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48/50FC 04---07, 48/50GC 04---06
Single Package Rooftop Units
with SystemVu™ Controls Version 1.X
and Puronr (R---410A) Refrigerant
IMPORTANT: This literature covers 48/50FC 04- -07 and 48/50GC 04- -06 models with SystemVu controls version 1.X (factory- -installed
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Controls, Start-- Up, Operation
and Troubleshooting
TABLE OF CONTENTS
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Table of Contents
Troubleshooting
Related Manuals for Carrier 50GC Series
Summarization of Contents
Controls, Start–Up, Operation and Troubleshooting
SAFETY CONSIDERATIONS
General safety precautions and warnings for installation and servicing.
ELECTRICAL SHOCK HAZARD
Warning about the dangers of electrical shock during service.
GENERAL
Overview of the manual's scope and unit types covered.
Conventions Used in This Manual
Explains text formatting and navigation conventions used in the manual.
SystemVu Interface Operation
Details on using the SystemVu interface keypad for navigation and control.
Accessory Navigator Display
Explains the operation and navigation of the Navigator accessory display.
START-UP
Unit Preparation
Checks required before unit startup, including installation and code compliance.
Crankcase Heater
Information on the crankcase heater operation and pre-operation requirements.
Compressor Rotation
Procedure to verify and correct compressor rotation direction for correct operation.
Gas Heat (48FC and 48GC)
Inspection and verification steps for the gas heat section before operation.
CONTROLS QUICK SET-UP
Initial Startup
Steps required to complete the initial startup process for the SystemVu controller.
Quick Setup
Lists common configurations set during startup and how to complete the process.
Thermostat Control
Wiring and configuration for connecting and using a thermostat.
SERVICE TEST
Independent Outputs
Details on changing output status for various unit components.
Fan Test
Procedures for setting up or testing indoor fan speeds.
Cooling Test
Used to change output status for compressors and Humidi-MiZer system operation.
Heating Test
Used to change output status for individual heat stages (gas or electric).
Automatic Test
Executes applicable tests for the system components, cooling, heating, and system.
CONTROLS OPERATION
Display Configuration
Settings for configuring the local display, including metric and language options.
Unit Configuration
Configurations for factory options, installed accessories, and operation variables.
General Operation
Overview of unit modes, sub-modes, and control types.
Demand Determination
How the control determines overall unit demand based on various factors.
Thermostat Demand
How thermostat inputs determine system demand based on type.
Space Sensor Demand
Demand determination based on space sensor inputs and setpoints.
Indoor Fan Operation
Cooling Operation
Explanation of the unit's cooling operation, including demand and mode determination.
Cooling Staging Control
Methods for determining and requesting cooling stages based on demand.
Compressor Control
How the compressor control provides stages based on staging requests.
Humidi--MiZerR Operation
Information on units with the Humidi-MiZer system option for improved dehumidification.
TROUBLESHOOTING
Complete Unit Stoppage
Several conditions that can cause a complete unit stoppage.
Restart Procedure
Steps to take before attempting to restart the machine after a shutdown.
Faults and Alerts
Information on viewing and clearing unit alarms and faults.
Control Module Communication
Communication Failures
Troubleshooting steps for communication failures between boards.
Heating Troubleshooting
Gas Heat (48FC and 48GC Units)
General gas heating service analysis and IGC board logic.
Electric Heat (50FC and 50GC Units)
Service analysis for electric heating units.
MAJOR SYSTEM COMPONENTS
General
Overview of main control components and factory-installed options.
Main Base Board (MBB)
General
Description of the MBB, its I/O connections, and control execution.
Protective Devices
Space Mounted Sensors
Information on T-55 and T-56 space temperature sensors and averaging.
APPENDIX A: SystemVut Controller Display
Run Status Main Menu Layout
Describes the layout and points available in the Run Status menu.
Settings Main Menu Layout
Details on navigating and configuring settings via the main menu.
Alerts/Faults Main Menu Layout
Navigation for viewing and resetting system alerts and faults.
Service Main Menu Layout
Accessing unit tests, configurations, and information for service.
Inputs Main Menu Layout
Displays and configurations for all analog and digital inputs.
Outputs Main Menu Layout
Lists and describes all available unit outputs and their states.
APPENDIX B: SystemVu™ Controller Display
Run Status Main Menu Layout
Maps SystemVu display names to modes, sub-modes, and system demands.
APPENDIX C: Navigatort Display
MODE -- RUN STATUS
Details the Navigator display items for run status, mode, and sub-mode.
MODE -- SERVICE TEST
Lists available service tests and their corresponding points.
MODE -- TEMPERATURES
Displays temperature readings from various sensors.
MODE -- PRESSURES
Displays pressure readings from refrigerant circuits.
MODE -- SETPOINTS
Lists and allows adjustment of occupied and unoccupied setpoints.
MODE -- INPUTS
Shows the status of all configured inputs, including thermostat and sensors.
MODE -- OUTPUTS
Shows the status of all configured outputs, such as relays and fan speeds.
MODE -- CONFIGURATIONS
Lists and allows configuration of unit settings and parameters.
MODE -- TIME CLOCK
Configuration settings for time, date, DST, and occupancy schedules.
MODE -- ALARMS
Displays active alarms, history, and options to reset alarms.
APPENDIX D: SystemVut Controller CCN Tables
Status Display Tables
Lists points and their status values for CCN communication.
Maintenance Tables
Lists CCN parameters for maintenance and configuration.
Service Config Tables
Detailed configuration parameters for unit services and options.
Configuration Tables
Configuration settings for BAS protocol, CCN, and BACnet networks.
Setpoint Table
Table of setpoint values for various operating modes.
APPENDIX E: BACnet Points List
Analog Value (AV) Points
List of all Analog Value (AV) points with BACnet details.
Binary Value (BV) Points
List of all Binary Value (BV) points with BACnet details.
Multi--State Value (MSV) Points
List of all Multi-State Value (MSV) points with BACnet details.
String Value (SV) Points
List of all String Value (SV) points with BACnet details.
CONTROL SET POINT AND CONFIGURATION LOG
Settings -- Main Menu Layout
Table for recording unit settings and configuration parameters.
UNIT START-UP CHECKLIST
I. PRE-START-UP
Checklist of pre-start-up verification steps for the unit.
II. START-UP ELECTRICAL
Electrical checks for supply voltage, compressor, and fan amps.
III. HUMIDI--MIZER SYSTEM START-UP
Specific start-up steps for units equipped with the Humidi-MiZer system.
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