nest learning thermostat only putting out AC cold air when heating

[billyboi456]

I have a Nest Learning Thermostat 3rd generation that is only putting out AC cold air when it's trying to heat.

I have quadruple checked all the wiring, and I think that the issue is my Y1 wire.

In the Nest app and on the thermostat itself, it says that Y1 is marked for heating and cooling. However on my heating unit, Y is used exclusively for cooling. How do I tell the Google thermostat to only use Y for cooling?

[zoeuvre]

Hi there, 

I’m sorry for the delay in responding, and I thank you for taking the time to contact us. Please send us a clear photo of your old thermostat wiring, how you wired it to your Nest Learning Thermostat, and the make and model of your HVAC system. 

I'll look forward to your response.

Regards,
Zoe

[Princesss]

Hey billyboi456,

We just want to check if you have seen our response posted above. Let us know if you have additional questions, otherwise we'll be locking the thread.
 

Best,

Princess

[billyboi456]

Hi there! Sorry for the delay as well. I fixed this by just removing the OB wire since my heat pump only goes one way.

[Jenelyn_O]

Hey billyboi456,

Woohoo! That's good to hear. Please let us know if you still have questions or concerns. Otherwise, I'll be locking this thread after 24 hours.

I appreciate your help, Princess and Zoe.

Thanks,
Jenelyn