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vaillant ecomax 828/2e - pressure is zero. How can I increse pressure?

Silver loop at base of boiler with two black plasticky devices ie one arrowhead shape, the other screw-shape. Not sure if these relevant...
HelenS, December 2010
:o))
Glad to help

Carefree, December 2010
thank you Carefree, seems to have worked! Merry Christmas

HelenS, December 2010
There are two 'arrowhead' black handles bottom right of the boiler, one pushes away from you, the other toward you, get the needle into the green area then turn them both off.

If they haven't been used for some time, they tend to stiffen up, a little WD40 will free them up.

Carefree, December 2010
link Click here to see other fixes for Vaillant.