Have a carrier thermostat that has 6 wires 6 colors that have a carrier thermostat that has 6 wires 6 colors that correspond to the wiring diagram The hvac system has a heat pump. I was told by Honeywell to buy their th5220 The wiring seems to not correspond correctly The red green yellow and common are Hello, the white wire needs to go on Aux and the orange to the reversing valve (O) Did you have an E hooked up on previous stat? and is O set for heat or cool in program? Edited by Billy on 3/11/2010 at 2:12 AM EST2 heat/one cool with auxActually E and aux are usually jumped together. I would leave on auxThank you for our patience!The O terminal wire is what decides cooling/heating. Is the menu set up for O terminal to be energized in cooling?Yes SOLVED: Wiring Hunter Thermostat to 6 wire Carrier fa4bnf0 wwwa››Carrier›38BRC048 Air ConditionerWiring Hunter Thermostat to 6 wire Carrier fa4bnf036 I am trying to wire a new programmable automatic thermostat to my system and found it to have 6 wires when I pulled the old thermostat off. I cannot find the wiring diagram for my system and have not been able to figure it out on my own.
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