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Nest not turning on compressor

Jfar
Community Member

I installed a new 3rd gen learning thermostat yesterday and when I switch to cooling, it turns the fan on but not the compressor for cold air,

 

I have a heat pump, and have connected the wires as directed by the app. I replaced the Nest again with my old Honeywell thermostat and it’s working fine.

I’ve tried swapping the Y1 and O wires, swapping the Y1 and W2 wires, switching between O and B in the Nest settings, nothing has helped. Anything else I should try?

 

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10 REPLIES 10

Jfar
Community Member

 

Jfar
Community Member

 

Jfar
Community Member

Any advice? I think I’m just going to return the Nest if I can’t figure this out, seems like a hassle unfortunately.

Ckquestions
Community Member

Jfar, I am having the same issue.  My fan will kick on with cooling or fan mode but the cool air will not initiate.  Frustrating because the wiring matches as stated

Jfar
Community Member

So frustrating.. hope you get yours figured out. I’ve tried a bunch of things but nothing has worked, I put my old one back on and it’s works great. I’ll probably return the nest tomorrow

Ckquestions
Community Member

That’s what I’m doing… I don’t have patience for no cool air

Jake
Community Specialist
Community Specialist

Hey Jfar, Ckquestions,

 

Apologies for the delayed reply, I wanted to follow up and ensure you are good to go. Please let me know if you have any questions from here, as I would be happy to take a closer look and assist you further. 

Best regards,
Jake

Orrcm12
Community Member

Any update on how to fix? I'm having the exact same issue that just started

Jfar
Community Member

I gave up, old thermostat worked fine when I put it back on.

GarrettDS
Community Specialist
Community Specialist

Hey folks,
It looks like we have come to a solution so I'm going to be locking this thread. If you have any other concerns or questions, please feel free to create a new thread.

Have a great day.
Garrett DS