Evening folks I was wondering if anyone can shed some light on my problem? I have a Baxi Potterton Main Combi 24 HE boiler only two weeks old and I switched off the power while having my kitchen fitted as I was sorting out some sockets and the fitters were plumbing in the sink , washing machine , dishwasher. when I turned power back on about four hours later I do not get any hot water. The boiler still fires up when I turn the thermostat up for the heating but will not fire up when I run the upstairs or downstairs hot taps. Any suggestions would be greatly appreciated.