
507324-01B
Page 24 of 32
Issue 1809
Figure 31. Integrated Control
(Automatic Hot Surface Ignition System)
Terminal Designations
120 HUM
Humidifier (120 VAC)
LINE
Input (120 VAC)
XFMR
Transformer (120 VAC)
EAC
Electronic Air Cleaner
(120 VAC)
COOL
Blower - Cooling Speed
(120 VAC)
HEAT
Blower - Heating Speed
(120 VAC)
PARK
Dead terminals to park all speed
taps
FLAME
Flame sensor
NEUTRALS Neutral Terminals (120 VAC)
3 AMP, 32 VAC FUSE
HEAT OFF DELAY JUMPER
Figure 32. Condensing Unit Thermostat Designations
(Refer to Specific Thermostat and Outdoor Unit)
* Note:
“R” Required on some outdoor units.
Indoor Blower Speeds
1. When the thermostat is set to “FAN ON,” the indoor
blower will run continuously on the heating speed
when there is no cooling or heating demand.
2. When the unit is running in the heating mode, the
indoor blower will run on the heating speed.
3. When there is a cooling demand, the indoor blower will
run on the cooling speed.
NOTE:
This control is equipped with a push button switch
for diagnostic code recall. The control stores the last 5 fault
codes in non-volatile memory. The most recent fault code
is flashed first, the oldest fault code is flashed last. There is
a 2 second pause between codes. When the push button
switch is pressed for less than 5 seconds, the control will
flash the stored fault codes when the switch is released.
The fault code history may be cleared by pressing the push
button switch for more than 5 seconds.