cant find my wiring type, how can i know if its compatible or no

[rgaila]

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Original Poster: Mohamad Saadeh 

how I can know if this wiring type is compatible with Nest Thermostat since i cant find it in the compatibility checker 

GND Black

+12 V   Red

WRED-TXD Blue

WRED-RXD yellow

Mohamad Saadeh Original Poster

8/13/21

cant find my wiring type, how can i know if its compatible or no

how I can know if this wiring type is compatible with Nest Thermostat since i cant find it in the compatibility checker 

GND Black

+12 V   Red

WRED-TXD Blue

WRED-RXD yellow

[rgaila]

Hello Mohamad, 

My apologies for the delayed response, and sorry to hear about your wiring issues. I can definitely understand the frustration  when it comes to wiring issues as it can be very confusing to figure out sometimes, but I'm happy to look into this for you. 

Since the compatibility checker wasn't able to help you, I would suggest using this article to help identify the different wires. If you're still having troubles after that, I would suggest contacting a pro to come out to help you with this, especially due to your wiring setup. Please let me know if you have any more questions or concerns. I'm here to help! 

-From Ai,Community Specialist.

[SBalkhair]

I have a similar wiring, is google nest thermostat compatible? 

[Ryan_G]

Hi there SBalkhair,

Thanks for posting here and we're sorry for the delay.

The first photo above shows a proprietary type of HVAC system and it is not compatible with Google Nest Thermostat. Proprietary systems aren’t compatible with Google Nest thermostats. However, some proprietary systems can be rewired by a pro installer to be compatible.

Check out this link to know more.

Best regards,

Ryan

[Ryan_G]

Hey folks,

Thanks for visiting the Google Nest Community. 

Since this thread hasn't had activity in a while, we're going to close it to keep content fresh.

If you have additional questions, feel free to submit another post and provide as many details as possible so that others can lend a hand. 

Hope this helps!

Kind regards,

Ryan