Carrier 48/50PD05 manual ComfortLink Alarm Codes

Page 29

Table 8 — ComfortLinkAlarm Codes

 

 

 

 

 

ALARM

 

 

 

 

OR

DESCRIPTION

ACTION TAKEN BY

RESET

PROBABLE CAUSE

ALERT

CONTROL

METHOD

 

 

NUMBER

 

 

 

 

 

Digital Compressor Control Board Alarm

No action

Automatic

See the DSC’s LEDs for troubleshooting

 

Compressor A1 Safety Trip

Add Strike for Circuit A

Automatic

Current Sensing turned on (CS.A1 = Enable) and

 

should be off

 

 

 

 

 

Service Test --- Compressor A1 Safety Trip

Add Strike for Circuit A

Automatic

Current Sensing turned on (CS.A1 = Enable) and

T051

should be off

 

 

 

 

Compressor A1 Current Detected After

Turn off all

Automatic

Current Sensing turned on (CS.A1 = Enable) and

 

Turnoff

compressors

should be off

 

 

 

Service Test --- Compressor A1 Current

Turn off all

Automatic

Current Sensing turned on (CS.A1 = Enable) and

 

Detected After Turnoff

compressors

should be off

 

 

T064

Circuit A Saturated Condensing Temp

Use OAT to control

Automatic

Faulty, shorted, or open thermistor caused by wiring

Thermistor Failure

Outdoor fans

error or loose connection.

 

 

T066

Circuit A Saturated Suction Temperature

No Cooling

Automatic

Suction transducers internally forced inactive

Thermistor Failure

 

 

 

 

T073

Outdoor Air Temperature Thermistor Failure

No cooling with

Automatic

Faulty, shorted, or open thermistor caused by wiring

economizer

error or loose connection.

 

 

 

T074

Space Temperature Thermistor Failure

No heating or cooling

Automatic

Faulty, shorted, or open thermistor caused by wiring

error or loose connection.

 

 

 

 

T075

Supply Air Temperature Thermistor Failure

No cooling mode

Automatic

Faulty, shorted, or open thermistor caused by wiring

error or loose connection.

 

 

 

 

T076

Return Air Thermistor Failure

No differential DB

Automatic

Faulty, shorted, or open thermistor caused by wiring

crossover

error or loose connection.

 

 

 

T077

Space Relative Humidity Sensor Failure

If RH.S = Yes, then no

Automatic

Faulty, shorted, or open sensor caused by wiring

indoor humidity control

error or loose connection.

 

 

 

T092

Circuit A Suction Pressure Transducer

Shutdown Circuit A

Manual

Faulty transducer, faulty 5---V power supply, or loose

Failure

connection

 

 

 

T102

 

If CS.A1 = Enable,

 

Current Sensing turned on (CS.A1 = Enable) and

Compressor A1 Current Sensor Failure

then no T051 current

Automatic

should be off

 

 

alarm

 

 

 

 

 

T110

Circuit A Loss of Charge

Shutdown Circuit A

Manual

Low refrigerant or faulty suction pressure transducer

Service Test --- Circuit A Loss of Charge

Shutdown Circuit A

Manual

Low refrigerant or faulty suction pressure transducer

 

 

 

 

 

An overcharged system, high outdoor ambient

 

Circuit A High Discharge Pressure

Shutdown Circuit A

Automatic

temperature coupled with dirty outdoor coil, plugged

T126

 

 

 

filter drier, or a faulty high---pressure switch.

Service Test --- Circuit A High Discharge

 

 

An overcharged system, high outdoor ambient

 

 

 

 

Shutdown Circuit A

Automatic

temperature coupled with dirty outdoor coil, plugged

 

Pressure

 

 

 

filter drier, or a faulty high---pressure switch.

 

 

 

 

 

 

 

 

Low refrigerant charge, dirty filters, evaporator fan

 

 

 

 

turning backwards, loose or broken fan belt, plugged

 

Circuit A Low Refrigerant Pressure

Add Strike for Circuit A

Automatic

filter drier, faulty transducer, excessively cold return

 

 

 

 

air, or stuck open economizer when the ambient

T133

 

 

 

temperature is low.

