Carrier 69NT20-531-300 manual DataCORDER Alarm Indications

Page 52

 

Table 3-10 DataCORDER Alarm Indications

 

 

 

 

 

To Access: Press ALT. MODE key

 

 

 

Code No.

TITLE

DESCRIPTION

 

 

The supply recorder sensor reading is outside of the range of -50_C to

 

Recorder Supply

70_C (-58_F to +158_F) or, the probe check logic has determined there is

 

a fault with this sensor.

dAL70

Temperature Out of

 

 

Range

NOTE

 

 

 

 

The P5 Pre-Trip test must be run to inactivate the alarm.

 

 

The return recorder sensor reading is outside of the range of -50_C to

 

 

70_C (-58_F to +158_F) or, the probe check logic has determined there is

dAL71

Recorder Return Tem-

a fault with this sensor.

perature Out of Range

 

 

NOTE

 

 

 

 

The P5 Pre-Trip test must be run to inactivate the alarm.

dAL72-74

USDA Temperatures

The USDA probe temperature reading is sensed outside of -50 to 70°C

1, 2, 3 Out of Range

(-58 to 158°F) range.

 

dAL75

Cargo Probe 4 Out of

The cargo probe temperature reading is outside of -50 to 70°C (-58 to

Range

158°F) range.

 

dAL76, 77

Future Expansion

These alarms are for future expansion, and are not in use at this time.

 

 

 

 

 

The network data point is outside of its specified range. The DataCORD-

 

 

ER is configured by default to record the supply and return recorder sen-

dAL78-85

Network Data Point

sors. The DataCORDER may be configured to record up to 8 additional

network data points. An alarm number (AL78 to AL85) is assigned to

1 - 8 Out of Range

 

each configured point. When an alarm occurs, the DataCORDER must be

 

 

 

 

interrogated to identify the data point assigned. When a humidity sensor is

 

 

installed, it is usually assigned to AL78.

dAL86

RTC Battery Low

The Real Time Clock (RTC) backup battery is too low to adequately

maintain the RTC reading.

 

 

 

 

An invalid date or time has been detected. This situation may be corrected

dAL87

RTC Failure

by changing the Real Time Clock (RTC) to a valid value using the Data-

 

 

View.

dAL88

DataCORDER

A write of critical DataCORDER information to the EEPROM has failed.

EEPROM Failure

 

 

dAL89

Flash Memory Error

An error has been detected in the process of writing daily data to the non-

volatile FLASH memory.

 

 

dAL90

Future Expansion

This alarm is for future expansion, and is not in use at this time.

 

 

 

dAL91

Alarm List Full

The DataCORDER alarm queue is determined to be full (eight alarms).

 

 

 

