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48/50PD05,06
Single Package Displacement Ventilation
or Single Zone Variable Airflow Rooftop Units
Electric Cooling/Gas Heating with PURONR (R- -410A)
Refrigerant and COMFORTLinkt 1.x Controls
Controls, Start- -Up, Operation, Service and
TABLE OF CONTENTS
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Troubleshooting Instructions
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Table of Contents
Troubleshooting
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Summary of Contents for Carrier 48/50PD05
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Page 1: Table Of Contents
Compressor Operation Indoor Fan Operation Outdoor Fan Operation Economizer Operation Indoor Air Quality (IAQ) Cooling Modes Heating Modes Temperature Compensated Start Carrier Comfort Network (CCN)R Configuration Demand Limit Alarm Handling TROUBLESHOOTING Complete Unit Stoppage Restart Procedure Control Module Communication Communication Failures... -
Page 2: Safety Considerations
Accessory Navigatort Display ..... . . Carrier Comfort Network (CCN)R Interface Field- -Installed Accessories ...... -
Page 3: General
The ComfortLink control is a comprehensive unit-management system. The control system is easy to access, configure, diagnose and troubleshoot. The ComfortLink control is fully communicating and cable-ready for connection to the Carrier Comfort Network® (CCN) building management system. control communications for remote monitoring via the Internet. Multiple units can be linked together (and to other ComfortLink control equipped units) using a 3-wire communication bus. -
Page 4: System Pilott Device
down arrow keys to scroll through the top-level categories. These are listed in Appendix A and will be indicated on the Scrolling Marquee by the LED next to each mode listed on the face of the display. When a specific mode or sub-mode is located, push the ENTER key to enter the mode. -
Page 5: Conventions Used In This Manual
NAVIGATE/ EXIT SCROLL Fig. 3 - - System Pilott User Interface Force Hierarchy There is a hierarchy in CCN with regards to forcing a point. Programs and devices write a force at different priority levels. A higher level (smaller number, 1 being the highest) will override a lower level force. -
Page 6: Power Supply
CONTROL BOX COMPRESSOR ELECTRICAL OPTIONS PANEL OUTDOOR AIR SCREEN (HIDDEN) BASEPAN CONNECTIONS ACCESS PANEL On 3-phase units, it is important to be certain the compressors are rotating in the proper direction. To determine whether or not compressors are rotating in the proper direction, use a phase-rotation meter on the unit input power to check for L1-L2-L3 or clockwise rotation or use the Service Test mode to energize a compressor. -
Page 7: Accessory Installation
2000 to 7000 ft. For elevations above 7000 ft, refer to High Altitude section to identify the correct orifice size for the elevation. Purchase these orifices from your local Carrier dealer. Follow instructions in accessory Installation Instructions to install the correct orifices. -
Page 8: Ccn Communication
ITEM EXPANSION SASP Cool Supply Air Setpoint FS.MX Supply Fan Maximum Speed FS.MN Supply Fan Maximum Speed FS.VM Vent Mode Fan Speed MIN.C Min Compressor Capacity FS.CD Fan Speed Control Demand SA.MU SASP Maximum Reset Up SA.MD SASP Maximum Reset Down MP .MX Econ Min at Max Fanspeed PE1.C... - Page 9 If a Fan Status accessory was field installed, the unit must be configured for it by setting Configuration→UNIT→FN.SW to normally open (1) or normally closed (2). Normally open (1) is the preferred configuration. IMPORTANT: Fan Status input is not on the terminals marked Fan Status.
