Have HVAC Questions? Ask an HVAC Expert for Answers
Hello, tell me a lot about your tech skills and I can coach you to a diagnosis.
So far it sounds like the control board has failed if it has worked will in the past few years and just began this malfunction.
We can go from there, or if none of this is in your skill set range I can locate a well rated HVAC contractor controls specialist in your area for you.
Roughly one HVAC tech in 10 is up to speed enough to cope with what you have... if you are calling companies at random the odds are against you.
Trouble shooting this yourself, even with a few hours of my help will be arduous with a thin chance of success, unless you choose to replace the entire zone panel and wiring... even that will be a tall order.
YOur best bet is to let me see if i can call around for you and locate a competent HVAC controls man in your area... for that I need to know which direction you are from the center of the nearest city.