I am a plumber gasfitter and refrigeration tech and I am stumped!!! I am trying to wire in my XL15i heat pump with a TUHMB060 furnace and a Honeywell HZ 322 zone board. I can't get the thermostat to do auto change over. It will only run in heating or if I switch the o/b options on the zone panel it will switch but will not via the t-stat. Also the t-stat says "heat on" the system does nothing then it goes to aux heat where the heat pump kicks on runs perfectly and then satisfies. Now I want to have my gas kick on as back up heating and this doesn't happen either. I have looked at the wiring 100 times and am burnt out by it. Can anyone help with this?
Thanks guys for taking the time. I'm sure it's something simple that I am missing.