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48/50PD05 manual Typical Unit Component Arrangement, C08657
Models:
48/50PD05
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Troubleshooting
Install
Error codes
48PD Control Wiring Schematic
Evaporator Fan Service and Replacement
Maintenance
Display Configuration
Internal Wiring
Cooling Supply Air Set Point Reset
Diagnostic Alarm Codes and Possible Causes
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48/50PD
C08657
Fig. 15 - Typical Unit Component Arrangement
46
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Contents
Troubleshooting Instructions
TABLE OF CONTENTS
Controls, Start-Up,Operation, Service and
Single Package Displacement Ventilation
UNIT DAMAGE HAZARD
SAFETY CONSIDERATIONS
ELECTRICAL SHOCK HAZARD
FIRE, EXPLOSION HAZARD
BASIC CONTROL USAGE
Accessory Navigator Display
GENERAL
ComfortLink Control
System Pilott and Touch Pilot Devices
CCN Tables and Display
Conventions Used in This Manual
Refrigerant Service Ports
START-UP
Unit Preparation
Evaporator Fan
Power Supply
Internal Wiring
Condenser Fans and Motors
CONTROLS QUICK SET-UP
Accessory Installation
Control Set Point and Configuration Log
Orifice Change 48PD Only
IAQ Switch
Accessories
Power Exhaust
CCN Communication
Fan Status
Filter Status
Independent Outputs
SERVICE TEST
Programming Operating Schedules
Fan Test
THIRD PARTY CONTROL
Alarm Output
Display Configuration
CONTROLS OPERATION
Service Password PSWD
Unit Configuration
Password Enable PROT
Remote HVAC Mode Disabled HV.DN
Occupancy Determination
Space Humidity Switch RH.SW
General Operating Sequence
RH Sensor On OAQ Input RH.S
Indoor Fan Operation
Compressor Operation
Setpoints→UHSP
Unoccupied Free Cooling
Outdoor Fan Operation
Economizer Operation
Table 6 — Fan Level Control of Outdoor Fan
IAQ Analog Input
Indoor Air Quality IAQ
Power Exhaust
IA.CF = 0 No IAQ
Cooling Modes
Fig. 6 - Cooling Speed Demand Window
Cooling Supply Air Set Point Reset
Fig. 7 - Cool Supply Air Set Point
Fig. 8 - Economizer Minimum Position
For all units with Economizers
For units with Enthalpy Control
Ventilation Mode
Heating Modes
Supply-AirTemperature Sensor SAT
Gas Heat Start-Up
Temp Comp Strt Cool Factr TCS.C
Temperature Compensated Start
Setting Up the System
Temp Comp Strt Heat Factr TCS.H
SPT Override Enabled? SCH.O→OV.SP
Carrier Comfort Network CCNR Configuration
Temperature Compensated Start Logic
Demand Limit
Restart Procedure
TROUBLESHOOTING
Alarm Handling
CCN Alarm Broadcast
Diagnostic Alarm Codes and Possible Causes
Alarms and Alerts
Viewing and Clearing Unit Alarms
Communication Failures
Alert Code T076 - Return Air Thermistor Failure
Alert Code A157 - A/D Hardware Failure
Alert Code T415 - IAQ Input Out of Range
Alert Code T416 - OAQ Input Out of Range
Table 8 — ComfortLink Alarm Codes
48/50PD
Cooling Troubleshooting
Table 8 — ComfortLink Alarm Codes cont
Digital Scroll Controller DSC Troubleshooting
Flash Code 4 ⎯ Locked Rotor
Table 10 — DSC Red LED Flash Codes
Economizer Troubleshooting
Table 11 — Economizer Service Analysis
Phase Loss Protection
Heating Troubleshooting
Variable Frequency Drive VFD Troubleshooting
Phase Reversal Protection
LEGEND IDM -- Induced-DraftMotor
Fig. 9 - IGC Service Analysis Logic
48/50PD
IGC --Integrated Gas Unit Controller
DESCRIPTION
RESET METHOD
48/50PD
PROBABLE CAUSE
Refrigerant Temperatures
Thermistor Troubleshooting
Air Temperatures
Thermistor/Temperature Sensor Check
Forcing Inputs and Outputs
Transducer Troubleshooting
Sensor Trim
TEMP
48/50PD
TEMP
Degree F
86K at 25_C Resistors
Degree C
Degree C
48/50PD
MAJOR SYSTEM COMPONENTS
General
sections below
48/50PD
Fig. 12 - 48PD Control Wiring Schematic
C08582
48/50PD
Fig. 13 - 50PD Control Wiring Schematic
C08583
48/50PD
C08584
48/50PD
Fig. 15 - Typical Unit Component Arrangement
C08657
setting
Main Base Board MBB
CEPL130346-01
Fig. 16 - Main Base Board MBB
POINT DESCRIPTION
Table 19 - MBB Connections
48/50PD
SENSOR LOCATION
Economizer Control Board ECB
Fig. 17 - Economizer Control Board ECB
DISPLAY
Table 20 — ECB Connections
48/50PD
