why won't my Glow-worm economy f work?

Everytime I take a radiator off and replace it the system won't ignite . the pump works but when I try to bleed the radiators it sounds as though air is being sucked in.
trev mckone, November 2005


done
Make sure there is enough water pressure in the system to fill all the radiaters before attempting to bleed them.

martin, November 2005
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