Nest Thermostat Compatiblity

[TJJEEPER]

I have an old Trane heat pump system, with a Baystat 239 thermostat. Is it compatible withe the Nest programmable thermostat? 

 

[Jhonleanmel]

Hi TJJEEPER,

Thanks for the photos and for posting.

Your wire label indicates an incompatible system.

These systems usually only work with thermostats made by the same manufacturer. But some incompatible systems may also have the option to use standard heating system wires. Contact a local pro and have them check if your system can be rewired to be Nest compatible.

Best,
Mel

[TJJEEPER]

Thank you much! I was afraid of that. Was really wanting to go with the Nest, but, oh well. 
Thanks Again

[Jhonleanmel]

Hi TJJEEPER,

You're welcome. Your wires labeled X2 and T requires a local pro since these are not an available terminal on the Nest Thermostat. It looks like we can consider this one complete, so I will lock the thread shortly unless I can help out with anything else.

Best, 
Mel

[TJJEEPER]

No, that’s good, Thanks 

[Jhonleanmel]

Hey TJJEEPER.

Feel free to create a new thread if you have other questions or concerns.

Cheers,

Mel