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Original Poster: Matt Miller 1775
Replacing my Honeywell thermostat with a google nest gen 3. I have a heat pump, and I’m 99% sure the system is not dual fuel (although we do have propane for our oven, and I haven’t been able to find the heat pump manual to confirm). You can see that two wires (black and brown) are piggybacked into the aux/e terminal. How does this affect my wiring diagram?
Additional details:
Heat pump: Heritage 12 6H2036A100A4
