A/C unit clicks when on and A/C unit doesn’t stay ‘on’ for more than a minute

[Rehauser]

I just installed a NEST Learning thermostat. My air conditioning unit outside turns on and off in about a one minute interval; don’t know if that’s expected — it used to stay on for longer periods of time.  But, the issue I have is a “clicking“ sound coming from the air conditioning unit when it is on, which we have never heard before. I put the blue wire in the “O/B“ connector as instructed but I’m wondering if it shouldn’t go into the “C“ connector since it is labeled “B/C“ in the actual furnace controller. Any feedback would be greatly appreciated. 

Thank you!!

-Rich

[Markjosephp]

Hello Rehauser,

Thanks for reaching out to the Google Nest Community Forum. I'd be happy to take a look at this for you.

Could you please share with us a photo of your thermostat's wiring? When did you install it? Also, gather the power readouts in the Technical Info settings on your actual thermostat.

I'll look forward to your response.

Best,
Mark

[Markjosephp]

Hey there,

Checking back in — how's it going? Keep me posted so we can move forward.

Thanks,

Mark

[Markjosephp]

Hi Rehauser,

I'm checking in to make sure that you've seen my response. Please let us know if you have any additional questions or concerns before we close this thread in 24 hours. 

Best regards,

Mark