british gas wr1

we have the green star i28 junior combi boiler, when we use tap water or shower the water temp is very hot but flow ok but after some time its gets cold and then hot water start again, it is almost like it runs for a min and then takes 15 second break. I want to do two things, 1) decrease the...

The red 'Receive/Alarm' light on the SCR flashes periodically for around 5 seconds every five minutes or so (which means that the Digistat and SCR are communicating) and the green light is 'on'. This means that we should be getting heat. However, the zone valve doesn't actuate, the boiler...