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boiler keeps loosing pressure ??? Glow-worm 100.000btu?

keeps loosing pressure every morning
kelly, November 2006
press the valve on the expansion vessel to see if water or air comes out..

simon, November 2006
Seems like your expansion vessel needs pumping up.
you need a footpump.Switch off the boiler.depressurise the heating.find the expansion vessel valve(same as a car tyre) at the back top of boiler and pump upto 0.5 bar represurise boiler to 1.5 bar.
Hope this helps.

Pete 100% Heating ,Bristol 01454854067, November 2006
link Click here to see other fixes for Glow-Worm.