Folks, the following problem occurred last night:
Have Gas boiler installed about 3 yrs ago now and although water pressure gauge always fluctuated between 0.2 bar and 1.2 bar - never had any problems with heating until last night.
Although system fired up to heat water - it failed to fire up to heat rads.
Gauge was at zero bar and presumed this was the problem ie locking itself out due to low pressure.
Eventually I left controls in 'on' position and rads fired up 15 mins later.
No visible leaks and all rads bled so anyone any advice before calling plumber in?
Thx,
Bren.