Hi, At the moment I have to turn on the central heating to have a shower as the water is not heating up if "hot water" is selected, the boiler does not react at all. Normally it defaults to "hot water" and once you turn on the shower/taps it starts heating the water instantly, however now it just does nothing. The CH is working fine though, when selecting "heating" the burner kicks in and starts heating the water as per normal. The issue has just started happening. I have tried resetting the boiler, turning off the power and back on etc but it hasnt resolved the issue. Any advise would be greatly appreciated? Thanks