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Page 10: Programming Operating Schedules
Programming Operating Schedules The ComfortLinkt controls will accommodate up to eight different schedules (Periods 1 through 8), and each schedule is assigned to the desired days of the week. Each schedule includes an occupied on and off time. As an example, to set an occupied schedule for 8 AM to 5 PM for Monday through Friday, the user would set days Monday through Friday to ON for Period 1. -
Page 11: Cooling Test
The cooling (COOL) submenu is used to change output status for testing the cooling function. The fans (FANS) and heating (HEAT) service test outputs are reset to OFF for the cooling service test. The digital scroll controller power test (CTLR) turns on and off the compressor controller. -
Page 12: Modes
Password Enable (PROT) This variable enables or disables the use of a password. The password is used to restrict use of the control to change configurations. Service Password (PSWD) This variable is the 4-digit numeric password that is required if enabled. -
Page 13: General Operating Sequence
This configuration identifies if a space relative humidity sensor is installed on the outdoor air quality (OAQ) input. A YES value enables SP.RH display. A NO value disables SP.RH display and use. Space Humidity Switch (RH.SW) This configuration identifies if a space relative humidity switch is installed on the ENTHALPY input, and what status (normally open, normally closed) the input is when the space humidity is LOW. -
Page 14: Compressor Operation
(Configuration→CCN→SCH.O→OV.SP) is set to YES. The length of the override period is determined by the Timed Override Hours (Configuration→CCN→SCH.O→OV>EX). Compressor Operation The 48/50 PD units use a Copeland Digital Scroll Compressor that can vary the refrigerant capacity between 100 and 15%. This is accomplished by a mechanism in the compressor that separates the two scroll spirals which stops the pumping of the refrigerant gas. -
Page 15: Outdoor Fan Operation
The 48/50 PD units use a multi- -speed outdoor fan motor to control the head pressure within an acceptable range at low outdoor ambient temperatures. On the 48 and 50 PD- -05 and 06 size units the outdoor fan contactor is powered on the load side of the compressor contactor so the outdoor fans will run only when the compressor contactor is energized. -
Page 16: Indoor Air Quality (Iaq)
a. (Configuration→ECON→UEFC = 0) - - Disabled When UEFC = 0, unoccupied free cooling is disabled. Cooling will only occur if the space exceeds the unoccupied setpoints. b. (Configuration→ECON→UEFC = 1) - - Unoccupied When UEFC is set to 1, unoccupied free cooling can occur throughout the entire unoccupied period. -
Page 17: Cooling Modes
(Configuration→ECON→MP.MX) or IAQ Override Position (Configuration→AIR.Q→OVR.P) cooling. IA.CF = 3 (Control Minimum Position) When IA.CF = 3, an external 4 to 20 mA source is used to set the minimum position. The 4mA signal corresponds to 0% and the 20 mA signal corresponds to 100%. - Page 18 variable or Unoccupied Cool Set Point (Setpoints→UCSP) plus Speed Control (Configuration→COOL→FS.CD) configuration variable the indoor fan will run at 100%. When the temperature in the conditioned space is between the Occupied Cool Set Point (Setpoints→OCSP) Occupied (Setpoints→OCSP) plus the Fan Speed Control Demand (Configuration→COOL→FS.CD) configuration variable the indoor fan modulates to satisfy the Occupied Cool Set Point (Setpoints→OCSP)
- Page 19 1. 1.The outdoor temperature is below the Econo Cool Hi Temp Limit (Configuration→ECON→EH.LO) and above Econo Cool (Configuration→ECON→EL.LO). For units with Enthalpy Control 2. 1.The outdoor enthalpy is low and the outdoor temperature below Econo Cool (Configuration→ECON→EH.LO) and above the Econo Cool Lo Temp Limit (Configuration→ECON→EL.LO).
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Page 20: Heating Modes
Quality (IAQ) section of the Economizer Operation section above for more details on Demand Control Ventilation (DCV). Economizer Operation for Units Equipped with Return Air Sensor Only When the CO sensor detects a CO (Inputs→AIR.Q→IAQ) below (Configuration→AIR.Q→AQD.L) value the MP.25, MP.50, MP.75 and MP.MX points will be recalculated to new values for MP.25, MP.50, MP.75 based on the Econ Min IAQ Position (Configuration→AIR.Q→AQ.MN). - Page 21 Once modified by the IGC, the fan off delay will not change back configured Fan- -off (Configuration→HEAT→FOD.G) unless power is reset to the control. A light emitting diode (LED) is provided on the IGC to indicate status. During normal operation the LED is continuously on. See the Troubleshooting section if the LED is off or flashing.
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Page 22: Temperature Compensated Start
will not be interrupted to the burners and heating will continue. Once modified, the fan on delay will not change back to 45 seconds unless power is reset to the control. When the indoor fan turns on after the 40 or 45 second delay the indoor fan will run at 100% fan speed. -
Page 23: Carrier Comfort Network (Ccn)R Configuration
Carrier Comfort Network (CCN)R Configuration It is possible to configure the ComfortLink™ control to participate as an element of the Carrier Comfort Network (CCN) system directly from the local display. This section will deal with explaining the various programmable options which are found under the CCN sub-menu in the Configuration mode. -
Page 24: Alarm Handling
Loadshed Group Number (S.GRP) This corresponds to the loadshed supervisory devices that reside elsewhere on the CCN network and broadcast loadshed and redline commands to its associated equipment parts. This variable will default to zero which is an invalid group number. This allows the loadshed function to be disabled until configured. -
Page 25: Green Led
(TB). Yellow LED The MBB has one yellow LED which is used to indicate CCN communication activity. The Carrier Comfort Network® (CCN) LED will blink during times of network communication. Communication Failures If the Scrolling Marquee or Navigator display Communication Failure or the green or yellow LED’s do not flash on the boards... - Page 26 only the outdoor temperature to control the outdoor fans. If both the SCT and OAT fail, then circuit shutdown alarm will occur also. The cause of the alert is usually a faulty thermistor, a shorted or open thermistor caused by a wiring error, or a loose connection. Alert Code T066 - - Circuit A Saturated Suction Temperature Thermistor Failure This alert occurs when the unit’s suction transducers are turned off...
