VAILLIANT TURBOMAX PLUS 828E LOSS OF WATER PRESSURE?
MY VAILLIANT BOILER APPEARS TO RUN OK WHEN I FILL TO 1/1.5 BAR BUT THE PRESSURE GAUGE KEEPS DROPPING VERY SLOWLY TO ZERO CHANGED THE PRESSURE RELIEF VALVE BUT STILL NO CHANGE RADIATORS ARE FULL
MR G MORRIS, November 2007