Carrier WeatherExpert 48N2 Controls, Start-Up, Operation, Service, And Troubleshooting page 156

Table 99 — Compressor Expansion Board (CXB) Inputs and Outputs
POINT NAME POINT DESCRIPTION
INPUTS
CSB_A3 Compressor A3 Feedback
CSB_B3 Compressor B3 Feedback
CSB_A4 Compressor A4 Feedback
CSB_B4 Compressor B4 Feedback
OUTPUTS
HS9 Heat Relay 9
HS10 Heat Relay 10
CMPB4 Compressor B4 Relay
CMPB3 Compressor B3 Relay
CMPA4 Compressor A4 Relay
CMPA3
Compressor A3 Relay
Table 100 — Expansion Valve Control Board A (EXV-A) Inputs and Outputs
POINT NAME POINT DESCRIPTION
INPUTS
CASTEXV1
Cir A EXV1 Suction Temperature
CASTEXV2 Cir A EXV2 Suction Temperature
LT_A Circuit A Liquid Temperature
SFBYIN Supply Fan Bypass Input
Not Used Not Used
Not Used
Not Used
OUTPUTS
CA_EXV1 Circuit A EXV 1
CA_EXV2 Circuit B EXV 1
Table 101 — Expansion Valve Control Board B (EXV-B) Inputs and Outputs
POINT NAME POINT DESCRIPTION
INPUTS
CBSTEXV1 Cir B EXV1 Suction Temperature
CBSTEXV2 Cir B EXV2 Suction Temperature
LT_B Circuit B Liquid Temperature
PEBYIN
PE/Ret Fan Bypass Input
Not Used
Not Used
Not Used Not Used
OUTPUTS
CB_EXV1 Circuit A EXV 2
CB_EXV2 Circuit B EXV 2
Table 102 — Expansion Valve Control Board C (EXV-C) Inputs and Outputs
POINT NAME POINT DESCRIPTION
INPUTS
Not Used Not Used
Not Used
Not Used
Not Used Not Used
Not Used Not Used
Not Used Not Used
Not Used Not Used
OUTPUTS
COND_EXV
Condenser EXV Position
BYP_EXV Bypass EXV Position
TYPE OF I/O I/O POINT NAME
Digital Input
Digital Input
Digital Input
Digital Input
Relay
Relay
Relay
Relay
Relay
Relay
TYPE OF I/O I/O POINT NAME
Thermistor
Thermistor
Thermistor
Thermistor
Transducer (4-20mA)
Transducer (4-20mA)
Stepper Motor
Stepper Motor
TYPE OF I/O I/O POINT NAME
Thermistor
Thermistor
Thermistor
Thermistor
Transducer (4-20mA)
Transducer (4-20mA)
Stepper Motor
Stepper Motor
TYPE OF I/O I/O POINT NAME
Thermistor
Thermistor
Thermistor
Thermistor
Transducer (4-20mA)
Transducer (4-20mA)
Stepper Motor
Stepper Motor
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CONTROL BOARD
DIG1 CXB
DIG2 CXB
DIG3 CXB
DIG4 CXB
RLY1 CXB
RLY2 CXB
RLY3 CXB
RLY4 CXB
RLY5 CXB
RLY6 CXB
CONTROL BOARD
AN1 EXV-A
AN2 EXV-A
AN3 EXV-A
AN4 EXV-A
AN5 EXV-A
AN6 EXV-A
EXV-1 EXVA
EXV-2 EXVA
CONTROL BOARD
AN1 EXV-B
AN2 EXV-B
AN3 EXV-B
AN4 EXV-B
AN5 EXV-B
AN6 EXV-B
EXV-1 EXVB
EXV-2 EXVB
CONTROL BOARD
AN1 EXV-C
AN2 EXV-C
AN3 EXV-C
AN4 EXV-C
AN5 EXV-C
AN6 EXV-C
EXV-1 EXV
EXV-2 EXV
CONNECTOR PIN NO.
J5, 10-12
J5, 7-9
J5, 4-6
J5, 1-3
J6, 1-2
J6, 3-4
J6, 5-6
J6, 7-8
J6, 9-11
J6, 12-14
CONNECTOR PIN NO.
J5, 5-6
J5, 7-8
J5, 9-10
J5, 11-12
J5, 1-2
J5, 3-4
J6, 1-5
J7, 1-5
CONNECTOR PIN NO.
J5, 5-6
J5, 7-8
J5, 9-10
J5, 11-12
J5, 1-2
J5, 3-4
J6, 1-5
J7, 1-5
CONNECTOR PIN NO.
J5, 5-6
J5, 7-8
J5, 9-10
J5, 11-12
J5, 1-2
J5, 3-4
J6, 1-5
J7, 1-5