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Carrier 50GC 06 - User Manual

Carrier 50GC 06
144 pages
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1
Controls, Start-- Up, Operation
and Troubleshooting
48/50FC 04---07, 48/50GC 04---06
Single P ackage Rooft op Units
with SystemV u™ Controls Version 1.X
and Puronr (R---410A) Refr ig er ant
C150173
IMPORTANT: This literature covers 48/50FC 04--07 and 48/50GC 04--06 models with SystemVu controls version 1.X (factory--installed
option).
TABLE OF CONTENTS
Page
SAFETY CONSIDERATIONS 2.........................
GENERAL 3.........................................
Conventions Used in This Manual 3......................
BASIC CONTROL USAGE 3...........................
SystemVu Control (factory --installed option) 3..............
SystemVu Interface 3.................................
Accessory Navigatort Display 4........................
System Pilott andTouchPilott Devices 5................
CCN Tables and Display 5.............................
START -- UP 6.........................................
Unit Preparation 6....................................
Refrigerant Service Ports 6.............................
Crankcase Heater 6...................................
Compressor Rotation 6................................
Power Supply 6.....................................
Internal Wiring 6.....................................
Evaporator Fan 6....................................
Condenser Fans and Motors 6...........................
Return--Air Filters 8..................................
Outdoor--Air Inlet Screens 8............................
Accessory Installation 8...............................
Gas Heat (48FC and 48GC) 8...........................
CONTROLS QUICK SET-- UP 8.........................
Control Set Point and Confirmation Log 8.................
Initial Startup 8......................................
Thermostat Control 9.................................
Space T emperature Sensor Control -- Direct Wired
(T--55 or T--56 or T--59) 9.............................
Space Humidistat Control 9............................
Space Relative Humidity Sensor Control 9.................
CCN Communication 9...............................
CCN Linkage Control 9...............................

Table of Contents

Questions and Answers

  • P
    Paul ManningSep 23, 2025
    What does Alert A110 mean on my Carrier 50GC 06 Air Conditioner?
    • A
      Amy McleanSep 23, 2025
      Alert A110 on your Carrier Air Conditioner indicates that the SPT sensor is out of range. This is usually due to a faulty thermistor or an incorrect thermistor caused by improper ohm reading. When this alert is active, cooling and heating will not operate.
  • O
    Oscar LewisAug 23, 2025
    What does Fault F010 mean on my Carrier 50GC 06 Air Conditioner?
    • J
      jennifer93Aug 23, 2025
      Fault F010 on your Carrier Air Conditioner indicates a low voltage issue, possibly due to a brownout, low supply voltage, or a missing phase in the supply power. The control system will shut down the unit, but it should automatically clear once the supply voltage rises above 19 volts AC.
  • A
    Ashley GeorgeAug 25, 2025
    What does Fault F011 mean on my Carrier 50GC 06?
    • S
      sarah48Aug 26, 2025
      Fault F011 indicates that the MBB reference voltage is out of range, usually due to an MBB failure or the supply voltage being out of range. The control system will shut down the unit. This fault should automatically clear when the DC reference voltage returns to its normal range.
  • C
    Christine BakerAug 27, 2025
    What does Alert A012 mean on my Carrier Air Conditioner?
    • S
      shawnswansonAug 27, 2025
      Alert A012 on your Carrier Air Conditioner signals an MBB zero crossing issue, often caused by an MBB failure or the supply voltage frequency being too high or too low. The alert should automatically clear once the supply voltage returns to the normal range.
  • E
    emeadowsAug 27, 2025
    What does Fault F013 mean on my Carrier 50GC 06 Air Conditioner?
    • R
      Rachel FisherAug 27, 2025
      Fault F013 on your Carrier Air Conditioner indicates that MBB Fuse 2 is open, typically due to a wiring error in a switch input or the switch pulling too much current. The control will shut down the unit, but the fault should automatically clear when the fuse temperature returns to normal.
  • M
    Mario ScottSep 18, 2025
    What does Alert A107 mean on my Carrier Air Conditioner?
    • T
      Traci WatsonSep 18, 2025
      Alert A107 on your Carrier Air Conditioner indicates that the RAT sensor is out of range. This is usually due to a faulty thermistor, a shorted or open thermistor caused by a wiring error, or a loose connection. When this alert is active, no differential dry bulb crossover control can occur.
  • S
    sullivanbrianSep 15, 2025
    What does Alert A105 mean on my Carrier 50GC 06 Air Conditioner?
    • B
      Barbara HatfieldSep 15, 2025
      Alert A105 on your Carrier Air Conditioner indicates an open OAT sensor, generally caused by a faulty thermistor or an open thermistor due to a wiring error, or a loose connection. When this alert appears, the economizer will not operate for cooling.
  • B
    Brent FlemingSep 16, 2025
    What does Alert A106 mean on my Carrier 50GC 06 Air Conditioner?
    • D
      Daniel StoutSep 16, 2025
      Alert A106 on your Carrier Air Conditioner indicates a shorted OAT sensor, which is typically caused by a faulty thermistor or a shorted thermistor due to a wiring error, or a loose connection. If this alert is active, the economizer will not operate to provide cooling.
  • D
    deanna10Sep 6, 2025
    What does Fault F020 mean on my Carrier 50GC 06 Air Conditioner?
    • R
      Randall VelasquezSep 6, 2025
      Fault F020 on your Carrier Air Conditioner indicates a software error, meaning the software on the MBB is not responding. Recovery is automatic if the software can reset the board. If not, try cycling the power to the control before considering board replacement.
  • R
    Robert HolmesSep 3, 2025
    What does Fault F018 mean on my Carrier 50GC 06 Air Conditioner?
    • R
      russell70Sep 3, 2025
      Fault F018 on your Carrier Air Conditioner indicates an MBB EEPROM failure, meaning the serial EEPROM chip on the MBB, which stores the unit’s configuration, is not responding. Recovery is automatic, but you might need to replace the MBB board. Before replacing the board, try cycling the power to the control.

