Carrier 48/50PD05 Service Test, Programming Operating Schedules, Independent Outputs, Fan Test

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48/50PD

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. Then the user would configure the Period 1 Occupied From point to 08:00 and the Period 1 Occupied To point to 17:00. To create a different weekend schedule, the user would use Period 2 and set days Saturday and Sunday to ON with the desired Occupied On and Off times.

IMPORTANT: By default, the time schedule periods are programmed for 24 hours of occupied operation.

To create a schedule, perform the following procedure:

1.Scroll to the Configuration mode, and select CCN CONFIGURATION (CCN). Scroll down to the Schedule Number (Configuration→CCN→SCH.O=SCH.N). If password protection has been enabled, the user will be prompted to enter the password before any new data is accepted. SCH.N has a range of 0 to 99. The default value is 1. A value of 0 is always occupied, and the unit will control to its occupied set points. A value of 1 means the unit will follow a local schedule, and a value of 65 to 99 means it will follow a CCN schedule. Schedules 2-64 are not used as the control only supports one internal/local schedule. If one of the 2-64 schedules is configured, then the control will force the number back to 1. Make sure the value is set to 1 to use a local schedule.

2.Enter the Time Clock mode. Scroll down to the LOCAL TIME SCHEDULE (SCH.L) sub-mode, and press ENTER. Period 1 (PER.1) will be displayed.

3.Scroll down to the MON.1 point. This point indicates if schedule 1 applies to Monday. Use the ENTER command to go into Edit mode, and use the Up or Down key to change the display to YES or NO. Scroll down through the rest of the days and apply schedule 1 where desired. The schedule can also be applied to a holiday.

4.Configure the beginning of the occupied time period for Period 1 (OCC). Press ENTER to go into Edit mode, and the first two digits of the 00.00 will start flashing. Use the Up or Down key to display the correct value for hours, in 24-hour (military) time. Press ENTER and hour value is saved and the minutes digits will start flashing. Use the same procedure to display and save the desired minutes value.

5.Configure the unoccupied time for period 1 (UNC). Press ENTER to go into Edit mode, and the first two digits of the 00.00 will start flashing. Use the Up or Down key to display the correct value for hours, in 24-hour (military) time. Press ENTER and hour value is saved and the minutes digits will start flashing. Use the same procedure to display and save the desired minutes value.

6.The first schedule is now complete. If a second schedule is needed, such as for weekends or holidays, scroll down and repeat the entire procedure for period 2 (PER.2). If additional schedules are needed, repeat the process for as many as are needed. Eight schedules are provided. See Table 4 for an example of setting the schedule.

SERVICE TEST

The Service Test function can be used to verify proper operation of compressors, heating stages, indoor fan, outdoor fans, power exhaust fans, economizer, crankcase heaters, and the alarm relay. Use of Service Test is recommended at initial system start up and during troubleshooting (See Table 5 for point details).

Service Test mode has the following changes from normal operation:

SOutdoor air temperature limits for cooling circuits, economizer,

and heating are ignored. Normal compressor time guards and other staging delays are reduced to 30 seconds or less.

SCircuit alerts are limited to 1 strike (versus 3) before changing to alarm shut down state.

SThe status of ALM.N is ignored so all alerts and alarms are broadcast on CCN.

SThe words “SERVICE TEST” are inserted into every alarm message.

Service test can only be turned ON/OFF at the unit display. Once turned ON, other entries may be made with the display or through CCN. To turn Service Test on, change the value of TEST to ON. To turn service test off, change the value of TEST to OFF.

IMPORTANT: Service Test mode may be password protected. Refer to Basic Control Usage section for more information. Depending on the unit model, factory-installed options, and field-installed accessories, some of the Service Test functions may not apply.

Independent Outputs

The independent (INDP) submenu is used to change output status for the economizer, power exhaust stages, crankcase heaters, and the alarm relay. These independent outputs can operate simultaneously with other Service Test modes. All outputs return to normal operation when Service Test is turned off. When the economizer is using the factory default Digital Control Type (Configuration→ECON→E.CTL is 1 or 2) then the Economizer Calibration feature may be used to automatically check and reset the economizer actuator range of motion. Refer to the economizer operation section of more details.

IMPORTANT: If a network force is applied to CCN points: ECONOCMD, PE_1, PE_2, or ALMOUT, their respective test mode functions will not be usable. Those forces are at a higher level than test mode; therefore they will still be honored when in test mode.