POINT DESCRIPTION
Fig. 18 - Modulation Board AUX1
Modulation Board AUX1
Table 21 — AUX1 Connections
Digital Scroll Control Board DSC
Variable Frequency Drive VFD
Fig. 20 - Variable Frequency Drive VFD
Integrated Gas Control IGC Board
Fig. 21 - Integrated Gas Control IGC Board
Low Voltage Terminal Strip
Space Temperature Sensor T-55
Accessory Navigatort Display
Field-InstalledAccessories
Space Temperature Sensor T-56
Space Temperature Sensor Averaging
Space Temperature Sensor T-58
Fig. 25 - CCN System Architecture
Fig. 26 - Space Temperature Sensor Averaging
Factory Wiring
Field Wiring
LEGEND
Return/Supply Air Temperature Sensor
SERVICE
Carrier Accessory Kits
Two-PositionDamper
Cleaning
Coil Maintenance and Cleaning Recommendation
Outdoor-AirInlet Screens
Condensate Drain Pan
Filters
Main Burner 48PD
Lubrication
Evaporator Fan Service and Replacement
Evaporator Fan Performance Adjustment
Compressors
Condenser-FanAdjustment
Evaporator Fan Belt Tension Adjustment
Variable Frequency Drive VFD Replacement
Fig. 31 - Evaporator-FanAlignment and Adjustment
Verify Sensor Performance
Economizer Operation During Power Failure
To Use the Cooling Charging Chart
Evacuation
Gas Valve Adjustment
PuronR Refrigerant
Main Burners
Cleaning and Adjustment
High Altitude
Filter Drier
Relief Devices
Replacement Parts
Diagnostic LEDs
Compressor Sound Shield
Table 27 - MODE - RUN STATUS
APPENDIX A - LOCAL DISPLAY AND CCN TABLES
48/50PD
Table 27 — MODE - RUN STATUS cont
APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT
48/50PD
APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT
Table 28 — MODE - SERVICE TEST
Table 29 — MODE - TEMPERATURES
Table 30 — MODE - PRESSURES
Table 32 — MODE - INPUTS
APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT
Table 31 — MODE - SET POINTS
48/50PD
Table 33 — MODE - OUTPUTS
APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT
48/50PD
APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT
Table 34 — MODE - CONFIGURATION
48/50PD
APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT
Table 34 — MODE - CONFIGURATION cont
48/50PD
48/50PD
APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT
ITEM
48/50PD
APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT
ITEM
Table 36 - CCN ONLY TABLES
APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT
Table 35 — MODE - TIME CLOCK
48/50PD
Table 37 — MODE - OPERATING MODES
APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT
48/50PD
Table 37 — MODE - OPERATING MODES cont
APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT
48/50PD
Table 37 — MODE - OPERATING MODES cont
Table 38 — MODE - ALARMS
APPENDIX A - LOCAL DISPLAY AND CCN TABLES CONT
48/50PD
APPENDIX B - VFD INFORMATION
0-10Vdc
Table 40 — VFD CONFIGURATIONS
APPENDIX B - VFD INFORMATION CONT
48/50PD
Start Up with Assistant
VFD Operation
VFD Modes
Start Up by Changing Parameters Individually
Start-UpAssistant Mode
Drive Parameter Backup Mode
Parameters Mode
Changed Parameters Mode
Faults Red LED Lit
VFD Diagnostics
I/O Settings Mode
Alarms Green LED Flashing
History
VFD Maintenance
Correcting Alarms
Heat Sink
APPENDIX B - VFD INFORMATION CONT
Table 41 — FAULT CODES
48/50PD
APPENDIX B - VFD INFORMATION CONT
Table 41 — FAULT CODES cont
48/50PD
APPENDIX B - VFD INFORMATION CONT
Table 42 — ALARM CODES
Table 43 — MAINTENANCE INTERVALS
48/50PD
Battery Replacement
Main Fan Replacement
Control Panel Cleaning
3 3 2
APPENDIX C - START-UPDATA
AIRFLOW
AIRFLOW
Page
LEGEND
Bhp -- Brake Horsepower
Bhp -- Brake Horsepower
1. Maximum continuous BHP is
AIRFLOW
AIRFLOW
AIRFLOW
AIRFLOW
48/50PD
48/50PD
Bhp -- Brake Horsepower
Bhp -- Brake Horsepower
LEGEND
GENERAL NOTES FOR FAN PERFORMANCE DATA TABLES
APPENDIX D - ADDITIONAL START-UPDATA
INDICATE UNIT SETTINGS BELOW
CONTROL SET POINT AND CONFIGURATION LOG
Table 65 — MODE - CONFIGURATION
Table 65 — MODE - CONFIGURATION cont
48/50PD
Table 65 — MODE - CONFIGURATION cont
48/50PD
Table 65 — MODE - CONFIGURATION cont
48/50PD
I. PRE-START-UP
UNIT START-UPCHECKLIST
TEMPERATURES
II.START-UP
Printed in U.S.A
48/50PD
Catalog No:48-50PD-01T
Edition Date: 3/09