 

 

 

Low refrigerant charge, dirty filters, evaporator fan

 

 

 

 

 

Service Test --- Circuit A Low Refrigerant

 

 

turning backwards, loose or broken fan belt, plugged

 

Add Strike for Circuit A

Automatic

filter drier, faulty transducer, excessively cold return

 

Pressure

 

 

 

air, or stuck open economizer when the ambient

 

 

 

 

 

 

 

 

temperature is low.

T143

Circuit A Failure To Pressurize

Add Strike for Circuit A

Automatic

Wiring causing reverse rotation or faulty compressor

Service Test --- Circuit A Failure To

Add Strike for Circuit A

Automatic

Wiring causing reverse rotation or faulty compressor

 

Pressurize

 

 

 

 

T153

Real Timeclock Hardware Failure

No time and date

Automatic

No time/date configured, software failure, or MBB

schedule operation

failure

 

 

 

A154

Serial EEPROM Hardware Failure

Unit Shutdown

Automatic

Software failure or MBB failure

T155

Serial EEPROM Storage Failure Error

Unit operation errors

Automatic

Software failure or MBB failure

A156

Critical Serial EEPROM Storage Fail Error

Unit Shutdown

Automatic

Software failure or MBB failure

A157

A/D Hardware Failure

Unit Shutdown

Automatic

Software failure or MBB failure

 

Circuit A Down Due to Failure

Shutdown Circuit A

Manual

Circuit has 3 strikes or has been locked out by

A163

another alarm

 

 

 

Service Test --- Circuit A Down Due to

Shutdown Circuit A

Manual

Circuit has 1 strike or has been locked out by another

 

 

Failure

alarm

 

 

 

