Trane TCONT203AS42MA - Or 2 Stage Heat;Cool Package with Variable Speed Blower; Or 2 Stage Heat Pump Package with Non VSB

Installation and User Guide
8 Pub. No. 18HD50D1-1A-EN 12/2018 Part No. 37-7768003
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/Cool Package with Variable Speed Blower
Indoor UnitThermostat
Rc
Rh
O/B
Y
G
W/E
C
L
Y2
W2
R
Y1
G
W1
B
Y2
W2
W2
BK
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 Package with Variable Speed Blower
Indoor UnitThermostat
Rc
Rh
O/B
Y
G
W/E
C
L
Y2
W2
R
Y1
G
W1
B
Y2
W2
W2/X2
O/B