- Page 27 necessary. Cycling the power to the control should be tried before board replacement. Alarm Code T155 - - Serial EEPROM Storage Failure Error Configuration data in the serial EEPROM chip can not be verified. The unit will run to last know good values or defaults, and therefore operating errors may occur.
- Page 28 Initiate economizer calibration (Service Test→INDP→ E.CAL) using the Service Test menu. The economizer calibration procedure will try to find new maximum open and closed positions. If the alert does not clear automatically after the calibration procedure is complete, investigate what is limiting economizer rotation.
- Page 29 ALARM DESCRIPTION ALERT NUMBER Digital Compressor Control Board Alarm Compressor A1 Safety Trip Service Test --- Compressor A1 Safety Trip T051 Compressor A1 Current Detected After Turnoff Service Test --- Compressor A1 Current Detected After Turnoff Circuit A Saturated Condensing Temp T064 Thermistor Failure Circuit A Saturated Suction Temperature...
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Page 30: Cooling Troubleshooting
ALARM DESCRIPTION ALERT NUMBER Loss of Communication with the Capacity T178 Control Board Loss of communication with the Economizer T179 Control Board Loss of communication with the Economizer T180 Actuator A200 Linkage Timeout Error --- Comm Failure A404 Fire Shutdown T408 Dirty Filter Fan Status Switch ON, Fan Contactor OFF... -
Page 31: Digital Scroll Controller (Dsc) Troubleshooting
PROBLEM Compressor and Fan Will Not Start Power failure. Fuse blown or circuit breaker tripped. Check CB1 and CB2. Disconnect off. Compressor time guard to prevent short cycling. Occupancy schedule set point or supply set point not calling for Cooling. Outdoor temperature too low. - Page 32 measured a temperature above 268 F (131 C) or the thermistor has short circuited (jumpered out). The DSC will de- -energize the compressor contactor and unloader solenoid, and the alarm relay contacts will close causing a T051 alert on the ComfortLink Control. The compressor will be allowed to restart after 30 minute delay and after the DTT reads below 250 F (120 C).
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Page 33: Economizer Troubleshooting
Unit fan speed is offsetting the economizer minimum position to maintain proper ventilation. LEGEND Carrier Comfort Network Indoor Air Quality Variable Frequency Drive ECON. This will drive the economizer damper to the specified position. Continue to adjust the ECON value to make sure the economizer opens and closes. -
Page 34: Heating Troubleshooting
Heating Troubleshooting Use the unit Scrolling Marquee display or a CCN device to view the heating status display and the heating diagnostic display (see Appendix A) for information on the heating operation. Check the current alarms and alarm history for any heating alarm codes and correct any causes. - Page 35 LEGEND IDM -- Induced-Draft Motor IGC -- Integrated Gas Unit Controller NOTE: Thermostat Fan Switch in the “AUTO” position. C07014 Fig. 9 - - IGC Service Analysis Logic...
- Page 36 FLASH DESCRIPTION CODE Normal Operation Hardware Failure No gas heating. 1 Flash Indoor Fan On/Off Delay 5 seconds subtracted from Modified On delay. 5 seconds added to Off delay (3 min max). 2 Flashes Limit Switch Fault Gas valve and igniter Off. Indoor fan and inducer On.
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Page 37: Thermistor Troubleshooting
The electronic control uses thermistors to sense temperatures used to control operation of the unit. Resistances at various temperatures are listed in Table 15- -17. Thermistor pin connection points are shown in the Major System Components section. The general locations of the thermistors are shown the Major System Components section. -
Page 38: Sensor Trim
Sensor Trim Corrective offsets can be applied to the space temperature and the supply air temperature sensor readings. These corrections are set in the Configuration→TRIM menu for the display, or in the Maintenance→TRIM table for CCN. See the Indoor Air Quality section for available adjustments to IAQ and OAQ sensor readings. - Page 39 RAT, OAT, SAT, and SPT Thermistors (10K at 25_C Resistors) TEMP VOLTAGE RESISTANCE DROP (V) (Ohms) --- 25 4.758 196,453 --- 24 4.750 189,692 --- 23 4.741 183,300 --- 22 4.733 177,000 --- 21 4.724 171,079 --- 20 4.715 165,238 --- 19 4.705 159,717...
- Page 40 Table 16 — Temperature (_F) vs. Resistance/Voltage Drop Values for SCT Sensors (5K at 25_C Resistors) TEMP VOLTAGE RESISTANCE DROP (V) (Ohms) --- 25 3.699 98,010 --- 24 3.689 94,707 --- 23 3.679 91,522 --- 22 3.668 88,449 --- 21 3.658 85,486 --- 20...
