Carrier 69NT20-531-300 manual Display Only Functions

Page 39

 

 

Table 3-5 Controller Function Codes (Sheet 1 of 3)

 

 

 

 

Code

TITLE

 

DESCRIPTION

No.

 

 

 

 

 

Note: If the function is not applicable, the display will read “-- -- -- -- -- ”

 

 

 

Display Only Functions

 

 

 

 

 

Suction Modulation

 

Displays the SMV percent open. The right display reads 100% when the valve is

Cd01

 

fully open. The valve will usually be at 10% on start up of the unit except in very

 

Valve Opening (%)

 

high ambient temperatures.

 

 

 

 

 

 

 

Cd02

Not Applicable

 

Not used

 

Compressor Motor

 

The current sensor measures current draw in lines L1 & L2 by all of the high

Cd03

 

voltage components. It also measures current draw in compressor motor leg T3.

 

Current

 

The compressor leg T3 current is displayed.

 

 

 

 

 

 

 

Cd04

Line Current,

 

The current sensor measures current on two legs. The third unmeasured leg is cal-

 

culated based on a current algorithm. The current measured is used for control

 

Phase A

 

 

 

and diagnostic purposes. For control processing, the highest of the Phase A and B

 

 

 

Cd05

Line Current,

 

current values is used for current limiting purposes. For diagnostic processing,

 

the current draws are used to monitor component energization.. Whenever a heat-

 

Phase B

 

 

 

er or a motor is turned ON or OFF, the current draw increase/reduction for that

 

 

 

Cd06

Line Current,

 

activity is measured. The current draw is then tested to determine if it falls within

 

the expected range of values for the component. Failure of this test will result in a

 

Phase C

 

 

 

pre-trip failure or a control alarm indication.

 

 

 

 

 

 

 

Cd07

Main Power Voltage

 

The main supply voltage is displayed.

 

 

 

 

Cd08

Main Power Fre-

 

The value of the main power frequency is displayed in Hertz. The frequency dis-

 

quency

 

played will be halved if either fuse F1 or F2 is bad (alarm code AL21).

Cd09

Ambient Tempera-

 

The ambient sensor reading is displayed.

 

ture

 

 

Cd10

Compressor Suction

 

Compressor suction temperature sensor reading is displayed.

 

Temperature

 

 

Cd11

Compressor Dis-

 

Compressor discharge temperature sensor reading is displayed.

 

charge Temperature

 

 

Cd12

Compressor Suction

 

Compressor suction pressure transducer reading is displayed.

 

Pressure

 

 

Cd13

Not Applicable

 

Not used

 

 

 

 

Cd14

Compressor Dis-

 

Compressor discharge pressure transducer reading is displayed.

 

charge Pressure

 

 

Cd15

Unloader Valve

 

The status of the valve is displayed (Open - Closed).

 

 

 

 

Cd16

Compressor Motor

 

Records total hours of compressor run time. Total hours are recorded in incre-

 

Hour Meter

 

ments of 10 hours (i.e., 3000 hours is displayed as 300).

Cd17

Relative Humidity

 

Humidity sensor reading is displayed. This code displays the relative humidity, as

 

(%)

 

a percent value.

Cd18

Software Revision #

 

The software revision number is displayed.

 

 

 

 

 

 

 

This code checks the Controller/DataCORDER battery pack. While the test is

 

 

 

running, “btest” will flash on the right display, followed by the result. “PASS”

 

 

 

will be displayed for battery voltages greater than 7.0 volts. “FAIL” will be dis-

Cd19

Battery Check

 

played for battery voltages between 4.5 and 7.0 volts, and “----------” will be

 

 

 

displayed for battery voltages less than 4.5 volts. After the result is displayed for

 

 

 

four seconds, “btest” will again be displayed, and the user may continue to scroll

 

 

 

through the various codes.

Cd20

Config/Model #

 

This code indicates the dash number of the model for which the Controller is con-

 

figured (i.e., if the unit is a 69NT40-531-100, the display will show “31100”).

