Trane XL19i-APG02-EN - Cooling Split System and AY28 X079 Evaporator Defrost Control; Heat Pump Split System and AY28 X084 Evaporator Defrost Control

Typical wiring when using the evaporator defrost control (EDC) for operation as specified on page 3.
Cooling Split System and AY28X079 Evaporator Defrost Control
R
Y1
Y2
G
W
W2
B
Red (R)
Y
Y Low
Green (G)
White (W1)
White (W2)
White (W3)
Blue (B)
Orange (O)
R
Y 2
Y 1
G
W1
X2
B
O
EDR-1
EDC
EDR
Y 1
Red (R)
Y low
Green (G)
White (W1)
White (W2)
White (W3)
Blue (B)
EDC
Heat Pump Split System and AY28X084 Evaporator Defrost Control
2TTZ9
TWE-E
Thermostat
TWE-E
Pg. 4
B
R
Y
Y
Red
Yellow / Red
Yellow
X2
Blue
Orange
Thermostat
XT500C
2TWZ9
This diagram indicates the correct wiring for the evaporator defrost control. Refer to the installation manual for complete control wiring.