- Page 41 Degree C Degree F Resistance (k Ohms) --- 40 --- 40 --- 35 --- 31 --- 30 --- 22 --- 25 --- 13 --- 20 --- 4 --- 15 --- 10 --- 5 (86K at 25_C Resistors) Degree C 2889.60 2087.22 1522.20 1121.44...
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Page 42: Major System Components
Table 18 — Pressure (psig) vs. Voltage Drop Values for Suction Pressure Transducers PRESSURE VOLTAGE PRESSURE (psig) DROP (V) (psig) 0.465 0.485 0.505 0.524 0.544 0.564 0.583 0.603 0.623 0.642 0.662 0.682 0.702 0.721 0.741 0.761 0.780 0.800 0.820 0.839 0.859 0.879 0.898... - Page 43 C08582 Fig. 12 - - 48PD Control Wiring Schematic...
- Page 44 C08583 Fig. 13 - - 50PD Control Wiring Schematic...
- Page 45 C08584 Fig. 14 - - 48/50PD Power Wiring Schematic and Legend...
- Page 46 C08657 Fig. 15 - - Typical Unit Component Arrangement...
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Page 47: Main Base Board (Mbb)
‘1.’ Do not change this setting. GREEN LED - LEN (LOCAL EQUIPMENT NETWORK) Fig. 16 - - Main Base Board (MBB) YELLOW LED - CCN (CARRIER COMFORT NETWORK) INSTANCE JUMPER (SET TO 1) C07026... - Page 48 Alarm relay HT.1 Heat Stage 2 relay HT.2 Heat Stage 1 relay Local Equipment Network (LEN) Carrier Comfort Network (CCN) Network device power Scrolling Marquee Display (LEN) Scrolling Marquee Display power Modulation Board (AUX1) LEN Optional ECB power Table 19 — MBB Connections...
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Page 49: Economizer Control Board (Ecb)
The ECB controls the economizer actuator. (See Fig. 17 and Table 20.) The control signal from the ECB uses either the MFT (Multi-Function Technology) digital communication protocol or a 4 to 20 mA output signal as defined by the configuration Configuration→ECON→E.CTL. - Page 50 Output power to economizer actuator PE.1 Power exhaust 1 relay PE.2 Power exhaust 2 relay EC.CP Commanded Economizer position Local Equipment Network (LEN) Carrier Comfort Network (CCN) EC.CP & Economizer actuator position EC.AP (digital control) Table 20 — ECB Connections SENSOR LOCATION...
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Page 51: Modulation Board (Aux1)
The AUX1 board controls the compressor capacity and the indoor fan speed (See Fig. 18 and Table 21.) It outputs a 1- -5vdc and a 2- -10vdc signal to the DSC and VFD for capacity and fan speed, respectively. This board is also used as the LEN connection buss DISPLAY POINT DESCRIPTION NAME... -
Page 52: Digital Scroll Control Board (Dsc)
Digital Scroll Control Board (DSC) The DSC board controls the compressor’s capacity. (See Fig. 19 and Table 22.) It receives a 1- -5vdc signal from the AUX1 board determined by the cooling algorithm. DISPLAY POINT DESCRIPTION NAME CTLR Digital Scroll Ctrl Pwr Compressor Discharge Temperature (DTT) CAPC Compressor Capacity... -
Page 53: Variable Frequency Drive (Vfd)
The VFD varies the frequency of the AC voltage supplied to the indoor fan. (See Fig. 20 and Table 23.) This causes the variance in the speed of the fan. The commanded fan speed is received by the VFD from the AUX1 board as a 2- -10vdc signal. The AI1 DIP switch must be in the off (or towards “U”) position to properly read the analog signal. -
Page 54: Integrated Gas Control (Igc) Board
Integrated Gas Control (IGC) Board The IGC is provided on gas heat units. (See Fig. 21 and Table 24.) The IGC controls the direct spark ignition system and monitors the rollout switch, limit switch, and induced-draft motor Hall Effect switch. RED LED-STATUS TERMINAL POINT DESCRIPTION... -
Page 55: Low Voltage Terminal Strip (Tb1)
Local Equipment Network (LEN) Carrier Comfort Network (CCN) * Refer to Third Party Control section for more information control transformers, interface connection for the Carrier Comfort Network® (CCN) communication, and interface connection for the Local Equipment Network (LEN) communications are also located on the low voltage terminal strip. -
Page 56: Scrolling Marquee Display
4. The RJ14 CCN connector on TB1 can also be used, but is only intended for temporary connection (for example, a laptop computer running Carrier network software). 5. Restore power to unit. IMPORTANT: A shorted CCN bus cable will prevent some routines from running and may prevent the unit from starting. - Page 57 AIR DISTRIBUTION-DIGITAL AIR VOLUME CONTROL (DAV) Fig. 25 - - CCN System Architecture ROOFTOP UNIT ROOFTOP UNIT LEGEND CCN -- Carrier Comfort Networkr CL -- ComfortLinkt Controls DAV -- Digital Air Volume HVAC -- Heating, Ventilation, and Air Conditoning TCU -- Terminal Control Unit ADDITIONAL...
