the heating and water off for 2 weeks while away on hoilday. And came home to find the same problem again. House nice and warm but no hot water. Im now in the process of switching the immersion back on and leaving it for another 15 or so hours.
Im not at all plumbing/gas friendly. Can any body please help?
Do i need a powerflush?? New boiler?? new parts?? Any help would be much appreciated. Thanks Darryl340.
I have a Glowworm MK 11 boiler which is 26 years old. (located in the kitchen). House heats up great, but after a while we started to lose more and more hot water until finally none at all. But still all rads were working great and house very warm.
The pipe leading to the middle part of the cylinder upstairs (directly above the boiler) was hot at the floorboards but further up the pipe, it got cooler and cooler until no heat at all.
There is water in the pipe as i loostened off the cap (at the cold end) leading into the cylinder.So no blockage i assume?? Also there is no valve to release any trapped air.
I located the motoized valve but couldnt locate the pump as its hidden under the floorboards. So i inspected the motorized valve and it was opening and closing fine. This was annoying as i thought this was the real problem.
I left the boiler running on heating/water anyway, and wired up the Immersion heater and this was our source of hot water for a while. But one day by mistake i left it on for over 15 hours. I turned off the immersion and left it off, but for days after we had hot water. This turned into to weeks and months. It was as though the red hot water cleared the crap out (if any) of the system. Does this happen or can there be another explanation????
I turned the heating and water off for 2 weeks while away on hoilday. And came home to find the same problem again. House nice and warm but no hot water. Im now in the process of switching the immersion back on and leaving it for another 15 or so hours.
Im not at all plumbing/gas friendly. Can any body please help?
Do i need a powerflush?? New boiler?? new parts?? Any help would be much appreciated. Thanks Darryl340.
