Nest Thermostat does not register my recently added AC system | HVAC Site - Professional HVAC Contractors Forum
![How To Solve Nest Thermostat Error E157 - The Nest thermostat isn't physically detecting your Y1 - YouTube How To Solve Nest Thermostat Error E157 - The Nest thermostat isn't physically detecting your Y1 - YouTube](https://i.ytimg.com/vi/ZXvTHTHT1iY/maxresdefault.jpg)
How To Solve Nest Thermostat Error E157 - The Nest thermostat isn't physically detecting your Y1 - YouTube
![My Nest isn't detecting my OB wire and is blowing hot air, but our outdoor heat pump is blowing cold air. Any ideas for next steps? Pic of wires for reference : My Nest isn't detecting my OB wire and is blowing hot air, but our outdoor heat pump is blowing cold air. Any ideas for next steps? Pic of wires for reference :](https://preview.redd.it/my-nest-isnt-detecting-my-ob-wire-and-is-blowing-hot-air-v0-me3qw1vhp4sa1.jpg?width=640&crop=smart&auto=webp&s=37680ebe4384cec553bad8cb99c42d9a7ba58a4b)
My Nest isn't detecting my OB wire and is blowing hot air, but our outdoor heat pump is blowing cold air. Any ideas for next steps? Pic of wires for reference :
![Can anyone help with figuring out wiring for the Thermostat? O/B vs O and B separate - Home - Wyze Forum Can anyone help with figuring out wiring for the Thermostat? O/B vs O and B separate - Home - Wyze Forum](https://global.discourse-cdn.com/wyze/optimized/3X/0/2/0216c8cdde30ac968349206e3900b9935dd2429a_2_768x1024.jpeg)
Can anyone help with figuring out wiring for the Thermostat? O/B vs O and B separate - Home - Wyze Forum
![Heat Pump without OB wire. How to wire to electronic thermostats? (like Nest) - DoItYourself.com Community Forums Heat Pump without OB wire. How to wire to electronic thermostats? (like Nest) - DoItYourself.com Community Forums](https://www.doityourself.com/forum/attachments/thermostatic-controls/10787d1364564056-heat-pump-without-ob-wire-how-wire-electronic-thermostats-like-nest-old-thermostat-wiring-2.jpg)
Heat Pump without OB wire. How to wire to electronic thermostats? (like Nest) - DoItYourself.com Community Forums
![wiring - How should I connect my Nest thermostat to correct heating behavior? - Home Improvement Stack Exchange wiring - How should I connect my Nest thermostat to correct heating behavior? - Home Improvement Stack Exchange](https://i.stack.imgur.com/wPpgq.jpg)