Summary

Controls, Start-Up, Operation and Troubleshooting

Safety Considerations

Essential safety guidelines, warnings, and cautions for installation and servicing.

Basic Control Usage and SystemVu Interface

Overview of SystemVu control system, interface, and Navigator display operation.

Start-Up Procedures

Step-by-step guide for unit preparation, electrical checks, and fan/motor verification.

Pre-Operation Checks and Controls Setup

Filter checks, accessory installation, gas heat inspection, and quick controls setup.

Configuration Settings

Detailed settings for quick setup, network, thermostat, sensors, CCN, and accessories.

Unit Configuration Options

Configuring inputs, dampers, schedules, and service test procedures.

Test Procedures

Executing cooling, heating, and automatic test procedures for system verification.

Control System Operation

Third-party controls, input/output configurations, and general unit operation.

Demand Determination and Setpoints

Methods for determining demand and configuring setpoints based on sensors and occupancy.

Indoor Fan and Cooling Operation

Details on indoor fan operation, fan speed settings, and cooling modes.

Specialized Operating Modes

Humidi-MiZer system, reheat, dehumidification, and heating control strategies.

Economizer and IAQ Control

Economizer operation, minimum ventilation, and indoor air quality control.

Free Cooling and Network Communication

Free cooling functions, network protocols (CCN/BACnet), and IAQ purge.

Troubleshooting

Diagnosing unit stoppages, faults, alerts, and common alarm codes.

Control Module Communication

Status LEDs, communication failures, and resistance checks for control modules.

System-Specific Troubleshooting

Detailed troubleshooting for cooling, Humidi-MiZer, economizer, and heating systems.

System Protection and Sensor Checks

Phase protection, thermistor, and transducer troubleshooting procedures.

Major System Components

Overview of main system components including the Main Base Board and IGC Board.

Carrier Comfort Network (CCN) Interface

Connecting to the CCN network, wiring requirements, and communication bus details.

SystemVu Controller Display References (Appendices)

Reference guides for SystemVu controller display menus: Run Status, Alerts/Faults, Service, Inputs, Outputs.

Control Set Point and Configuration Log

Log for recording unit settings, space setpoints, temperature demand, and clock configurations.

Unit Start-Up Checklist

Checklist for pre-start-up verification, electrical checks, and temperature/pressure readings.

Carrier 50GC 06 Specifications

General IconGeneral
BrandCarrier
Model50GC 06
CategoryAir Conditioner
LanguageEnglish

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