- Page 58 TB1-T55 TO MAIN BASE BOARD SENSOR 1 SPACE TEMPERATURE AVERAGING --4 T-55 SENSOR APPLICATION TB1-T55 TO MAIN BASE BOARD LEGEND -- Terminal Block ______ -- Factory Wiring _ _ _ _ -- Field Wiring SPACE TEMPERATURE AVERAGING --9 T-55 SENSOR APPLICATION Fig.
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Page 59: Indoor Air Quality
When installing the supply duct SAT, the unit must be configured by setting Configuration→UNIT→SAT.H to ENBL. A SAT sensor in the supply duct is the preferred configuration for systems with Carrier variable volume and temperature (VVT®) accessory controls. Space Humidistat The Space Humidistat (part no. -
Page 60: Cleaning
Monthly cleaning with Totaline® environmentally sound coil cleaner is essential to extend the life of coils. This cleaner is available from Carrier Replacement parts division as part number P902- -0301 for a one gallon container, and part number P902- -0305 for a 5 gallon container. It is recommended that all... - Page 61 CAUTION UNIT RELIABILITY HAZARD Failure to follow this caution may result in reduced unit performance. High velocity water from a pressure washer, garden hose, or compressed air should never be used to clean a coil. The force of the water or air jet will bend the fin edges and increase airside pressure drop.
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Page 62: Lubrication
To inspect blower wheel, open heat section door. Using a flashlight, look into the flue exhaust duct to inspect. If cleaning is required, remove motor and wheel assembly by removing the screws holding the flue box cover to the flue box. Remove the screws holding the inducer housing to the inlet plate. -
Page 63: Evaporator Fan Belt Tension Adjustment
a. Loosen fan pulley setscrews. b. Slide fan pulley along fan shaft. c. Make angular alignment by loosening motor from mounting plate. 8. Tighten belts. 9. Restore power to unit. Fig. 31 - - Evaporator- -Fan Alignment and Adjustment Evaporator Fan Belt Tension Adjustment To adjust belt tension: 1. -
Page 64: Verify Sensor Performance
Refrigerant Charge Amount of refrigerant charge is listed on unit nameplate. Refer to Carrier GTAC II; Module 5; Charging, Recovery, Recycling, and Reclamation section for charging methods and procedures. Unit panels must be in place when unit is operating during charging procedure. -
Page 65: Gas Valve Adjustment (48Pd Units Only)
Char arge if if Belo low the Cu Co mp re ss ssor Disc isc h a rg e P re ss ssu re , [p sig Fig. 35 - - Charging Chart ⎯ 48/50PD05 R410A RE REFRI RIGERANT RANT OUTDOOR F... -
Page 66: High Altitude (48Pd Units Only)
High Altitude For high altitude applications greater than 2,000 ft the heat input rate should be reduced. The higher the altitude is above sea level, the less oxygen is in the air. See Table 8 for orifice sizing. A high altitude kit is available to convert unit for altitudes up to 7,000 ft. -
Page 67: Relief Devices
Replacement Parts A complete list of replacement parts may be obtained from any Carrier distributor upon request. Diagnostic LEDs The MBB, ECB, AUX1, IGC and DSC control boards have LED lights for diagnostic purposes. The meanings and error codes can be found in the the troubleshooting section of this manual. -
Page 68: Appendix A - Local Display And Ccn Tables
APPENDIX A - LOCAL DISPLAY AND CCN TABLES ITEM EXPANSION RUN STATUS VIEW Auto View of Run Status HVAC HVAC Mode Status Currently Occupied Supply Air Temperature ALRM Current Alarms & Alerts TIME Time of Day VERS Software Version Numbers CESR131459--- xx--- xx CESR131249--- xx--- xx CESR131333--- xx--- xx... - Page 69 ITEM EXPANSION STRT Component Starts Compressor A1 Starts Crankcase Heater Starts Indoor Fan Starts OFC.1 Outdoor Fan 1 Starts HT.1 Heat Stage 1 Starts HT.2 Heat Stage 2 Starts PE.1 Power Exhaust 1 Starts PE.2 Power Exhaust 2 Starts ALRM Alarm Relay Starts (ALRMDISP) = CCN only)
- Page 70 APPENDIX A - LOCAL DISPLAY AND CCN TABLES (CONT) ITEM EXPANSION SERVICE TEST TEST Field Service Test Mode INDP Test Independent Outputs ECON Economizer Position Test E.CAL Calibrate Economizer PE.1 Power Exhaust 1 Test PE.2 Power Exhaust 2 Test ALRM Alarm Relay Test Crankcase Heat Test FANS...
