potterton suprima 60 problems

[johnpm]

My potterton suprima 60 boiler was moved upward 6 feet about 3 years ago (due to a garage conversion) and has been fine.
But last week the bleed nipple above the boiler (left pipe) loosened and caused a minor flood.
I tightened the bleed nipple and left the boiler a couple of days (to dry out)

When I restarted the boiler, it heated the water up for about 1 minute then pipes clanked and the red light flashed.

The (right) pipe above the boiler was full of air, which I bled, then I restarted the boiler after half an hour.

I repeated the above procedure about 10 times, but each time the pipe fills with air.

Any help appreciated.

 

[croydoncorgi]

Where's the pump relative to the boiler?
If you really did bleed out all the air in the system when you refilled it afgter repair, it sounds like you've got a major air leak which lets air INTO the pipework as soon as the pump starts