Fan Test

The fans (FANS) submenu is used to change output status for the indoor fan and outdoor fan stages. The VFD power can be turned on and off via IDF (Supply VFD Power Test). The indoor fan speed test (F.SPD) runs the fan at the desired speed entered. The outdoor fan relay test (OFC.1) only tests the relay for switching between high and low speeds. The actual outdoor fan will not run unless cool test is on. The cooling (COOL) and heating (HEAT) service test outputs are reset to OFF for the fans service test.

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Contents Table of Contents Safety Considerations What to do if you smell gasGeneral Basic Control UsageSystem Pilott and Touch Pilot Devices Scrolling Marquee Mode and Menu Display StructureCCN Tables and Display START-UP Evaporator Fan Power SupplyInternal Wiring Condenser Fans and MotorsControls Quick SET-UP Accessories CCN CommunicationFilter Status Setting an Occupied Time Schedule Weekdays Only for 730 toFan Status TimeclockIndependent Outputs Service TestProgramming Operating Schedules Fan TestThird Party Control Controls OperationUnit Configuration ModesGeneral Operating Sequence Occupancy DeterminationCompressor Operation Indoor Fan OperationEconomizer Operation Outdoor Fan OperationUnoccupied Free Cooling Indoor Air Quality IAQ Cooling Modes Cool Supply Air Set Point For units with Enthalpy Control Ventilation ModeFor all units with Economizers Demand Control VentilationHeating Modes Supply-Air Temperature Sensor SAT Gas Heat Start-UpTemp Comp Strt Cool Factr TCS.C Temperature Compensated StartSetting Up the System Temp Comp Strt Heat Factr TCS.HCarrier Comfort Network Ccnr Configuration Demand LimitRestart Procedure TroubleshootingAlarm Handling Complete Unit StoppageAlarms and Alerts Communication FailuresAlert Code T075 Supply Air Temperature Thermistor Failure Alert Code T073 Outdoor Air Temperature Thermistor FailureAlert Code T074 Space Temperature Thermistor Failure Alarm Code A154 Serial Eeprom Hardware FailureAlarm Code A200 Linkage Timeout Comm Failure Alarm Code T155 Serial Eeprom Storage Failure ErrorAlarm Code A156 Critical Serial Eeprom Storage Fail Error Alarm Code A404 Fire ShutdownAlert Code T415 IAQ Input Out of Range Alert Code T416 OAQ Input Out of RangeComfortLink Alarm Codes Cooling Troubleshooting Digital Scroll Controller DSC Troubleshooting Cooling Service AnalysisFlash Code 4 ⎯ Locked Rotor DSC Red LED Flash CodesEconomizer Troubleshooting Economizer Service AnalysisVariable Frequency Drive VFD Troubleshooting Heating TroubleshootingPhase Loss Protection IGC Service Analysis Logic LED IGC Board LED Alarm CodesElectric Heat Service Analysis FlashRefrigerant Temperatures Thermistor TroubleshootingAir Temperatures Thermistor/Temperature Sensor CheckForcing Inputs and Outputs Transducer TroubleshootingSensor Trim Temp Voltage Resistance Drop Temp Voltage Resistance Temp F Drop Degree C Degree F Pressure Voltage Major System ComponentsGeneral Psig48PD Control Wiring Schematic 50PD Control Wiring Schematic 48/50PD Power Wiring Schematic and Legend Typical Unit Component Arrangement Setting Main Base Board MBBMBB Connections FIL.SCenter of the board. Do not change this setting Economizer Control Board ECBECB Connections RM.OCModulation Board AUX1 CommunicationDigital Scroll Control Board DSC CMP.AVariable Frequency Drive VFD Variable Frequency Drive VFDIntegrated Gas Control IGC Board Integrated Gas Control IGC BoardLow Voltage Terminal Strip TB1Scrolling Marquee Display Accessory Navigatort DisplayField-Installed Accessories Carrier Comfort Network Ccnr InterfaceSpace Temperature Sensor T-58 Space Temperature Sensor AveragingSpace Temperature Sensor Averaging Service Periodic Clean Water Rinse CleaningCoil Maintenance and Cleaning Recommendation Routine Cleaning of Round-Tube Coil SurfacesOutdoor-Air Inlet Screens Condensate Drain PanFilters Main Burner 48PDEvaporator Fan Performance Adjustment Evaporator Fan Service and ReplacementLubrication Variable Frequency Drive VFD Replacement Evaporator Fan Belt Tension AdjustmentCondenser-Fan Adjustment Evacuation Economizer Operation During Power FailureVerify Sensor Performance Refrigerant ChargeAltitude Compensation 48PG03-07 Gas Valve AdjustmentPuronR Refrigerant Elevation Natural GAS PropaneFilter Drier High AltitudeMain Burners Protective DevicesRelief Devices Replacement PartsDiagnostic LEDs Compressor Sound ShieldMode RUN Status Appendix a Local Display and CCN TablesOnly StrtAlrmdisp = CCN Generic = CCNMode Temperatures Mode Service TestMode Pressures Mode SET Points Mode InputsMode Outputs OutputsMode Configuration MRT.H HT.TYHTR MOT.HII.CF IA.CFIA.FN II.FNSPT.T TrimSPT.C SAT.CMode Time Clock CCN only TablesMode Operating Modes EN.LO OK.HTACT.H AQ.DVExpansion Range Units Mode AlarmsExpansion Range Default CCN CCN Point CCN Write TABLE/SUB---TABLE StatusAppendix B VFD Information VFD Terminal DesignationsVFD Configurations VFD Modes Standard Display ModeVFD Operation Start Up with AssistantChanged Parameters Mode Parameters ModeStart-Up Assistant Mode Drive Parameter Backup ModeVFD Diagnostics History VFD MaintenanceCorrecting Alarms Heat Sink101---105 Fault Codes201---206 1002 10001001 1003Maintenance Intervals Alarm CodesMaintenance Interval Control Panel Cleaning Main Fan ReplacementBattery Replacement Fan Performance 48PDE05 Vertical Units Appendix C START-UP DataFan Performance 48PDD05 Vertical Units AirflowFan Performance 48PDD06 Vertical Units Available External Static Pressure in. wg Fan Performance 48PDE06 Vertical UnitsRpm Bhp 1500 CFMFan Performance 48PDE05 Horizontal Units Fan Performance 48PDD05 Horizontal UnitsBhp Rpm Fan Performance 48PDD06 Horizontal Units 1026 1086 1144 1199 1253Fan Performance 48PDE06 Horizontal Units Fan Performance 50PD05 Vertical Units Fan Performance 50PD06 Vertical UnitsFan Performance 50PD05 Horizontal Units Bhp Rpm 1500General Notes for FAN Performance Data Tables Appendix D Additional START-UP Data Control SET Point and Configuration LOG Indicate Unit Settings belowCCN Point Entry 103 104 Unit START-UP Checklist PRE-START-UP106

