Goodman CONDENSING UNIT HEAT PUMP Installation & Service Reference page 6

The unit also has legacy 24 VAC inputs to support non-com-
municating systems. Route control wires through the low volt-
age port and terminate in accordance with the wiring diagram
provided inside the control panel cover.
Voltage Ports
NOTE: For two-stage units, refer to the Installation Instructions
supplied with the variable speed indoor units for field wiring
connections.
HEAT PUMP
C
B
L
U
E
HIGH
VOLTAGE
PORT
NOTE: If the heat pump unit is wired in the communicating
mode together with the compatible communicating indoor unit
and CTK0*AA communicating thermostat, then the
LOW communicating thermostat is able to search and identify the
VOLTAGE
condensing unit when power is applied to the system. Refer to
PORT
the Installation Manual of the optional communicating thermostat
for more information.
Use the dipswitch to select defrost time interval (30, 60, 90,
120 minutes). Factory default setting is 30 minutes. The
maximum defrost cycle time is 10 minutes.
6
COMMUNICATING
THERMOSTAT
R 2 C R
1
R W B
E H L
D T K
Communicating Thermostat
with Low Voltage Wires to Heat Pump
2
1
INDOOR
UNIT
C
R
2
1