PRO1 T701 Thermostat to Nest Learning - Now blowing cold air when set to heat.

[leschuler]

I have a Goodman A/C w Heat Pump and a Comfort Fan Coil FX4D. It's a new build home. The builder installed a PRO1 T701 Thermostat. Picture of wiring in link. This won't let me upload photos.  Everything Works fine. I decided to change it to a Nest Learning thermostat. Now when set to heat it blows cold air. I tried switching O to B and back again. Reset Nest. Still blows cold air on heat. Any and all heat appreciated.

Lance

https://photos.app.goo.gl/91dAeLB2NK1iPNp56

[Eztoth]

I am experiencing a similar but opposite problem:

My wiring is the same as yours, but my AC blows hot air after Nest install. I am guessing it has to do with the Orange wire connecting to the O/B*

I am going to try to hook my old unit back up to get things back to par, then rehook up my Nest without connecting the orange wire.

I'll let you know anything I find, if you'll pass along anything anything that helped your situation 

[leschuler]

thanks, i connected the Y to W2 as someone else suggested. It works but is aux heat for now. may have to reinstall old thermostat, it nothing works. Let me know.

[Jenelyn_O]

Hi there,

@leschuler, thanks for reaching out. I'm sorry for the delay. Based on your previous wiring you have your white wire connected to W terminal. I suggest moving it from W2 to W1 terminal. Connect your yellow wire back to Y1 terminal. Make sure to turn the breaker off before touching the wires. After that, check if the issue persists. 

@Eztoth, please try to change your Nest Thermostat orientation from B orientation to O or O orientation to B. 

Best,

Jenelyn

[Jake]

Hey there,

I wanted to check in and see if you managed to see Jenelyn's post. 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.

Best regards,
Jake

[EmersonB]

Hey everyone,

@YannP, 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, Jenelyn and Jake.
 
Regards,
Emerson