Carrier 69NT20-531-300 manual Inapplicable Functions Display

Page 50

 

Table 3-8 DataCORDER Function Code Assignments

 

 

 

 

 

 

 

NOTE

 

 

Inapplicable Functions Display “----------”

 

 

 

To Access: Press ALT. MODE key

 

 

 

 

Code

TITLE

 

DESCRIPTION

No.

 

 

 

 

dC1

Recorder Supply

 

Current reading of the supply recorder sensor.

Temperature

 

 

 

 

dC2

Recorder Return

 

Current reading of the return recorder sensor.

Temperature

 

 

 

 

dC3-5

USDA 1,2,3 Tem-

 

Current readings of the three USDA probes.

peratures

 

 

 

 

 

Network Data

 

Current values of the network data points (as configured). Data point 1 (Code

dC6-13

 

6) is generally the humidity sensor and its value is obtained from the Control-

Points 1-8

 

 

 

ler once every minute.

 

 

 

 

 

 

 

dC14

Cargo Probe 4 Tem-

 

Current reading of the cargo probe #4.

 

perature

 

 

dC15-19

Future Expansion

 

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

 

 

 

 

 

Temperature Sensors

 

Current calibration offset values for each of the five probes: supply, return,

dC20-24

 

USDA #1, #2, and #3. These values are entered via the interrogation pro-

 

1-5 Calibration

 

gram.

 

 

 

 

 

 

 

dC25

Future Expansion

 

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

 

 

 

 

 

 

 

The DataCORDER serial number consists of eight characters. Function code

dC26,27

S/N, Left 4, Right 4

 

dC26 contains the first four characters. Function code dC27 contains the last

 

four characters. (This serial number is the same as the Controller serial num-

 

 

 

 

 

 

ber)

 

 

 

 

dC28

Minimum Days Left

 

An approximation of the number of logging days remaining until the Data-

 

 

 

CORDER starts to overwrite the existing data.

dC29

Days Stored

 

Number of days of data that are currently stored in the DataCORDER.

 

 

 

 

 

Date of last Trip

 

The date when a Trip Start was initiated by the user. In addition, if the system

dC30

 

goes without power for seven continuous days or longer, a trip start will auto-

start

 

 

 

matically be generated on the next AC power up.

 

 

 

 

 

 

 

 

 

 

Shows the current status of the optional battery pack.

dC31

Battery Test

 

PASS: Battery pack is fully charged.

 

 

 

FAIL: Battery pack voltage is low.

dC32

Time: Hour, Minute

 

Current time on the real time clock (RTC) in the DataCORDER.

 

 

 

 

dC33

Date: Month, Day

 

Current date (month and day) on the RTC in the DataCORDER.

 

 

 

 

dC34

Date: Year

 

Current year on the RTC in the DataCORDER.

dC35

Cargo Probe 4

 

Current calibration value for the Cargo Probe. This value is an input via the

Calibration

 

interrogation program.

 

 

3-25

T-309

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Page 49 Page 51
Contents Service Model Safety Summary 309 Safety-2 Safety-3 309 Table of Contents Table of Contents Connect Remote Monitoring Check Controller Function CodesReplacing The Evaporator Fan Assembly Valve ReplacementEvaporator Coil Replacement Evaporator Heater Replacement 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 informationApproved Oil Mobil ST32 Oil Charge 2957 ml 100 ounces Model RSH105 Weight Dry 46.5 kg 103 lbTemperature 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 DCF02=5 Usda thermistor inputs Thermistor inputssupply & returnDCF02=2 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 CnF33 Snap Freeze Option CnF11 Defrost Off Selection NoOFFStd, Full SnAPDisplay Only Functions Sensor Reading Defrost temperature sensor reading is displayedPossibly delaying a needed defrost cycle 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 10 seconds Draw test is done after 15 secondsP1-1 OndsP6-2 Supply is comparedTest fails Crease, the test failsDenser fan is started and a 60 second timer is started Pressure switch is open or the condenser fan switch is openTimer is started Requirements Control temperature must be at least 15.6C 60FBy starting P10-0 over Requirements Control temperature must be at least 7.2C 45FSet point, the test proceeds to test 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 Removing the Expansion Valve Two expansion valves are used, the evaporatorWrapped with Insulating compound. See Equalizer line Cleaned regularly. The preferred cleaning fluid is freshIf applicable, braze the equalizer connection to 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 Shorter than the other wire Cut wires 5 cm 2 inches from shoulder of defecCut one wire of existing cable 40 mm 1-1/2 inch 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.

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