Can’t figure out how to wire Bryant 2 Stage fired air unit

[Hague]

Bryant model 341519-701.  I need to start from scratch because I don’t know the wiring configuration from the previous thermostat

[CoolingWizard]

The wire you have in *OB is to be defined as W2, stage 2 heating. Other than that, all OK.

AC Cooling Wizard

[Hague]

Thank you for your feedback. So on the thermostat wiring at setup I need to identify as such correct?

[Hague]

How to I change the nomenclature without going through the whole setup process again 

[CoolingWizard]

@Hague , Sorry I did not get back to you sooner.  The way to redefine the function, is to go into Pro Setup.  The. Choose the *OB wedge, and select it, then then set the function as stage 2 Heat. 

AC Cooling Wizard. 

[Hague]

I can not find Pro Setup in my thermostat settings?  It seems like I’ve come across it in the past and it requires an ID number to access it. Will the furnace perform as it should without relabeling?

[CoolingWizard]

@Hague You need to go to SETTINGS > EQUIPMENT > CONTINUE > CONTINUE > PRO SETUP

AC Cooling Wizard

[Hague]

• iI don’t see an option for equipment. I have thermostat > equipment >
• aux heat lockout 
• Compressor lockout 
• heat configuration 
• heat pump 
• emergency heat 
• wiring
• system details 

I clicked on wiring and it asked if I want add or subtract wires. I clicked add and it said add “C” wire?

[CoolingWizard]

@Hague , what I would do is on the control board, move the Blue with to join the White wire on C. Then get the green wires not connected and place that the G where the blue wire was.  Nest, at the thermostat, move the blue wire to C and pull the green wire out of the wall and place it on G. Last, turn the power back on.  

AC Cooling Wizard

[Hague]

I’ve only got 5 wires. No green wire 

[CoolingWizard]

Ok, bummer. Perhaps you should get the a Nest Power Adapter. 

AC Cooling Wizard

[Hague]

• I do have a nest power adapter available for installation. 
  I would like to install it but not sure which wires to use given the current wire colors I have. 

[Hague]

so I installed the power adapter 

yellow to yellow inline

red to red inline 

white to “C”

 the HVAC unit comes on but the compressor does not. Just the fan is running. I  removed the y stat on the app and restarted the thermostat and reinstalled the the device. Still just the fan running 

[Hague]

How do I add a photo?  I don’t see it as an option. I’m now getting AC when in heat mode 

[CoolingWizard]

@Hague , here is a picture of the wiring if the Nest Power Adapter using the Y wire.  

AC Cooling Wizard

[Hague]

I have connected everything as depicted in the picture and everything seems to be working except when I set the thermostat to HEAT mode and raise the temoerature the fan comes on but the furnace does not light the gas therefore no warm air

[CoolingWizard]

Remove your Nest Display, then remove the gray wire from W. Now make sure the bare copper wire is straight, no bends.  Then reinsert the Gray Wire into the W connector as far as it will go in.   Replace the display and test the heat again. Also has a test, you can touch the gray wire to the bare copper of the R wire and hold it there, if the heat comes on, then all is OK with your furnace.  If the heat does not come on, there is a problem with your furnace. If you want to be able to check the furnace, use a metal paper clip and put the red and gray wires in the paper clip. 

AC Cooling Wizard

[zoeuvre]

Hi folks,

@Hague, thanks for reaching out. I want to check if you managed to see the response above. Please let us know if you still have questions or concerns, as we'll be willing to assist you further. 
 

I appreciate all your help. @CoolingWizard. 

Best,

Zoe

[Hague]

I installed the C adapter in my furnace and now I can’t get the heater to come on. Ac works though. 

[zoeuvre]

Hi Hague, 

I'll merge this thread with the main post, where all the updates will be posted, so we can communicate effectively. You can follow the main thread for news because this one will be locked automatically once merged.
 

All the best,

Zoe

[CoolingWizard]

@Hague , can you get me the model number of your air handler so I can look up the control board.  I need make sure the brown wire at the top is labeled W2.  

AC Cooling Wizard

[Hague]

I have reset the thermostat to factory default and restarted it and it is working fine. Thank you for your assistance 

[Alex_S]

Hi there,
 

We appreciate your assistance, @CoolingWizard.

@Hague, we’re glad to hear that your Nest Thermostat is now working. Thanks for letting us know how it was fixed! Should you have any further questions or concerns, please feel free to ask us, otherwise; we’ll be locking this thread in 24 hrs. 

Warmly, 
Alex