Pub. No. 18HD55D1-1C-EN 09/2020
Part No. 37-7790003
7
Trane XR103 Non-Programmable Thermostat
NOTES:
1) Wire third party condensate overflow
switches between Y of the thermostat
and Y1 of the airflow control board
2) X2 is required to energize aux heat
during defrost
Heat Pump with GAT2, GAM2, TEM3, TEM4
Indoor Unit
Outdoor Unit
Thermostat
R
O/B
Y
G
E
C
L
W2
R
O
G
W
B
B
X2
Y/Y1
R
W2
W3
NOTES:
1) Wire third party
condensate overflow
switches between Y of the
thermostat and Y1 of the
airflow control board
2) X2 is required to energize
aux heat during defrost
Heat Pump with GAM5A OR TAM4 OR GAF2-36M
Indoor Unit
Outdoor Unit
Thermostat
R
O/B
Y
G
E
C
L
W2
R
O
G
W1
B
B
X2
Y/Y1
R
W2
W3
Y2
Y0
O
Y1