Carrier WEATHERMAKER 50A3050 - Page 129

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Table 106 — Humidi-MiZer Control Board (EXV) Inputs and Outputs
POINT
NAME
POINT DESCRIPTION
I/O POINT
NAME
PLUG AND PIN
REFERENCE
SIGNAL PIN(S) PORT STATE
INPUTS
CCT Air Temp Lvg Evap Coil AN1 J5, 5-6 5=Vin, 6=GND (Thermistor, ohms)
AN2 J5, 7-8 7=Vin,8 =GND (Thermistor, ohms)
AN3 J5, 9-10 9=Vin, 10=GND (Thermistor, ohms)
AN4 J5, 11-12 11=Vin, 12=GND (Thermistor, ohms)
AN5 J5, 1-2 1=Vin, 2=GND 0 to 20mA Input
AN6 J5, 3-4 3=Vin, 4=GND 0 to 20mA Input
OUTPUTS
COND_EXV Condenser EXV Position OUTA
Coil1A J6,1 1 HI Z when P5.7 and P5.6 = 0
+12vdc when P5.7 = 1 and P5.6 = 0
0vdc when P5.7 = 0 and P5.6 = 1
PROHIBITED when P5.7 = 1 and P5.6 = 1
Coil2A J6,2 2 HI Z when P5.5 and P5.4 = 0
+12vdc when P5.5 = 1 and P5.4 = 0
0vdc when P5.5 = 0 and P5.4 = 1
PROHIBITED when P5.5 = 1 and P5.4 = 1
12VDC J6, 3 3 Power Output
Coil3A J6,4 4 HI Z when P5.3 and P5.2 = 0
+12vdc when P5.3 = 1 and P5.2 = 0
0vdc when P5.3 = 0 and P5.2 = 1
PROHIBITED when P5.3 = 1 and P5.2 = 1
Coil4A J6,5 5 HI Z when P5.1 and P5.0 = 0
+12vdc when P5.1 = 1 and P5.0 = 0
0vdc when P5.1 = 0 and P5.0 = 1
PROHIBITED when P5.1 = 1 and P5.0 = 1
COND_EXV Bypass EXV Position OUTB
Coil1B J7,1 1 HI Z when P8.7 and P8.6 = 0
+12vdc when P8.7 = 1 and P8.6 = 0
0vdc when P8.7 = 0 and P8.6 = 1
PROHIBITED when P8.7 = 1 and P8.6 = 1
Coil2B J7,2 2 HI Z when P8.5 and P8.4 = 0
+12vdc when P8.5 = 1 and P8.4 = 0
0vdc when P8.5 = 0 and P8.4 = 1
PROHIBITED when P8.5 = 1 and P8.4 = 1
12VDC J7,3 3 Power Output
Coil3B J7,4 4 HI Z when P8.3 and P8.2 = 0
+12vdc when P8.3 = 1 and P8.2 = 0
0vdc when P8.3 = 0 and P8.2 = 1
PROHIBITED when P8.3 = 1 and P8.2 = 1
Coil4A J7,5 5 HI Z when P8.1 and P8.0 = 0
+12vdc when P8.1 = 1 and P8.0 = 0
0vdc when P8.1 = 0 and P8.0 = 1
PROHIBITED when P8.1 = 1 and P8.0 = 1