- Page 71 ITEM EXPANSION SETPOINTS OCSP Occupied Cool Setpoint UCSP Unoccupied Cool Setpoint OHSP Occupied Heat Setpoint UHSP Unoccupied Heat Setpoint Heat--- Cool Setpoint Gap STO.R SPT Offset Range (+/--- ) SASP Cool Supply Air Setpoint RH.SP Space RH Setpoint RH.DB Space RH Deadband C.LO Compressor Lockout Temp HT.LO...
- Page 72 APPENDIX A - LOCAL DISPLAY AND CCN TABLES (CONT) ITEM EXPANSION OUTPUTS FANS Fan Outputs Indoor Fan VFD Pwr Relay F.SPD Commanded Fan Speed OFC.1 Outdoor Fan 1 Relay COOL Cool Outputs CTLR Digital Scroll Ctrl Pwr CAPC Compressor Capacity Crankcase Heat Relay HEAT Heat Outputs...
- Page 73 ITEM EXPANSION CONFIGURATION DISP Display Configuration METR Metric Display LANG Language Selection PROT Password Enable PSWD Service Password TEST Test Display LEDs UNIT Unit Configuration S.DLY Startup Delay OC.FN Fan On When Occupied IDF.F Shut Down on IDF Failure FS.MX Supply Fan Maximum Speed FS.MN...
- Page 74 APPENDIX A - LOCAL DISPLAY AND CCN TABLES (CONT) Table 34 — MODE - CONFIGURATION (cont) ITEM EXPANSION HEAT Heating Configuration HT.TY Type of Heat Installed N.HTR Number of Heat Stages MRT.H Heat Minimum On Time MOT.H Heat Minimum Off Time H.DEC Heat Stage Decrease Time...
- Page 75 Table 34 — MODE - CONFIGURATION (cont) ITEM EXPANSION AIR.Q Air Quality Config. IA.CF IAQ Analog Input Config IA.FN IAQ Analog Fan Config II.CF IAQ Switch Input Config II.FN IAQ Switch Fan Config AQ.MN Econo Min IAQ Position OVR.P IAQ Override Position OA.CF OAQ Analog Input Config OAQ.L...
- Page 76 APPENDIX A - LOCAL DISPLAY AND CCN TABLES (CONT) Table 34 — MODE - CONFIGURATION (cont) ITEM EXPANSION (GENERIC = CCN only) POINT 01 Definition POINT 02 Definition POINT 03 Definition POINT 04 Definition POINT 05 Definition POINT 06 Definition POINT 07 Definition POINT 08 Definition POINT 09 Definition...
- Page 77 ITEM EXPANSION TIME CLOCK TIME Time of Day TIME Hour and Minute DATE Current Date MNTH Month of Year Day of Month YEAR Year Day of Week Daylight Savings Config. STR.M Start Month STR.W Start Week STR.D Start Day M.ADD Minutes to Add STP .M Stop Month...
- Page 78 APPENDIX A - LOCAL DISPLAY AND CCN TABLES (CONT) ITEM EXPANSION OPERATING MODES MODE Control Modes Unit operation disabled Unit operation enabled Service test enabled HVAC HVAC Operation Disabled Ventilation (fan--- only) Cooling Unoccupied Free Cooling Heating HV.DN Remote HVAC Mode Disable EFF.C Cool Setpoint in Effect...
- Page 79 ITEM EXPANSION HEAT Heat Mode Diagnostic HEAT In Heating Mode? OK.HT OK to Select Heat Mode? MS.TG Mode Select Timeguard H.LOC Heat OAT Lockout HT.LO Heating Lockout Temp Indoor Fan State F.SPD Commanded Fan Speed AVL.H Available Heating Stages REQ.H Requested Heating Stages LMT.H Max Heat Stage In Effect...
- Page 80 APPENDIX A - LOCAL DISPLAY AND CCN TABLES (CONT) Table 37 — MODE - OPERATING MODES (cont) ITEM EXPANSION (OCCDEFM = CCN only) Occupancy Supervisory Current Mode (1=Occup) Current Occup Period # Time--- Override in Effect Time--- Override Duration Current Occupied Time Current Unoccupied Time Next Occupied Day Next Occupied Time...
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Page 81: Appendix B - Vfd Information
On 48/50PD units, the supply fan speed is controlled by a 3- -phase VFD. The VFD is located in the supply fan section behind an indoor fan scroll. The VFD speed is controlled directly by the ComfortLinkt controls through a 0- -10Vdc signal based on a space temperature sensor. - Page 82 PD Product specific setting ABB Drive default ABB Drive default PD Product specific setting ABB Drive default ABB Drive default Carrier default settings from PPS ABB Drive default ABB Drive default ABB Drive default ABB Drive default Carrier default settings from PPS...
