Two stage cooling No OB wire

[Wallsroy]

Hi

I understand that heat pump units should have a OB wire. In this case, I don't. I checked the wiring on the furnace and the blue wire goes to Y2. The rest of the wires match on the thermostat and the PCB. 

Is this possible? A two stage heat pump unit without OB wire?

Thanks

 

[moralesvicente]

Hi Wallsroy,

Thanks for posting in the Community forum. I'm happy to assist you with your concerns. Checking your wiring system looks like it is compatible and your HVAC system doesn't have a heat pump. However, to be sure that you don't have a heat pump, could you attach a picture of your baseboard to double-check and check this information 

You can take a look at this compatibility checker that will help you clear any doubts that you might have about your wiring system. 

Regards,

Daniel