Question about Heating & Cooling
I currently have a Trane 3AAT80B1A1 thermostat that I'm replacing with a Trane/Honeywell TH8320U.
My current thermostat has R (red), T (tan), O (orange), G (green), Y (yellow), X2 (black), B (blue), W (white), and U (which looks like a metal wire coming out.
The NEW thermostat (Trane TH8320U) has SEVERAL different Inputs. On the left outside input it has Y2, F, X2, W1, S1, S2.
On the left inside input it has Y2, blank, blank, W2, S1, S2.
On the right inside input it has RC, R, W1, Y, G, B
On the right outside input it has RC, R, O, Y, G, B
Any experts out there have any ideas on how to wire my old thermostat to my new one? Thanks!!!!!
Use the outside designations for heat pump, and inside for standard, I would assume a heat pump since you have more than five wires attached to it now. Use the colors of the wire to match to the designations, use tan for y2, black for w2 rc and rh should already have a factory jumper. I would have to trace out the "U" and see where it terminates, I have not seen a bare wire on a stat in 27 years of doing this. before powering, verify the tan and black at the indoor unit circuit board and see if they are landed on the terminals designated at the stat. hope this helps
Posted on Jul 27, 2009
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Posted on Jan 02, 2017
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