Compressor/Condenser cycles of then back on.

[1960-keith]

 I have the 3rd Gen thermostat with a sensor connected to it.

I'm having a major issue with the AC compressor/condensor cycle off and while the fan system is still circulating to cycle off the compressor/condensor kicks right back on. This happens a few times during the day and night. I'm sure this will evenuatly damage my sytem if I let this continue. The system does work fine when it cycles correctly.  Could it be the sensor causing this?

I had this issue on an earlier post and filled out the form for help but wasn't resolved. Can someone revisit this and assist? 

[zoeuvre]

Hi 1960-keith, 

Thanks for posting here in the Community forum, and I'm sorry to hear about the situation. Let me take a look at this for you. 

Have you checked if your air filter is already dirty or needs to be changed? If not yet, I recommend you check for it since a clogged filter might cause the symptom. You can view this article for more details, then let us know how it goes.

Best,

Zoe

[Dan_A]

Hey there,

I wanted to follow up and see if you still needed help. Please let me know if you still have any concerns or questions from here, as I would be happy to take a closer look and assist you further.

Regards,

Dan

[1960-keith]

Dan, 

After a year burning up the fan and 2 capacitors in my condenser I’ve solved the problem. 

I have a very large master bed & bath. I had the sensor in the bath area because it’s warmer and wanted the ac to cool this area. In the past I’ve noticed if we’re in the bath area with a smart phone or tablet the WiFi lags. With that I found the thermostat having the same issue trying to see the sensor being in a dead zone area. What this did was the condenser would turn off and while the fan was cycling to off the condenser would kick right back on with 5 seconds. This is what damaged the condenser several times. 

Please pass this information to Nest techs and to let consumers know to be aware of sensors being in dead zone areas in homes. 

Thanks, 

Keith J Labat 

[1960-keith]

Dan, 

Forgot to mention how to I fixed the issue. Simply moved it for the bath area to bedroom so the thermostat can see the sensor. 

[Dan_A]

Hello again,

We wanted to express our appreciation by providing the steps that you took to get a fix. Hats off to you! As we've got our resolution here, we're going to mark this thread as resolved. We'll be locking this thread if we don't hear back from you in 24 hours. Should that happen, feel free to create a new one if you have more questions or other concerns in the future.

Cheers,

Dan

[1960-keith]

Dan, 

Thanks for the hats off but it took having the condenser brake 3 times over a year to figure it out. The only reason I stuck with Nest was having the sensor control the temperature over the thermostat being it is in a hallway that feels the Den AC unit from the opposite side of my home. 

Thanks, Keith

[Dan_A]

Hi 1960-keith,

We hear you! Thank you for sticking with us and having the patience to do so. We appreciate people who want to share their thoughts with us. We're always looking for ways to improve.

Cheers,

Dan

[Dan_A]

Hello there,

It's been a few days since your last reply — we're going to lock the thread within 24 hours. If you have further concerns, please feel free to create a new post.

Best regards,

Dan