Goodman ComfortNet ASXC Series Service Instructions Manual page 29

PRODUCT DESIGN
NOTE: AVPTC air handlers are factory-sealed to achieve a
2% or less leakage rate at 1.0" water gauge external duct
static pressure.
Communicating Unitary Control (UC) PCB
The Communicating System Unitary Control PCB is a micro-
processor-based control for heat pump and air conditioning
condensing units with single-phase compressors up to 5 ton
capacity operating on standard residential or Delta and Wye
commercial power. The control incorporates the basic func-
tionality of existing defrost controls, outdoor thermostats,
contactors, compressor staging controls, short cycle con-
trols, line voltage monitors, Comfort Alert™ or CoreSense
Module (dependent upon which module you are using), two
speed condenser fan relays and the Active Protection com-
ponent of enabled thermostats. The control is designed to
work as part of a fully communicating HVAC system with 4
wires. The control also supports legacy 24VAC thermostat
inputs for Y1, Y2, O and 24VAC outputs for RVS, W1, and L
for non-communicating systems. Outputs include compres-
sor power, compressor stage select, and outdoor fan high
and outdoor fan low speed. System inputs include high/low
pressure switches, as well as thermistor inputs for outdoor
coil temperature and outdoor air temperature.
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