Wiring issue because lables were old and would not stick together on the wires.

[RichardGU]

The original thermostat is a Honeywell Model TH6220U2000   2341.  The first part to the dash is the honelwell and the last part after the dash is attached to the nest.

     Honeywell                                                             NEST

1.  A yellow was attached to the Y1 terminal - Yellow to Y1

2.  A green was attached to G                           -  Green to G

3.  A blue was attached to C                               -  Blue to C

4.  A red was attached to R                                -  Red to Rh

5.  Two wires remain a Black and a White      -  Where to White and Black go.  Some where I read that if white is attached to not attach.

Please help.

[GBD]

Here is a link to the installation manual for your Honeywell thermostat. On page 3 is the layout of the terminals in the unit that you can use to determine which terminals your black and white wires came from came from.

https://digitalassets.resideo.com/damroot/Original/10011/33-00181EFS.pdf?rv=aad05089f92145a08d5059f4...

[moralesvicente]

Hello RichardGU, 

Thank you for taking an interest in our community. I understand that you have some concerns regarding wiring installation. No worries; it’s a pleasure to assist you. 

To get a better understanding of the situation, please help me out by answering some questions.

• What type of HVAC system do you have? (Heating and cooling, heating only, or cooling only)
• Could you share a picture of your wiring system that is installed on your Honeywell thermostat? 

If you have any additional details or information that might be helpful, please feel free to share them with me.

Regards,

Daniel