press the valve on the expansion vessel to see if water or air comes out..
simon
November 2006
Seems like your expansion vessel needs pumping up.
you need a footpump.Switch off the boiler.depressurise the heating.find the expansion vessel valve(same as a car tyre) at the back top of boiler and pump upto 0.5 bar represurise boiler to 1.5 bar.
Hope this helps.
Pete 100% Heating ,Bristol 01454854067
November 2006
Automatic Answer
While you wait for answers, we may have found some information which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix home heating systems.