topic Nest 3rd gen to Trane heat pump TEM4A0C42S41SAA in Nest Thermostats

Nest 3rd gen to Trane heat pump TEM4A0C42S41SAA

MotorBikeMike — Sun, 14 May 2023 20:54:04 GMT

My original thermostat has 7 wires connected as shown in the first photo.

I've also included a photo of the nest unit. On the left side of the unit I have the wires attached on the right side I think the White wire should go to W1 and the Blue to C - I don't know where to connect the brown wire. (The black was not attached to anything and also was not stripped back.

A guess on my part is the Brown wire is not needed but that is a Wild Guess. If you know the correct answer I would be appreciate the help.

Thanks,

Mike

Re: Nest 3rd gen to Trane heat pump TEM4A0C42S41SAA

MotorBikeMike — Sun, 14 May 2023 20:57:18 GMT

I meant to say the White wire should go to W1.

Thanks,

Re: Nest 3rd gen to Trane heat pump TEM4A0C42S41SAA

Patrick_Caezza — Sun, 14 May 2023 21:54:25 GMT

@MotorBikeMike

Yellow - Y to Y1

Green - G to G

Orange - O/B to OB

Red - R to Rc

White - W2 to W2 (aet as AUX heat)

Blue - C to C

Brown - E to * (set as emergency heat)

Re: Nest 3rd gen to Trane heat pump TEM4A0C42S41SAA

MotorBikeMike — Sun, 14 May 2023 22:26:52 GMT

Thank you.

1. Is W2 set as aux heat by default in nest or do I need to make some adjustment.

2. is * set as emergency heat by default in next or is there an adjustment that I need to make.

Thank you.

Re: Nest 3rd gen to Trane heat pump TEM4A0C42S41SAA

MotorBikeMike — Mon, 15 May 2023 01:47:45 GMT

@Patrick_Caezza

Thank you.

1. Is W2 set as aux heat by default on the nest thermostat or do I need to make adjustment in the setup software.

2. is * set as emergency heat by default in next or is there an adjustment that I need to make.

Thank you.

Re: Nest 3rd gen to Trane heat pump TEM4A0C42S41SAA

Patrick_Caezza — Mon, 15 May 2023 02:51:09 GMT

@MotorBikeMike

As you are setting it up, it will ask you to verify those terminals.

Re: Nest 3rd gen to Trane heat pump TEM4A0C42S41SAA

Jenelyn_O — Wed, 17 May 2023 21:34:31 GMT

Hi there,

Thanks for posting in the Google Nest Community forum. I hope you get the answer you're looking for. Please let us know if you still need help, as I'll be willing to assist you further.

I appreciate your help, @Patrick_Caezza.

Best,

Jenelyn

Re: Nest 3rd gen to Trane heat pump TEM4A0C42S41SAA

MotorBikeMike — Thu, 18 May 2023 01:08:01 GMT

The Nest unit seems to be working fine thanks to

@Patrick_Caezza.

Cheers,

Mike

Re: Nest 3rd gen to Trane heat pump TEM4A0C42S41SAA

zoeuvre — Thu, 18 May 2023 14:52:04 GMT

Hi MotorBikeMike,

As we got our resolution here, I'm going to mark this thread as complete. I'll be locking this thread if we won't hear back from you again in 24 hours. Should that happen, feel free to create a new one if you have more questions or have other concerns in the future.

All thanks for your help, @Patrick_Caezza and Jenelyn.

Cheers,

Zoe