3-27

T-309

Page 51 Page 53
Image 52
Page 51 Page 53
Contents Service Model Safety Summary 309 Safety-2 Safety-3 309 Table of Contents Table of Contents Connect Remote Monitoring Check Controller Function CodesValve Replacement Evaporator Coil Replacement Evaporator Heater ReplacementReplacing The Evaporator Fan Assembly Precheck Procedure Checking The Stepper valveElectrical Wiring Schematic Refrigeration Circuit Schematic Standard Operation Refrigeration Circuit Schematic Economized OperationDataCORDER Configuration Variables List of TablesSection Introduction Unit is fitted with a scroll compressorManual, T-300 Section Description Evaporator Section Compressor Section Condenser Section Module which allow communication with a master Communications interface module For further informationModel RSH105 Weight Dry 46.5 kg 103 lb TemperatureApproved Oil Mobil ST32 Oil Charge 2957 ml 100 ounces Oil level range, with the compressor offElectrical Data Safety and Protective Devices Refrigeration Circuit 2.5.1 Standard Operation Standard Operation with Receiver Refrigeration Circuit Schematic -- Economized Operation Temperature Control System Section MicroprocessorKEY Function Controller Software Modes of Operation Perishable Mode -- Economy Controller Alarms Unit PRE-TRIP Diagnostics Thermistor inputssupply & return DCF02=2DCF02=5 Usda thermistor inputs DCF02=6Standard Configuration Download Report Raw Data Report for ABC1234567DataCORDER may be powered up in any one of four ways Logging Interval dCF03DataView DataCORDER Alarms CnF11 Defrost Off Selection NoOFF Std, FullCnF33 Snap Freeze Option SnAPDisplay Only Functions Defrost temperature sensor reading is displayed Possibly delaying a needed defrost cycleSensor Reading Plicable with frozen set pointsController Function Codes Sheet 3 Controller Alarm Indications Sheet 1 Controller Alarm Indications Sheet 2 Controller Alarm Indications Sheet 3 Error Description Memory failureDraw test is done after 15 seconds P1-1Draw test is done after 10 seconds OndsSupply is compared Test failsP6-2 Crease, the test failsPressure switch is open or the condenser fan switch is open Timer is startedDenser fan is started and a 60 second timer is started Requirements Control temperature must be at least 15.6C 60FSet point, the test proceeds to test Requirements Control temperature must be at least 7.2C 45FBy starting P10-0 over Inapplicable Functions Display Title Data 10 DataCORDER Alarm Indications Operation 69NT Fresh AIR MakeupWill be displayed To start a pre-trip test, do the followingWill be displayed Controller Operation -- Perishable Mode Pull Down Falling RisingController Operation -- Frozen Mode Frozen Mode Defrost Section Troubleshooting Unit will not heat or has insuffi Will not initiate defrost Bent motor shaftSuperheat Unit reads abnormal currents Current sensor wiring Check Section Service Valve Frontseated BackseatedCompressor in a deep vacuum, internal dam- age will result Refrigerant Leak Checking Remove all refrigerant using a refrigerant recovery system Refrigerant Charge Compressor Upper Mounting Compressor OIL Level Condenser FAN and Motor Assembly Wrapped with Insulating compound. See Two expansion valves are used, the evaporatorRemoving the Expansion Valve Cleaned regularly. The preferred cleaning fluid is fresh If applicable, braze the equalizer connection toEqualizer line Check superheat refer to stepStart unit and check operation 14. Unloader Solenoid ValveEvaporator FAN Motor Capacitors Valve Override Controls Precheck Procedure TP1 Mounting Stud Type Cut wires 5 cm 2 inches from shoulder of defec Cut one wire of existing cable 40 mm 1-1/2 inchShorter than the other wire Cut one replacement sensor wire opposite colorMaintenance of Painted Surfaces 23 Door Hinge Repair Crack, Chip & Hole Repair Kit 24. Insert Location In-lbs #10 Ft-lbs 12.72 17.14 In-lbs Ft-lbs 13.99 18.8614.6 49.4 37.08 12.3 41.6 31.25 32.8 24.64 22.7 17.00 11.9 Section Electrical Wiring Schematic Schematic Diagram Wiring Diagram Sheet 1 Wiring Diagram Sheet 2 Index 309 Index-2

69NT20-531-300 specifications

The Carrier 69NT20-531-300 is a cutting-edge rooftop unit designed to meet the demanding requirements of commercial heating and cooling applications. This model embodies Carrier’s commitment to energy efficiency, reliability, and advanced technological features that enhance indoor comfort while minimizing operational costs.

One of the standout features of the Carrier 69NT20-531-300 is its high energy efficiency. It is equipped with advanced compressor technology that optimizes performance while reducing energy consumption. This ensures that businesses can maintain a comfortable indoor climate without incurring exorbitant utility bills. With a high Seasonal Energy Efficiency Ratio (SEER) and Energy Efficiency Ratio (EER), users can expect not only enhanced comfort but also significant cost savings over time.

The cooling capabilities of the 69NT20-531-300 are complemented by its robust heating options. This unit utilizes a gas heat exchanger, ensuring quick and even heating throughout the space. The combination of cooling and heating capabilities in one compact unit makes it a versatile choice for various applications, including retail spaces, offices, and warehouses.

In addition to its impressive performance specifications, the Carrier 69NT20-531-300 incorporates innovative technologies that further enhance its functionality. The unit comes with advanced controls, allowing for precise temperature regulation and zoning capabilities. This ensures that different areas of a building can maintain their desired temperatures based on usage, improving overall energy efficiency.

Durability is another hallmark of the Carrier 69NT20-531-300. The unit is constructed with high-quality materials and features a weather-proof cabinet that protects it from the elements, ensuring long-term reliability even in harsh conditions. Furthermore, its modular design simplifies maintenance, making it easy for technicians to access critical components.

The 69NT20-531-300 is also designed with low noise operation in mind. It employs sound-dampening technology to ensure that operations are quiet, making it an ideal choice for locations where noise reduction is a priority, such as schools or healthcare facilities.

Overall, the Carrier 69NT20-531-300 stands out as a premier choice for businesses looking for an efficient, reliable, and feature-rich rooftop HVAC unit. Its blend of energy efficiency, advanced technology, and durability positions it as a leader in commercial heating and cooling solutions, making it a valuable investment for any commercial property.
Top Page Image Contents