Have HVAC Questions? Ask an HVAC Expert for Answers
Hi, I'm Tim and I'm an HVAC expert here to assist you with your questions. Please provide all information I request as it makes it more difficult to troubleshoot something when I'm not there onsite. Essentially, you become my eyes and ears. Thanks for the opportunity to help. At the end of our dialog, you will have a chance to rate my service, but please wait until we are finished and you're satisfied you have all the information you need.
Is this a package unit? Do you have make and model number? If the blower works on fan ON and AC, but not heat, most likely it has a bad control board.
OK, that doesn't help a lot in terms of pulling up more information on this unit. Do the burners light in heating mode, just no blower?
OK, need to know if burners light for one thing. Secondly, somewhere inside the unit should be a tag that has identifying information, make model, serial number. This will help should I need a wiring diagram. Finally, if you want to troubleshoot with my help, you should have access to a voltmeter. These are very inexpensive if you don't have one. Usually under $25.
Were you able to get that information?