Nest Learning Thermostat will not call for compressor

[CoryHCoulter]

My Nest thermostat stopped calling for the compressor while I was out of town.  My wife had a local HVAC technician come service the unit.  He saw the Nest thermostat and said he didn't like them because they frequently quit working and replaced it with another thermostat.

I reinstalled the Nest thermostat and I am having the same issue, it will not call for the compressor.  Is there a fix for this?Nest Wiring- No compressorOriginal Wiring -Works

[CoryHCoulter]

My unit is a Trane heat pump Model WCX036A100BB.

[zoeuvre]

Hi there, 

Thanks for posting here in Community and I'm sorry to hear about the situation. Can you help me with your Nest Learning Thermostat's power reading?  

1. To open the Quick View menu, press the thermostat’s ring.
2. Choose Settings.
3. Turn the ring to highlight Technical Info then press the ring to select it.
4. Select Power
   • VOC
   • VIN 
   • IIN

I'll look forward to your response.

Thanks, 

Zoe

[CoryHCoulter]

Thank you for responding zoeuvre.  Here are the readings that you requested.

-VOC 34.90V

-VIN 34.90V

-IIN 200mA(C)

Thanks again,

Cory

[CoryHCoulter]

Thank you for responding zoeuvre.  Here are the readings that you requested.

-VOC 34.90V

-VIN 34.90V

-IIN 200mA(C)

Thanks again,

Cory

[zoeuvre]

Hi CoryHCoulter, 

Thanks for the information. Some utilities install boxes to cut off power during high demand (peak) times. This can cause the error. Can you check for one of these boxes on your line? Here’s how to see if you have an energy savings box:

1. Check your meter (possibly near your air conditioner).
2. Look for a small box with one or 2 lights on it (one light is red, the other is usually green).
3. This box allows the utility company control to cycle your air conditioner off and on during certain peak times of the day.

Let us know how it goes.

Best, 

Zoe 

[zoeuvre]

Hi there,

I wanted to check and see if you managed to see the information I shared. Please let me know if you have any questions from here. I would be happy to assist, and make sure you are good to go.

Regards, 

Zoe

[CoryHCoulter]

Yes, thank you I do have one of those boxes installed. Thermostat worked for about a year then compressor stopped working. Going with a diffrent thermostat. Thank you.

[Jenelyn_O]

Hello there,

Thanks for keeping us in the loop. We understand your decision. Please feel free to create a new thread if you change your mind, we'll be here to help. I'll be locking this thread after 24 hours. 

I appreciate your help, Zoe.

Best,
Jenelyn