Any heating and cooling Guys out there? I have a question

Jim, furnace is probably going out on flame failure(not seing pilot on ) which would be the flame rod , metal rod that's by pilot flame, you can clean it with acetone or a quick wire brushing , also on furnace is the trouble shooting lights on front panel cover, usually has window on door to see blinking light ,when it fails count blinks sometimes a pattern ,then shut off furnace ,remove cover and on back of door should be trouble light codes ,will tell you what problem is , these furnaces are good ,but do require some maintenance, as they do produce acidic condensate , have various water traps in furnace that should be flushed and cleaned ,hope this helps, Mike