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no power anywhere,changed fuses and checked junction box all ok. check box for pump 3port etc no power no power to pcb any ideas

when turning isar on the burner ignites and stays on for 30 seconds then cuts out and burner light flashes. But if i turn on and off every time it trips out the radiator gradually warm up but stills trips out when warm.

hi ive got a worcester 24 cdi which gives me hot water when the central heating is on,but when its water only my water is just about luke warm. Is this the diverter valve or dhw thermister

dont know if anybody can help me but i get central heating but no hot water.I checked the pin on diverter valve and it pops out when hot water is turned on.So does this mean its the microswitch.

i have a ideal concord boiler and my hot water has now gone luke warm,but my cylinder stat is on full and my boiler stat is also on 5. My cylinder is hot at the top but cold at the bottom.put my randall on hot water only but its still the same.Anyone know what the problem could be , i got told...

hi i have a ravenheat CSI.85 condensing boiler.It comes on for hot water but wont come on for central heating.Seems dead dont know if its diverter valve or pcb

can anyone tell me what type of boiler is a thorn emi gemini boiler. customer reckons he has no cylinder but above the boiler he has a vessel and pump.Also what system do the run on

i have a brittony 80 combi.It was fitted in 1998.Boiler fuse blew,so i replaced fuse. When i turn hot water on the boiler fires up and gives me hot water.Sometime hear a noise coming from pump. When i turn heating on it fires up and then the flame cuts out and the pump keeps running.Customer...