Only 2 wires on my current thermostat

[Chezwards]

My current thermostat to the Mitsubishi mini split(heats and cools) has two wires A & B, red and white; how do I wire it up to my Nest?

[CoolingWizard]

Your mini split system does not use the typical 24 V system control. The Mitsubishi uses a digital communications over the two wires and is therefore not compatible with the Nest or any traditional thermostat in fact.

The AC Cooling Wizard 

[EdwardT]

Hi folks,

@CoolingWizard, thanks for the help!

@Chezwards, how's it going with your Nest Thermostat? Still need our help?

Thanks,

Edward

[EdwardT]

Hey Chezwards,

It's me again. I wanted to check back in to see if you have other questions and concerns. Feel free to let me know if you do. 

Thanks,

Edward

[EdwardT]

Hi Chezwards,

I'm just checking in to make sure that you've seen our response. Please let us know if you have any other questions or concerns as I will be locking this in 24 hours.

Thanks,

Edward