 

 

 

Cd21

Economizer Valve

 

The status of the valve is displayed (Open - Closed).

T-309

3-14

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Contents Service Model Safety Summary 309 Safety-2 Safety-3 309 Table of Contents Table of Contents Check Controller Function Codes Connect Remote MonitoringPrecheck Procedure Checking The Stepper valve Valve ReplacementEvaporator Coil Replacement Evaporator Heater Replacement Replacing The Evaporator Fan AssemblyElectrical Wiring Schematic Refrigeration Circuit Schematic Economized Operation Refrigeration Circuit Schematic Standard OperationList of Tables DataCORDER Configuration VariablesUnit is fitted with a scroll compressor Section IntroductionManual, T-300 Section Description Evaporator Section Compressor Section Condenser Section Communications interface module For further information Module which allow communication with a masterOil level range, with the compressor off Model RSH105 Weight Dry 46.5 kg 103 lbTemperature Approved Oil Mobil ST32 Oil Charge 2957 ml 100 ouncesElectrical Data Safety and Protective Devices Refrigeration Circuit 2.5.1 Standard Operation Standard Operation with Receiver Refrigeration Circuit Schematic -- Economized Operation Section Microprocessor Temperature Control SystemKEY Function Controller Software Modes of Operation Perishable Mode -- Economy Controller Alarms Unit PRE-TRIP Diagnostics DCF02=6 Thermistor inputssupply & returnDCF02=2 DCF02=5 Usda thermistor inputsRaw Data Report for ABC1234567 Standard Configuration Download ReportLogging Interval dCF03 DataCORDER may be powered up in any one of four waysDataView DataCORDER Alarms SnAP CnF11 Defrost Off Selection NoOFFStd, Full CnF33 Snap Freeze OptionDisplay Only Functions Plicable with frozen set points Defrost temperature sensor reading is displayedPossibly delaying a needed defrost cycle Sensor ReadingController Function Codes Sheet 3 Controller Alarm Indications Sheet 1 Controller Alarm Indications Sheet 2 Controller Alarm Indications Sheet 3 Memory failure Error DescriptionOnds Draw test is done after 15 secondsP1-1 Draw test is done after 10 secondsCrease, the test fails Supply is comparedTest fails P6-2Requirements Control temperature must be at least 15.6C 60F Pressure switch is open or the condenser fan switch is openTimer is started Denser fan is started and a 60 second timer is startedRequirements Control temperature must be at least 7.2C 45F Set point, the test proceeds to testBy starting P10-0 over Inapplicable Functions Display Title Data 10 DataCORDER Alarm Indications 69NT Fresh AIR Makeup OperationTo start a pre-trip test, do the following Will be displayedWill be displayed Pull Down Falling Rising Controller Operation -- Perishable ModeController Operation -- Frozen Mode Frozen Mode Defrost Section Troubleshooting Unit will not heat or has insuffi Bent motor shaft Will not initiate defrostSuperheat Unit reads abnormal currents Current sensor wiring Check Valve Frontseated Backseated Section ServiceCompressor 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 Two expansion valves are used, the evaporator Wrapped with Insulating compound. SeeRemoving the Expansion Valve Check superheat refer to step Cleaned regularly. The preferred cleaning fluid is freshIf applicable, braze the equalizer connection to Equalizer line14. Unloader Solenoid Valve Start unit and check operationEvaporator FAN Motor Capacitors Valve Override Controls Precheck Procedure TP1 Mounting Stud Type Cut one replacement sensor wire opposite color Cut wires 5 cm 2 inches from shoulder of defecCut one wire of existing cable 40 mm 1-1/2 inch Shorter than the other wireMaintenance of Painted Surfaces 23 Door Hinge Repair Crack, Chip & Hole Repair Kit 24. Insert Location In-lbs Ft-lbs 13.99 18.86 In-lbs #10 Ft-lbs 12.72 17.1414.6 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

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