I have a nordyne intertherm furnace ; I had a problem with a clicking noise; I have had the Capacitor replaced. After coming in and finding the heating coils hot but no blower running. But I still have a clicking noise like every 30 seconds to 1 minute apart when the unit get heated up ; and after about 5 minutes and clicking it cuts to just the fan running; I know this is dangerous but have had several technicans look at it and get different answers; please help I am freezing