48/50PD05 specifications

The Carrier 48/50PD05 is a remarkable addition to Carrier's lineup of rooftop units, offering advanced cooling and heating solutions for commercial applications. Designed for medium-sized buildings, this unit is well-suited for both new installations and as a replacement for older systems, thanks to its versatile features and efficient performance.

One of the standout features of the 48/50PD05 is its energy efficiency. It incorporates state-of-the-art technology to achieve high Seasonal Energy Efficiency Ratios (SEER) and EER ratings, reducing operational costs while delivering superior comfort. The unit is also compliant with the latest energy regulations, making it an environmentally friendly choice for building owners concerned about sustainability.

The 48/50PD05 is equipped with a highly efficient scroll compressor, which not only enhances performance but also contributes to quiet operation. This is a significant advantage in commercial spaces where noise levels need to be kept in check for comfort and productivity. Additionally, the unit includes advanced airflow design, ensuring even distribution of conditioned air throughout the space.

Technologically, the Carrier 48/50PD05 features Carrier's Infinity Control system, which allows for precise control of indoor climate. This intelligent control mechanism can be integrated with smart building management systems, enabling users to monitor and manage energy use effectively. Wi-Fi connectivity is also available, providing remote access for real-time adjustments and diagnostics.

Durability is another characteristic of the 48/50PD05. Constructed with high-quality materials, the unit withstands various environmental conditions, ensuring longevity and reliability. Moreover, the modular design facilitates easy maintenance, making service procedures efficient and cost-effective.

In addition to cooling, the Carrier 48/50PD05 offers heating capabilities, often utilizing gas or electric heating options that can be tailored to the specific needs of a building. The unit can also be equipped with integrated economizers, allowing for free cooling during suitable outdoor conditions, further enhancing energy savings.

Overall, the Carrier 48/50PD05 stands out as a high-performance HVAC solution that combines efficiency, technology, and durability. It provides building owners with a versatile tool to ensure comfort while minimizing their environmental footprint. With a strong emphasis on energy savings and advanced control features, this rooftop unit is a smart investment for any commercial property.
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