Ecobee3 Lite Install Help

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Old 07-08-19, 08:34 AM
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Ecobee3 Lite Install Help

I am needing some help on installing a new Ecobee 3 lite thermostat to my Carrier model 58GS100-2 unit. I have 4 wires in my at the thermostat wall. They are connected to the R, W, Y, and G terminals. According to the Ecobee instructions I need to install the PEK. When looking at the control board for my unit there are both a GC and GH connection. The GH has what looks like a factory installed jumper connected to R. I need some help in determining if I hook the G from the PEK to the GC and leave the GH to R alone? From researching online I believe that GC = cooling and GH = heating. I do not have much HVAC experience and want to confirm I am installing this properly. Attached is a picture of the control board on my unit.

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Last edited by PJmax; 07-08-19 at 06:30 PM. Reason: resized picture
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Old 07-08-19, 10:40 AM
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You are correct. "GC" is the standard "G" and leave GH alone.
 
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