- Page 83 A rotating blinking arrow indicates that the drive is C08675 running but not at set point. A stationary arrow indicates that the drive is stopped. For Carrier rooftop units, the correct rotation is counterclockwise. The upper right corner shows the frequency set point that the drive will maintain.
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Page 84: Changed Parameters Mode
To view the default parameter value, press the UP and DOWN keys simultaneously. To restore the default factory settings, select the Carrier application macro. Start- - Up Assistant Mode To use the Start- -Up Assistant, perform the following procedure: 1. -
Page 85: Vfd Diagnostics
To download application parameters only to the control panel from the VFD, perform the following procedure: 1. Install the control panel with the correct parameters onto the VFD. 2. Select MENU (SOFT KEY 2). The Main menu will be displayed. 3. -
Page 86: Correcting Alarms
If installed in an appropriate environment, the VFD requires very little maintenance. Table 43 lists the routine maintenance intervals recommended by Carrier. Heat Sink The heat sink fins accumulate dust from the cooling air. Since a dusty sink is less efficient at cooling the drive, overtemperature faults become more likely. - Page 87 3015 UNDERLOAD CURVE. THERM FAIL Internal fault. The thermistor measuring the internal temperature of the drive is open or shorted. Contact Carrier. Internal fault. A communication ---related problem has been detected between the OMIO and OINT boards. Contact OPEX LINK Carrier.
- Page 88 APPENDIX B - VFD INFORMATION (CONT) FAULT FAULT NAME IN PANEL CODE 1000 Parameter values are inconsistent. Check for any of the following: 2001 MINIMUM SPEED > 2002 MAXIMUM SPEED 2007 MINIMUM FREQ > 2008 MAXIMUM FREQ 2001 MINIMUM SPEED / 9908 MOTOR NOM SPEED is outside of the range: ---128/+128 PAR HZRPM 2002 MAXIMUM SPEED / 9908 MOTOR NOM SPEED is outside of the range: ---128/+128 2007 MINIMUM FREQ / 9907 MOTOR NOM FREQ is outside of the range: --- 128/+128...
- Page 89 ALARM ALARM NAME CODE IN PANEL 2001 Reserved 2002 Reserved 2003 Reserved The change in direction being attempted is not allowed. Do not attempt to change the direction of motor rotation, or 2004 DIR LOCK Change parameter 1003 DIRECTION to allow direction change (if reverse operation is safe). Field bus communication has timed out.
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Page 90: Main Fan Replacement
If the drive is operated in a critical part of a process, fan replacement is recommended once these symptoms start appearing. Replacement fans are available from Carrier. To replace the main fan for frame sizes R1 through R2, perform the following (see Main Fan Replacement figure): 1. -
Page 91: Appendix C - - Additional Startup Data
Table 44 — Fan Performance - 48PDD05 Vertical Units AIRFLOW (Cfm) 1200 0.16 1300 0.19 1400 0.22 1500 0.26 1600 0.30 1700 0.35 1800 0.40 1900 0.46 2000 0.52 AIRFLOW (Cfm) 1200 0.59 1300 0.64 1400 0.70 1500 0.76 1600 0.82 1700 1007... - Page 92 Table 46 — Fan Performance - 48PDF05 Vertical Units AIRFLOW (Cfm) 1200 0.17 1300 0.20 1400 0.24 1500 0.28 1600 0.32 1700 0.37 1800 0.43 1900 0.50 2000 0.57 AIRFLOW (Cfm) 1200 0.61 1300 0.66 1400 0.72 1500 0.78 1600 1009 0.85 1700...
- Page 93 AIRFLOW (Cfm) 1500 0.29 1600 0.33 1700 0.39 1800 0.45 1900 0.51 2000 0.59 2100 0.67 2200 0.75 2300 0.85 2400 0.95 2500 1.06 AIRFLOW (Cfm) 1500 1004 0.79 1600 1017 0.86 1700 1032 0.94 1800 1048 1.02 1900 1066 1.11 2000 1084...
- Page 94 Table 50 — Fan Performance - 48PDD05 Horizontal Units AIRFLOW (Cfm) 1200 0.12 1300 0.14 1400 0.17 1500 0.20 1600 0.24 1700 0.28 1800 0.32 1900 0.37 2000 0.43 AIRFLOW (Cfm) 1200 0.54 1300 0.58 1400 0.63 1500 0.69 1600 0.74 1700 0.81...
