my saunier duval 30e boiler keeps losing pressure, i put preassure up to 1.5 bar and within 35-45 the pressure is at 0 and lock out comes. When i reset and put pressure up it does it again any thoughts?

mc, December 2010

mine was doing the same and the 3 way valve had to be replaced as the ones fitted to the original system had very poor seals fitted that corrode and let the water past. This replacement has stopped that problem but i think the seals in my pressure reducing zone valve are doing the same!!

kev, December 2010