![background image](http://html1.mh-extra.com/html/carrier/48fk/48fk_controls-operation-and-troubleshooting_2560983004.webp)
Table 2 — Pin Terminal Connector J2
Status Switch Inputs
CONNECTOR J2
TERMINAL NO.
STATUS SWITCH
UNIT SIZE
034-104
1,2
Oil Pressure,
Circuit 2
Jumpered
3,4
Oil Pressure,
Circuit 1
Jumpered
7,8
Loss Of Charge,
Circuit 2
LPS2
9,10
Loss of Charge,
Circuit 1
LPS1
13,14
Economizer
Changeover
EC
15,20
Compressor Fault
Signal
CR2
15,24
Compressor Fault
Signal
CR1
LEGEND
CR
— Control Relay
EC
— Enthalpy Control
LPS — Low-Pressure Switch
NOTE: Terminal numbers 5, 6, 11, 12, 16-19, and 21-23 are not used
on these units.
LEGEND
T
—
Thermistor
Field Wiring
Accessory
Fig. 2 — Pin Terminal Connector J1
Thermistor Inputs
LEGEND
CR
— Control Relay
EC
— Enthalpy Control
LPS — Low-Pressure Switch
Fig. 3 — Pin Terminal Connector J2
Status Switch Inputs
LEGEND
IN
— Input
Factory Wiring
P
— Potentiometer
Field Wiring
RNT — Return
Accessory
SW
— Switch
Fig. 4 — Pin Terminal Connector J3
Potentiometer Inputs
4
Summary of Contents for 48FK
Page 14: ...Fig 20 Unit Control Box Arrangement Sizes 034 048 14...
Page 15: ...Fig 21 Unit Control Box Arrangement Sizes 054 078 15...
Page 16: ...Fig 22 Unit Control Box Arrangement Sizes 088 and 104 16...
Page 39: ...Fig 44 Modulating Power Exhaust Component Locations Sizes 034 048 39...
Page 40: ...Fig 45 Modulating Power Exhaust Component Locations Sizes 054 104 40...
Page 56: ...Fig 55 Typical Wiring Schematic 48FK JK and 50FK FY JK JY Units 054 074 Shown 56...
Page 57: ...Fig 55 Typical Wiring Schematic 48FK JK and 50FK FY JK JY Units 054 074 Shown cont 57...