No C Wire on Goodman Furnace

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  #1  
Old 06-15-19, 05:22 PM
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No C Wire on Goodman Furnace

I am trying to install a new Honeywell WiFi Thermostat, but have reached an impasse with the c wire connection. There is no C terminal in my furnace. From my thermostat I have RYWG and an extra wire (blue) which I traced to just outside the furnace. At that point the RYWG are wire nutted to 4 wires coming from furnace as shown in the last picture. I tried adding the blue to each of those connections and only the yellow/black connection resulted in power, but then AC would not turn on. From what Iíve read, I can run the blue wire to the ground (thick yellow wire) shown in the second picture. It is about 3-4 feet away so would I just buy additional wire and tie it in outside the furnace and screw the other side at the ground?

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Last edited by PJmax; 06-15-19 at 06:38 PM. Reason: resized/imported pictures
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  #2  
Old 06-15-19, 05:29 PM
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Welcome to the forums.

The links you left were to the location IN your phone where the pictures are stored. They have to be moved out of your phone to be seen. You either need to move them to a hosting site like imgur or post them here.

How-to-insert-pictures.
 
  #3  
Old 06-15-19, 05:35 PM
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Thank you! I think they uploaded correctly now.
 
  #4  
Old 06-15-19, 06:39 PM
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The yellow wire that connects the transformer to ground is the common terminal.
That means any metal in the system is Common as well as any one of the looks like light blue wires that connects to the C connection on the transformer.
 
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