Plumbing Problems in the UK? Ask a Plumber Now.
Sounds like an airlock then preventing circulation, I would suggest you keep trying one single upstairs radiator at a time until you get a gurgle and it shifts.
Just keep running until the air is shifted and is in a radiator, then bleed at the end.
Try removing the screw from the pump and leaving it out with a tub under
Ok, borrowed from Noah's boat it's that old!
It's hard this as you have nowhere to vent then.
I can only suggest to keep doing what you are doing, unless you fancy pushing water up the drain point with a hose pipe to stir things up?
Perhaps half empty the system again and then when you refill go and vent the further first.
As long as you do not back fill too quickly then the overflow on the tank should cope.
yes, that will shift the most air in one go