Hi I just wondered if any one could help.After not using my heating for a while I switched the heating on and the pilot light led showed no ignition.The water is heating ok just on the central heating side.|I,ve tried bleeding the radiators and pump and also checked the pressure which is ok.The fan kicks in and the pump seems to be working but gets quite hot not enough to burn but warm.I,ve tried switching all the radiators off upstairs and no radiators heated up at all.Any help would be greatly appreciated