Hi everyone glad to be a new member to this forum even though hvac is not my field I could help out on the many questions asked about. But the problem im having is that my furnace is producing heat for about ten seconds then shuts down. about two seconds after that. its begins to click continously until the heat kicks back on . it then repeats the shut down process all over again. Is it the thermostat? or is there enough gas going to it. or something more serious . thanks if you could help .