evening boys ,right then ,here goes ,this morning started the T/M. and switched off . The header tank had overflowed,and what I thought was water coming out of one of the exhausts was when I looked just the water from the header tk running down the pipe ,think i can rule out damage to the heat exchangers?
Dan on the left hand of the header tk at the bottom we noticed a wire with a connector had popped out and pushed it back in , we ran the machine again,temp gauge working and hot water but same thing when switched off ,header tk overflow ,any ideas boys and by the way many thanks for the replies ive had . ady