now when the central heating on the hot water system is working . when the central heating is off - hot water system works only open the tap to the maximum if it is a classic hw diaphragm fault. Is that the diverted valve or the whole pannel
I have a combi boiler . It used to work fine a weeks ago, both central heating and domestoic hot water. Now the central heating is ok. The hot water system is not working properly. only it works when I open the tap fully to the maximum ,then only the boiler gets started fire. The boiler is...