the pressure on my vaillant combi boiler keeps going too high. A service engineer lowered the pressure and refilled the system but water dripping from the flute and though I lower the pressure it keeps going up? Is it ok for a few days until I get someone else in?

charz, September 2007

u need to ensure the filling loop is completely off, if is u need a new DHW heat exchanger(heat plate)

kris, September 2007