Trane XR202 - 4.5 Wiring Diagrams; Cooling with GAT2, GAM2 & TEM3, 4

Installation and User Guide
8 Pub. No. 18HD51D1-1C-EN 09/2020 Part No. 37-7769005
NOTES:
1) Wire third party condensate overow
switches between Y of the thermostat
and Y1 of the airow control board
2) X2 is required to energize aux heat
during defrost
Cooling with GAT2, GAM2 & TEM3, 4
Indoor Unit Outdoor UnitThermostat
Rc
Rh
O/B
Y
G
W
C
R
G
W1
B
B
Y/Y1