- Page 95 AIRFLOW (Cfm) 1200 0.13 1300 0.16 1400 0.18 1500 0.22 1600 0.26 1700 0.30 1800 0.35 1900 0.41 2000 0.47 AIRFLOW (Cfm) 1200 0.56 1300 0.60 1400 0.65 1500 0.71 1600 0.77 1700 0.84 1800 0.91 1900 1008 0.99 2000 1026 1.08 LEGEND...
- Page 96 Table 54 — Fan Performance - 48PDE06 Horizontal Units AIRFLOW (Cfm) 1500 0.23 1600 0.27 1700 0.31 1800 0.37 1900 0.43 2000 0.49 2100 0.56 2200 0.65 2300 0.73 2400 0.83 2500 0.94 AIRFLOW (Cfm) 1500 0.72 1600 0.78 1700 0.85 1800 1001...
- Page 97 AIRFLOW (Cfm) 1200 0.15 1300 0.18 1400 0.21 1500 0.24 1600 0.28 1700 0.33 1800 0.38 1900 0.43 2000 0.49 AIRFLOW (Cfm) 1200 0.58 1300 0.63 1400 0.68 1500 0.74 1600 0.80 1700 0.87 1800 1005 0.94 1900 1019 1.02 2000 1034 1.10...
- Page 98 Table 58 — Fan Performance - 50PD05 Horizontal Units AIRFLOW (Cfm) 1200 0.11 1300 0.13 1400 0.16 1500 0.19 1600 0.22 1700 0.25 1800 0.29 1900 0.34 2000 0.39 AIRFLOW (Cfm) 1200 0.53 1300 0.57 1400 0.62 1500 0.67 1600 0.72 1700 0.78...
- Page 99 5. Use of a field-supplied motor may affect wire size. Recalculate the unit power supply MCA and MOCP if required. Contact your Carrier representative for details. 6. Use the following formula to calculate input watts: Input Watts = Bhp x (746/Motor Eff)
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Page 100: Appendix D - - Additional Startup Data
460 volt, 60 Hz power. If a motor does not fit into these specifications, the motor does not have to be replaced by an EPACT-compliant energy-efficient motor. Variable-speed motors are exempt from EPACT compliance requirements. Therefore, the indoor-fan motors for Carrier 48/50PG03- -14 units are exempt from these requirements. MOTOR PULLEY TURNS OPEN... -
Page 101: Indicate Unit Settings Below
Model Number: _____________________________ Serial Number: ______________________________ Date: ______________________________________ Technician: _________________________________ Control Type: Thermostat/T55 Space Temp./T- -56 Space Temp./T- -58 Space Temp. Set Points: Cooling Occupied: _______________ Heating ITEM EXPANSION CONFIGURATION DISP Display Configuration METR Metric Display LANG Language Selection PROT Password Enable PSWD Service Password... - Page 102 Table 65 — MODE - CONFIGURATION (cont) ITEM EXPANSION HEAT Heating Configuration HT.TY Type of Heat Installed N.HTR Number of Heat Stages MRT.H Heat Minimum On Time MOT.H Heat Minimum Off Time H.DEC Heat Stage Decrease Time H.INC Heat Stage Increase Time FOD.E Fan--- off Delay, Elect Heat FOD.G...
- Page 103 ITEM EXPANSION AIR.Q Air Quality Config. IA.CF IAQ Analog Input Config IA.FN IAQ Analog Fan Config II.CF IAQ Switch Input Config II.FN IAQ Switch Fan Config AQ.MN Econo Min IAQ Position OVR.P IAQ Override Position OA.CF OAQ Analog Input Config OAQ.L OAQ Lockout Limit AQD.L...
- Page 104 Table 65 — MODE - CONFIGURATION (cont) ITEM EXPANSION (GENERIC = CCN only) POINT 01 Definition POINT 02 Definition POINT 03 Definition POINT 04 Definition POINT 05 Definition POINT 06 Definition POINT 07 Definition POINT 08 Definition POINT 09 Definition POINT 10 Definition POINT 11 Definition POINT 12 Definition...
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Page 105: Pre-Start-Up
MODEL NO.: DATE: I. PRE-START-UP: VERIFY THAT ALL PACKAGING MATERIALS HAVE BEEN REMOVED FROM UNIT VERIFY INSTALLATION OF OUTDOOR AIR HOOD VERIFY INSTALLATION OF FLUE EXHAUST AND INLET HOOD (48PD ONLY) VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTALLATION INSTRUCTIONS VERIFY THAT ALL ELECTRICAL CONNECTIONS AND TERMINALS ARE TIGHT VERIFY GAS PRESSURE TO UNIT GAS VALVE IS WITHIN SPECIFIED RANGE (48PD ONLY) CHECK GAS PIPING FOR LEAKS (48PD ONLY) - Page 106 Catalog No:48- - 50PD- - 01T Copyright 2009 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231 Printed in U.S.A. Edition Date: 3/09 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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