* See Legend on next page

48/50PD

29

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Contents Table of Contents What to do if you smell gas Safety ConsiderationsBasic Control Usage GeneralCCN Tables and Display Scrolling Marquee Mode and Menu Display StructureSystem Pilott and Touch Pilot Devices START-UP Internal Wiring Power SupplyEvaporator Fan Condenser Fans and MotorsControls Quick SET-UP CCN Communication AccessoriesFan Status Setting an Occupied Time Schedule Weekdays Only for 730 toFilter Status TimeclockProgramming Operating Schedules Service TestIndependent Outputs Fan TestControls Operation Third Party ControlModes Unit ConfigurationOccupancy Determination General Operating SequenceIndoor Fan Operation Compressor OperationUnoccupied Free Cooling Outdoor Fan OperationEconomizer Operation Indoor Air Quality IAQ Cooling Modes Cool Supply Air Set Point For all units with Economizers Ventilation ModeFor units with Enthalpy Control Demand Control VentilationHeating Modes Gas Heat Start-Up Supply-Air Temperature Sensor SATSetting Up the System Temperature Compensated StartTemp Comp Strt Cool Factr TCS.C Temp Comp Strt Heat Factr TCS.HDemand Limit Carrier Comfort Network Ccnr ConfigurationAlarm Handling TroubleshootingRestart Procedure Complete Unit StoppageCommunication Failures Alarms and AlertsAlert Code T074 Space Temperature Thermistor Failure Alert Code T073 Outdoor Air Temperature Thermistor FailureAlert Code T075 Supply Air Temperature Thermistor Failure Alarm Code A154 Serial Eeprom Hardware FailureAlarm Code A156 Critical Serial Eeprom Storage Fail Error Alarm Code T155 Serial Eeprom Storage Failure ErrorAlarm Code A200 Linkage Timeout Comm Failure Alarm Code A404 Fire ShutdownAlert Code T416 OAQ Input Out of Range Alert Code T415 IAQ Input Out of RangeComfortLink Alarm Codes Cooling Troubleshooting Cooling Service Analysis Digital Scroll Controller DSC TroubleshootingDSC Red LED Flash Codes Flash Code 4 ⎯ Locked RotorEconomizer Service Analysis Economizer TroubleshootingPhase Loss Protection Heating TroubleshootingVariable Frequency Drive VFD Troubleshooting IGC Service Analysis Logic Electric Heat Service Analysis IGC Board LED Alarm CodesLED FlashAir Temperatures Thermistor TroubleshootingRefrigerant Temperatures Thermistor/Temperature Sensor CheckSensor Trim Transducer TroubleshootingForcing Inputs and Outputs Temp Voltage Resistance Drop Temp Voltage Resistance Temp F Drop Degree C Degree F General Major System ComponentsPressure Voltage Psig48PD Control Wiring Schematic 50PD Control Wiring Schematic 48/50PD Power Wiring Schematic and Legend Typical Unit Component Arrangement Main Base Board MBB SettingFIL.S MBB ConnectionsEconomizer Control Board ECB Center of the board. Do not change this settingRM.OC ECB ConnectionsCommunication Modulation Board AUX1CMP.A Digital Scroll Control Board DSCVariable Frequency Drive VFD Variable Frequency Drive VFDIntegrated Gas Control IGC Board Integrated Gas Control IGC BoardTB1 Low Voltage Terminal StripField-Installed Accessories Accessory Navigatort DisplayScrolling Marquee Display Carrier Comfort Network Ccnr InterfaceSpace Temperature Sensor Averaging Space Temperature Sensor T-58Space Temperature Sensor Averaging Service Coil Maintenance and Cleaning Recommendation CleaningPeriodic Clean Water Rinse Routine Cleaning of Round-Tube Coil SurfacesFilters Condensate Drain PanOutdoor-Air Inlet Screens Main Burner 48PDLubrication Evaporator Fan Service and ReplacementEvaporator Fan Performance Adjustment Condenser-Fan Adjustment Evaporator Fan Belt Tension AdjustmentVariable Frequency Drive VFD Replacement Verify Sensor Performance Economizer Operation During Power FailureEvacuation Refrigerant ChargePuronR Refrigerant Gas Valve AdjustmentAltitude Compensation 48PG03-07 Elevation Natural GAS PropaneMain Burners High AltitudeFilter Drier Protective DevicesDiagnostic LEDs Replacement PartsRelief Devices Compressor Sound ShieldAppendix a Local Display and CCN Tables Mode RUN StatusAlrmdisp = CCN StrtOnly Generic = CCNMode Pressures Mode Service TestMode Temperatures Mode Inputs Mode SET PointsOutputs Mode OutputsMode Configuration HTR HT.TYMRT.H MOT.HIA.FN IA.CFII.CF II.FNSPT.C TrimSPT.T SAT.CCCN only Tables Mode Time ClockMode Operating Modes ACT.H OK.HTEN.LO AQ.DVExpansion Range Default CCN CCN Point CCN Write Mode AlarmsExpansion Range Units TABLE/SUB---TABLE StatusVFD Terminal Designations Appendix B VFD InformationVFD Configurations VFD Operation Standard Display ModeVFD Modes Start Up with AssistantStart-Up Assistant Mode Parameters ModeChanged Parameters Mode Drive Parameter Backup ModeVFD Diagnostics Correcting Alarms VFD MaintenanceHistory Heat Sink201---206 Fault Codes101---105 1001 10001002 1003Maintenance Interval Alarm CodesMaintenance Intervals Battery Replacement Main Fan ReplacementControl Panel Cleaning Fan Performance 48PDD05 Vertical Units Appendix C START-UP DataFan Performance 48PDE05 Vertical Units AirflowFan Performance 48PDD06 Vertical Units Rpm Bhp 1500 Fan Performance 48PDE06 Vertical UnitsAvailable External Static Pressure in. wg CFMBhp Rpm Fan Performance 48PDD05 Horizontal UnitsFan Performance 48PDE05 Horizontal Units 1026 1086 1144 1199 1253 Fan Performance 48PDD06 Horizontal UnitsFan Performance 48PDE06 Horizontal Units Fan Performance 50PD06 Vertical Units Fan Performance 50PD05 Vertical UnitsBhp Rpm 1500 Fan Performance 50PD05 Horizontal UnitsGeneral Notes for FAN Performance Data Tables Appendix D Additional START-UP Data Indicate Unit Settings below Control SET Point and Configuration LOGCCN Point Entry 103 104 PRE-START-UP Unit START-UP Checklist106

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.