Common wire solutions

[Tbone29650]

I have a Goodman with ac and gas heat. after several years of working fine the battery is starting to fail and after reading multiple threads I connected the blue wire to C at the air handler and thermostat but get a reading at the thermostat that shows no power to the C. Should I connect the blue wire differently at the air handler?

[Jenelyn_O]

Hi Tbone29650,

Thanks for reaching out and for being a step ahead of us. A few questions: what type of Nest Thermostat do you have? You can visit this link to check what type of thermostat you have. Could you please share the photo of the wires connected to your control board and to your thermostat? Also, what is the exact message and code displayed on your thermostat screen? 

Best,

Jenelyn

[Jenelyn_O]

Hi there,

I wanted to follow up if you still need help. Please let me know if you’re still having any concerns or questions from here, as I would be happy to take a closer look and assist you further.

Thanks,

Jenelyn

[Jenelyn_O]

Hello there,
 

We haven't heard from you in a while so we'll be locking this thread if there is no update within 24 hours. If you need assistance or want to discuss topics, feel free to start a new thread.
 

Regards,

Jenelyn

[Tbone29650]

Hello! I’m going to get the photos from the control board as well as the thermostat today and send them to you. I really appreciate the help!

Tom

[Jenelyn_O]

Hey Tbone29650,
 

Perfect! Please feel free to send those photos here. I'd be happy to keep this thread open.
 

Thanks,

Jenelyn

[Jenelyn_O]

Hi there,

I just want to check if the photos are ready or if you still need help, as I'll be willing to assist you further. 

Best,
Jenelyn

[Tbone29650]

I have the pics but don’t know how to attach to this reply. Please send another message and I’ll try and reply in my email

[Jenelyn_O]

Hey Tbone29650,
 

Gotcha. Please click this link and at the bottom part hit reply and select the camera icon to send a photo.
 

Regards,

Jenelyn

[Tbone29650]

Hmmm, I don’t see a camera icon…

[Jenelyn_O]

Hello there,

Thanks for trying. Could you please tell me what are the labels on each terminal of your control panel and what is the color of the wire connected to it? Check as well if you could find the model number of your HVAC system. 

Regards,
Jenelyn

[Tbone29650]

The control board has the following labels:

YWRGC

Y - a red wire from the ac outside and the yellow wire to the thermostat and connected to the Y at the thermostat 

W - white wire to the thermostat and connected to the W

R - red wire to the thermostat and connected to the R

G - a green wire to the thermostat and connected to the G

C - a white wire to the ac outside and a blue wire to the thermostat and connected to the C

the thermostat shows that all are connected but not the blue wire connected to C

I have a Goodman unit with the air handler, gas furnace and evaporator coil under the house and the compressor and condenser coil outside.

I believe the Model numbers are:

A/C - GSX160301

Furnace - GMSS960803BN

3636 Hirizontal Butt Up - CHPF3636B6

[Markjosephp]

Hello folks,

If there’s anything else I can help you with, please let me know.

Thanks for the help here, Jenelyn.

We appreciate your effort in listing them down, @Tbone29650. Please make sure that the C wire on your thermostat's base is on the right terminal and properly connected. In line with this, could you please check the power readings on your actual thermostat's Technical Info?

Regards,

Mark

[Jenelyn_O]

Hi there,

Chiming in — could you please share with us your Nest Thermostat power readings? 

I appreciate your help, Mark. 

Best,

Jenelyn

[Tbone29650]

Hey Mark

I’m away from home at the beach until the 29th 

Can I get that from my app or only the actual thermostat? If from the app how do I find it? I looked and don’t see anything except the battery power. 

Thanks!!

[Jenelyn_O]

Hey Tbone29650,

Thanks for getting back to us. Could you please describe what type of Nest Thermostat you have or what application you're using?

Regards,

Jenelyn

[Tbone29650]

It’s a nest learning gen 3 and I’m using the best app on an iPhone 

[Jenelyn_O]

Hi there,
 

Thanks for the follow up information. You will need to have the Nest Thermostat in front of you since you can only get the power readings in the actual device.
 

Best,

Jenelyn

[Jenelyn_O]

Hello there,

Checking if you still need help, please let us know so we can further assist you. 

Thanks,

Jenelyn

[Jake]

Hey Tbone29650,

I want to ensure you are good to go. Please let me know if you are still having trouble, as I will be locking the thread in 24 hours due to inactivity.

Best regards,
Jake