glow-worm compact 100e pressure drop?

Hi, i am having the same problem but i know where the valve you are looking for is...its to the rear of the 100E...you need to remove the left side cover off the boiler...(control panel, burner cover/window need to be moved first), and you will see a large red plate size tank with a bike tire like valve on the top left...Pump this up to 11.6 psi, you will have to slightly over pressurize it as when you take the valve off you will lose some pressure....i have done all this but have no hot water and low heating so i think i need a PCB.....NICE.....
Hope that helped you....

Paul Roberts
March 2013

Neil,

I have exactly the same problem. I've been told there is a value on top of the boiler that you need to use to pump air into the boiler to pressurise it. Not by just readding the water via the taps. Only problem is that I haven't found out how to do this yet!!

Steve
November 2008