Hi. Tonight I've drained the f and e tank in the loft enough to add some corosion inhibitor to the system and change a dripping ball valve. I filled the f and e tank again and bled the radiators. Downstairs rads had virtually no air in them, however, upstairs took absolutely ages to bleed.
On restarting the boiler to test the heating again it lit and stayed on for about 20 seconds before going out. There was a slight gurgling sound which seemed to travel back into the f and e tank. I have bled everything I can think of with no joy.
The system is an open vented system with a small f and e tank and an Ideal boiler. The flow (i think) has an automatic air vent which seems to be working correctly.
I'm sure it's air trapped but I'm at a loss how to rectify it. The boiler isn't "kettling" as far as I can tell. I have seen that happen before but this is different.
The system seems to be in pretty good order. It was installed in 2001 and has had regular inhibitor added. The water when I drained down was fairly clear.
I've bled the pump too although it's one I haven't come accross before. It has a large black knurled knob in the centre where you would normally find the bleed screw. It unscrews fairly easily but doesn't remove completely. Got some air out but no water.
Any help would be gratefully received.
On restarting the boiler to test the heating again it lit and stayed on for about 20 seconds before going out. There was a slight gurgling sound which seemed to travel back into the f and e tank. I have bled everything I can think of with no joy.
The system is an open vented system with a small f and e tank and an Ideal boiler. The flow (i think) has an automatic air vent which seems to be working correctly.
I'm sure it's air trapped but I'm at a loss how to rectify it. The boiler isn't "kettling" as far as I can tell. I have seen that happen before but this is different.
The system seems to be in pretty good order. It was installed in 2001 and has had regular inhibitor added. The water when I drained down was fairly clear.
I've bled the pump too although it's one I haven't come accross before. It has a large black knurled knob in the centre where you would normally find the bleed screw. It unscrews fairly easily but doesn't remove completely. Got some air out but no water.
Any help would be gratefully received.