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AC blowing hot air after Nest install

Eztoth
Community Member

This first photo is how my Trane TCONT402AN32DAA was wired: 

PXL_20230311_225230574.MP.jpg

 this second photo is a screenshot of the wiring diagram from the manual: 

Screenshot_20230317-083120.png

 and this third photo is how I have my Nest currently connected: 

PXL_20230317_123241797.jpg

 i installed the thermostat last week and turned the AC on for the first time last night. The HVAC blew hot air all night and it ended up hotter in the morning than it was before I went to bed.

Last night, the orange wire (now disconnected) was connected to OB*. This morning I flipped the breaker, unplugged the orange wire, but nothing changed, when I turned my system back on.

I am open to ANY suggestions to get this working and get my infant comfortable 

5 REPLIES 5

Eztoth
Community Member

@Patrick_Caezza 

I have seen your name all over this forum, so I hope you don't mind my tagging you to directly ask for help

Jake
Community Specialist
Community Specialist

Hey there,

 

I wanted to check in and see if you are still in need of any help. Please let me know, as I would be happy to assist, and answer any questions you may have.

Best regards,
Jake

EmersonB
Community Specialist
Community Specialist

Hey everyone,

@Eztoth, just one quick final check in here since activity has slowed down. We'll be locking the thread in the next 24 hours, but if you still need help, we would be happy to keep it open. If there's more we can do, just let us know.

I appreciate the help, Patrick_Caezza, Jenelyn and Jake.
 
Thanks,
Emerson

Patrick_Caezza
Diamond Product Expert
Diamond Product Expert

Your wiring of the Google Nest Thermostat looked correct.

Do a reset to factory defaults and set it up again.

Use this wiring,

Red - R to R

White - W1 to W (jumper to W2 not needed)

Yellow - Y1 to Y

Green - G to G

Orange - O to */OB

Blue - B to C

When asked by the Google Home app to select the wires that you have, select these,

R, W/W1, Y/Y1, G/G1, O, C

 

Screenshot_20220424-083451_Home.jpg

Example screen shot


To ensure that I see your reply, please tag me using @Patrick_Caezza

Hi there,

 

Thanks for reaching out. Were you able to try the steps provided by Patrick_Caezza? Please let us know how it goes. 

 

I appreciate your help, @Patrick_Caezza.

 

Best,

Jenelyn