The pressure on my boiler dropped suddenly to zero. Opened the tap and refilled to 1.1 and then shut of the inlet water. Immediately the water drained as fast as it went in.The pressure returned to zero. No visible signs of a leak . The heating was working fine and had just switched off the timer in the morning.Checked the overflow pipe and no water escaped from there. Please help

ardnaren, January 2010

how do I get the pressure on my 701 upto 1 bar it dropped to 0 and I can't find where the inlet valve is please help

Lee osborne, November 2010

sounds like you have leak in one of your heating pipes maybe under your floor,
check ceiling for any water marks or try and get under the floor.

stewart, February 2010

expansion vessel sounds like it needs recharging ,change safey valve,fill back to 1.5 bar,vent rads then recheck pressure at 1.5 bar

ferroli engineer, January 2010