Carrier 48AJ Operating And Service Manual page 108

RED LED - STATUS
J1
J2
J3
J4
J5
J6
J7
POINT
POINT DESCRIPTION
NAME
INPUTS
GASFAN YAC Indoor Fan relay (fan request from YAC)
FSD Fire Shutdown switch input
G Thermostat 'G' input
W2 Thermostat 'W2' input
W1 Thermostat 'W1' input
Y2 Thermostat 'Y2' input
Y1 Thermostat 'Y1' input
CSB_A1 Compressor A1 current sensor
CSB_A2 Compressor A2 current sensor
CSB_B1 Compressor B1 current sensor
CSB_B2 Compressor B2 current sensor
Circuit A saturated
DP_A/SCTA
condensing pressure/temp
Circuit B saturated
DP_B/SCTB
condensing pressure/temp
Circuit A saturated
SP_A/SSTA
suction pressure/temp
Circuit B saturated
SP_B/SSTB
suction pressure/temp
RAT Return air temperature
SA_TEMP Supply air temperature
OAT Outdoor air temperature
SPT Space temperature (T55/56)
SPTO Space temperature offset (T56)
IAQ,/IAQMINOV IAQ analog input
FLTS Filter Status
OUTPUTS
CMPB2 Compressor B2
CMPB1 Compressor B1
CMPA2 Compressor A2
CMPA1 Compressor A1
CONDFANB Condenser fan B
CONDFANA Condenser fan A
HS2 Heat stage 2
HS1 Heat stage 1
HIR Heat interlock relay
SF Supply fan
ALRM Alarm output relay
GREEN LED-
LEN (LOCAL EQUIPMENT NETWORK)
CEPL130346-01 HK 50AA029 CE BO 430346
STATUS
LEN
Fig. 22 — Main Base Board (MBB)
Table 106 — Main Control Board (MBB) Inputs and Outputs
I/O POINT
NAME
DI1
DI2
DI3
DI4
DI5
DI6
DI7
DIG1
DIG2
DIG3
DIG4
AN1
AN2
AN3
AN4
AN5
AN6
AN7
AN8
AN9
AN10
AN11
RLY 1
RLY 2
RLY 3
RLY 4
RLY 5
RLY 6
RLY7
RLY 8
RLY 9
RLY 10
RLY 11
YELLOW LED -
CCN (CARRIER COMFORT NETWORK)
A48-7811
J8
PLUG AND PIN
SIGNAL PIN(S)
REFERENCE
J6, 3-4
J6, 5-6
J7, 1-2
J7, 3-4
J7, 5-6
J7, 7-8
J7, 9-10
J9, 10-12 10=5v, 11=Vin, 12=GND
J9, 7-9 7=5v, 8=Vin, 9=GND
J9, 4-6 4=5v, 5=Vin, 6 =GND
J9, 1-3 1=5v, 2=Vin, 3=GND
21=5v, 22=Vin, 23=GND
J8, 21-23
(thermistor 21-22)
24=5v, 25=Vin, 26=GND
J8, 24-26
(thermistor 24-25)
15=5v, 16=Vin, 17=GND
J8, 15-17
(thermistor 15-16)
18=5v, 19=Vin, 20=GND
J8, 18-20
(thermistor 18-20)
J8, 9-10
J8, 11-12
J8, 13-14
J8, 1-2
J8, 3-4
J8, 5-6
J8, 7-8
J10, 20-21 20 = RLY1A (=RLY2A), 21 = RLY1B
J10, 22-23 22 = RLY2A (=RLY1A), 23 = RLY2B
J10, 24-25 24 = RLY3A (=RLY4A), 25 = RLY3B
J10, 26-27 26 = RLY4A (=RLY3A), 27 = RLY4B
J10, 10-11 10 = RLY5A (=RLY6A), 11 = RLY5B
J10, 12-13 12 = RLY6A (=RLY5A), 13 = RLY6B
J10, 14-16 14 = 15 = RLY7A, 16 = RLY7B
J10, 17-19 17 = 18 = RLY8A, 19 = RLY8B
J10, 4-6 4 = 5 = RLY9A, 6 = RLY9B
J10, 7-9 7 = 8 = RLY10A, 9 = RLY10B
J10, 1-3 1 = 2 = RLY11A, 3 = RLY11B
108
INSTANCE JUMPER (SET TO 1)
J9
PORT STATE
4 0 = 24vac, 1= 0vac
6 0 = 24vac, 1= 0vac
2 0 = 24vac, 1= 0vac
4 0 = 24vac, 1= 0vac
6 0 = 24vac, 1= 0vac
8 0 = 24vac, 1= 0vac
10 0 = 24vac, 1= 0vac
0 = 5vdc, 1 = 0vdc
0 = 5vdc, 1 = 0vdc
0 = 5vdc, 1 = 0vdc
0 = 5vdc, 1 = 0vdc
(0-5vdc, thermistor, ohms)
(0-5vdc, thermistor, ohms)
(0-5vdc, thermistor, ohms)
(0-5vdc, thermistor, ohms)
9 (thermistor, ohms)
11 (thermistor, ohms)
13 (thermistor, ohms)
1 (thermistor, ohms)
3 (thermistor, ohms)
5 (thermistor, ohms)
7 (thermistor, ohms)
1 = Closes RLY1A/RLY1B
1 = Closes RLY2A/RLY2B
1 = Closes RLY3A/RLY3B
1 = Closes RLY4A/RLY4B
1 = Closes RLY5A/RLY5B
1 = Closes RLY6A/RLY6B
1 = Closes RLY7A/RLY7B
1 = Closes RLY8A/RLY8B
1 = Closes RLY9A/RLY9B
1 = Closes RLY10A/RLY10B
1 = Closes RLY11A/RLY11B
J10