Hi I have a 4 year old Grant Combi Vortex 26 oil boiler that slowly loses pressure.
I cant see any visible leaks in the water system but it loses pressure after about 3 weeks from 1.2 bar down to almost nothing.
Could the expansion vessel be faulty ?
thanks
steve
I cant see any visible leaks in the water system but it loses pressure after about 3 weeks from 1.2 bar down to almost nothing.
Could the expansion vessel be faulty ?
thanks
steve