Thermistor T3 and T4 Locations, Size 054-104 Units | Carrier 48FK

054 UNITS

064, 074, 078 UNITS

088, 104 UNITS

Fig. 14 Ð Thermistor T3 and T4 Locations, Size 054-104 Units

11

Image 11

Carrier 48FK, JK034-074, 50FK specifications Thermistor T3 and T4 Locations, Size 054-104 Units

Contents

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