:confused: I am attempting to replace our Weathertron thermostat with a Honeywell RTH3100C. We have a Trane heatpump system. I am having trouble with the wiring. My wires don't match the 'less common wire designations' in the manual. I have the following wires on the Weathertron: R-red T-brown...

I have a Trane Heatpump and the old "weathertron" thermostat had wires: Y G O x2 B W R T

Son-in-Law took out the old Honeywell T841A1423 thermostat for a 2.5 ton split airconditioner/heat pump and installed a Hunter 44110 before leaving for Iraq. Hunter 44110 worked on heating but not on cooling. Have that figured out, but need to reinstall the original Honeywell T841A1423. Problem...

I have recently acquired a residence that had a much older HA/C unit. The thermostat is a TRANE Baystat240 (3AAT80B1A1). Up till now it worked well. Recently both the heat and air were blowing at the same time. Go figure! LOL. I have recently attempted to replace the thermostat with a Honeywell...

I have a Rheem heat pump with auxiliary and emergency heat. My current thermostat is a Seco TA-2000 with the following wiring configuration: B W2 X R G and a piece of wire connected between E and W2. There's also an orange wire that's not connected to the thermostat. The Honeywell manual does not...