ok thought that -took a photo to look underneath the valve but not helped. will keep trying! its in a recessed cupboard so hard to get underneath the valves to see
Happy new year all!
the pressure in my vaillant boiler has dropped to 0.4 and I have occasionally had to repressurise every few months. however on turning the valves on the refill loop no water is coming through as usual -have no idea why-help much appreciated.
no idea if this is relevant but I...