Originally Posted by Frank_K
Same problem with both stats.
2013 Thor Palazzo
Can you clarify...
I assume you have one Furnace Stat? Or are you saying you have two Furnace stats?
Can I assume Thermostat 1 controls the furnace and AC#1? Thermostat #2 controls AC#2.
Are you saying when Thermostat #1 is set where the Heat turns on, it also turns on AC#1 & AC#2? That does not seem right thus I am asking for clarification. Pictures of your thermostats would help.
The only thing we know for sure is that at least one outbound HVAC request from one Thermostat is sending to at least the #1 AC unit and the Furnace. If it is same wiring and same thermostats from original coach, then your thermostat w/Furnace has shorted someplace.