Nest Reverse Heating and Cooling - No O/B Wire for heat pump

[ohmyjosh]

Hi, 

I recently installed a nest 3rd gen to replace a Honeywell FocusPRO TH6110D.  I wired it correctly, double triple and quadrupled checked. (see Photos) When I went to test it the HEAT blows cold (coldish) air and COOL blows warm air. I know there is something to do with the changing O/B in the settings but there wasn't a o/b wire attached to the old Honeywell. (again see photos) Because the nest is "smart" it wont let me adjust or look at any Heat Pump settings to change from O to B because a wire isn't connected. 

I re-attached my old Honeywell and it works just fine without the o/b wire, it seems like the W wire serves as both the w and O/B on that system.  

In any case I was hoping someone might be able to help. Namely @Patrick_Caezza since he seems to have all the right answers. 🙂 

Photos - https://imgur.com/a/rEJoHTa

Other note: There are unused, unstripped wires still in the wall orange and black. (which orange traditionally is the O/B right?)

[Patrick_Caezza]

Move the white wire from the W1 terminal to the OB terminal. Then reset the thermostat to factory default and set it up again.

The Y wire is what turns the heat/cooling on and off. The O/B wire is what selects heating or cooling.

[ohmyjosh]

Thank you so much! Totally worked. You are a Gem. Have Venmo? 

[Patrick_Caezza]

Thanks, I do this to help people

[Markjosephp]

Hello folks,

Thanks for your expertise here, @Patrick_Caezza. Big help!

@ohmyjosh, I wanted to follow up and ensure you are good to go. I appreciate you posting and updating us on your efforts to address your concern and find a fix. So I will lock the thread within 24 hours unless I can help out with anything else.

Regards,

Mark