I'm in need of some HVAC help on replacing my old non-programmable heat pump thermostat. I only use the heat pump for AC in the summer. It's used as a backup in the winter in case the oil furnace goes out.
I bought two different Honeywell thermostats. The first one I bought was because it was on sale for about $10 & I didn't realize I had a heat pump at that point. The second is specifically for a heat pump setup.
The problem I have is neither of the new thermostats have the same connections as the old one & I don't know where to connect 2 of the wires. Any help would be appreciated.
In the winter months the mode is set to heat & the system is set to Emergency Heat to run the furnace.
Honeywell Heat Pump Thermostat
As you can see there is no place to connect W3.
Can O & W be connected to the same place?
Reg. Honeywell Thermostat
missing more connections than the other thermostat is.