Honeywell T9 Wi-Fi Smart Thermostat w/ Room Sensor & C-Wire Adapter 85267727495 | eBay
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Old thermostat works, but I can't get the Honeywell T9 to work. T9 require C Wire that was not in the wall. I added C wire & RC wire via plug-in 120v
Trying to replace this old 2 wire thermostat for a newer digital one. Problem is older unit does not have leads labeled or which cable is which. Any help on how to
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