Carrier
50FK, JK034-074, 48FK
specifications
Modulating Power Exhaust Component Locations Sizes
Troubleshooting
Voltage Drop Characteristics
Install
Parameter Group Default Value
Remote Sasp Wiring
Diagnostic Codes
Motor Overload Settings
Safety
Service Training
Status Switch Inputs
Page 40
40
Fig. 45 Ð Modulating Power Exhaust Component Locations; Sizes
054-104
Page 39
Page 41
Image 40
Page 39
Page 41
Contents
Controls Operation Troubleshooting
Contents
Safety Considerations
General
Pin Terminal Connector J1 Thermistor Inputs
Connector J1 Temperature Unit Size Terminal no Input
DIP
EXV
Status Switch Inputs
Connector J2 Status Switch Unit Size Terminal no
034-104
RNT Ð Return
Page
Output Pin and Terminal Assignments
Output PIN Name Rating Device Terminal
HIR
IFC
Compressor Operation
Thermistor T1 Location, 50FK,JK034-048 Units
Thermistor T1 Location, 50FK,JK054-074 Units
Thermistor T2 Location, Size 034-048 Units
Thermistor T3 and T4 Locations, Size 054-104 Units
Integrated Circuit
Input
Controls Installation
Space Temperature Reset
Unit Control Box Arrangement, Sizes
Unit Control Box Arrangement, Sizes
Unit Control Box Arrangement, Sizes 088
Voltage Drop Characteristics
Thermistor Resistance
Space Temperature Sensor Averaging
Single-Step Demand Limit
MSP = Sasp +
Remote Sasp Wiring
Smoke Control Switches Required for Each Mode
Smoke Control Modes
Switch Functions
Tubing Size
Switch
DPS Ð Differential Pressure Switch
Terminal Block
Modulating Power Exhaust Differential Pressure Switch Sizes
START-UP
Potentiometer Inputs and Ranges
Conguration Header DIP Switch Factory Settings
Conguration Header Jumpers
DIP Switches
Switch Function Meaning Position
Inlet Guide Vane Motor 50FK,JK034-074 Units
Jumper Removal to Disable Motor
Variable Frequency Drive Keypad
VFD Set Point Frequency Command for Duct Pressure
Changing the VFD Set Point Frequency Command
Control Signal Pressure VFD SET Point
Pressure
Start Unit
Quick Test, Unit Conguration and Switch Check
Quick Normal Description Control Switch Test Display Step no
Quick Test, Thermistor and Potentiometer Check
Quick Test, Output Relay Check
Quick Normal Description Thermistor or Test
Quick Normal Test Description Relay Number
Operating Information
Sensor Resistance Values
Page
Component Arrangement, 034-048 Units
Component Arrangement, 054-104 Units
Page
Modulating Power Exhaust Component Locations Sizes
Modulating Power Exhaust Component Locations Sizes
Page
Compressor Loading and Unloading Sequences
Cooling Size 054 Units
Cooling Size 064 Units
Cooling Size 088 Units
Cooling Size 104 Units
Troubleshooting
Controls Troubleshooting
Symptoms Probable Causes Solutions
Operation Status Codes
Diagnostic Codes
Codes 71 to 76 THERMISTOR/RESISTOR Failure
Page
Terminals Voltage AC
Test PIN Voltage DC TP3
TP4
TP6
Quick Test J9 PIN Numbers Step no
PIN Terminal Voltage DC
Pin Terminal Connector J1 Voltages
Pin Terminal Connector J2 Voltages
Terminal Strip J6 Connection Resistance Reading
PIN Voltage Terminal
Enthalpy Sensor Checkout
Terminal Strip J5 Connector Resistance Reading
Quick Test J5 PIN Numbers Step no
Variable Frequency Drive
Carrier Default Program Parameter Values
Parameter Group Default Value
Required User Adjusted Defaults
Motor Overload Settings
ALM
LAT
LPS
MTR
Page
Page
Service Training
Call for Free Catalog
II. Preliminary Checklist Items
PRE-START-UP
III. START-UP
IV. Notes
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