Trane XR203 - Or 2 Stage Heat Pump with S9 V2 Furnace; Stage Heat Pump with Variable Speed Gas Furnace

Pub. No. 18HD50D1-1A-EN 12/2018 Part No. 37-7768003 7
Trane XR203 Programmable Thermostat
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
1 or 2 Stage Heat Pump with S9V2 Furnace
Indoor Unit Outdoor UnitThermostat
Rc
Rh
O/B
Y
G
W/E
C
L
Y2
W2
R R
OO
Y1
G
W1
B
Y2
W2
W2
W2
W3
W2
BK
B
X2
Y2
Y/Y1
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
Heat Pump with Variable Speed Gas Furnace
Indoor Unit Outdoor UnitThermostat
Rc
Rh
O/B
Y
G
W/E
C
L
Y2
W2
R R
O
Y
G
W1
B
W2
W2
B
X2
Y