Remedy, Unit will not Terminate Heating | Carrier 69NT40-521

			REMEDY/
	CONDITION	POSSIBLE CAUSE	REFERENCE
			SECTION
	5.4 UNIT WILL NOT HEAT OR HAS INSUFFICIENT HEATING

		Start-Stop switch OFF or defective	Check
	No power to unit	Circuit breaker OFF or defective	Check
		External power source OFF	Turn on
		Circuit breaker or fuse defective	Replace
		Transformer defective (TR)	Replace
	No control power	Evaporator fan internal motor protector open	6.15
		Heat relay defective	Check
		Heater termination switch open	6.13

		Heater(s) defective	6.14
		Heater contactor or coil defective	Replace
		Evaporator fan motor(s) defective or rotating backwards	6.15/6.16
	Unit will not heat or has insufficient	Evaporator fan motor contactor defective	Replace
	heat	Temperature controller malfunction	5.9
		Defective wiring	Replace
		Loose terminal connections	Tighten
		Low line voltage	2.4
	5.5 UNIT WILL NOT TERMINATE HEATING

		Temperature controller improperly set	Reset
	Unit fails to stop heating	Temperature controller malfunction	5.9
	Unit fails to stop heating	Heater termination switch remains closed along with the	6.13
		Heater termination switch remains closed along with the	6.13
		heat relay

	5.6 UNIT WILL NOT DEFROST PROPERLY

		Defrost timer malfunction	3.1.4
		Loose terminal connections	Tighten
	Will not initiate defrost automatically	Defective wiring	Replace
	Will not initiate defrost automatically	Defrost termination sensor defective or heat termination	Replace
		switch open
		Heater contactor or coil defective	Replace
	Will not initiate defrost manually	Manual defrost switch defective	Replace
	Will not initiate defrost manually	Defrost termination sensor open	4.4.6
		Defrost termination sensor open	4.4.6
	Initiates but relay (DR) drops out	Low line voltage	2.4

	Initiates but does not defrost	Heater contactor or coil defective	Replace
	Initiates but does not defrost	Heater(s) burned out	6.14
		Heater(s) burned out	6.14
	Frequent defrost	Wet load	Normal

T-268-07

5-2

Image 92

Carrier 69NT40-521, 69NT40-511-199 manual Remedy, Unit will not Terminate Heating, Unit will not Defrost Properly

Contents

Container Refrigeration Unit Operation Container Refrigeration Unit Models General Safety Notices Operating PrecautionsMaintenance Precautions Safety-1 268-07 Safety-2 Specific Warning and Caution Statements Table of Contents Operation Section Service Iii 268-07 List of Illustrations 27 Suction Solenoid Valve SSV -- Alco List of Tables Section Introduction Introduction Model Chart Model Transformer Humidity Sensor TransFresh PID 69NT40-511-58 69NT40-511-71 69NT40-511-95 69NT40-521-10 General Description Refrigeration Unit -- Front Section Evaporator Section Refrigeration Unit -- Rear Panels Removed Compressor Section 1011 Condenser Section Condenser Section 268-07 Receiver Section 1716 Water-Cooled Condenser Section Optional Units with Water-Cooled Condenser 6 9 Control Box with a Single-Speed Compressor123 Control Box with a Two-Speed Compressor Optional Refrigeration System Data Electrical Data Power Autotransformer Optional Step-Up Power AutotransformerTo Operate Unit on 380/460 vac Power Supply To Operate Unit on 190/230 vac Power Supply Upper Fresh AIR Makeup Vent Full Open or Closed PositionsLower Fresh AIR Makeup Vent Optional Air Sampling for Carbon Dioxide CO2 Level Refrigeration Circuit with Receiver 10. Refrigeration Circuit with Receiver 268-07 WATER-COOLED Condenser Optional Water--Cooled Condenser with Water Pressure Switch WPWater-Cooled Condenser with Condenser Fan Switch CFS Section Suction Solenoid Valve OperationSuction Solenoid Override Remote Monitoring Optional Unsafe Condition Safety Device Device Setting Safety and Protective DevicesSafety and Protective Devices MICRO-LINK 2i Controller Module Micro-Link 2i Controller/DataCORDER Module Brief Description Procedure for loading software Configuration SoftwareOperational Software Controller Programming Memory Cards Controller Configuration Variables Configuration Title Default Option Number General Layout of the Controller Section KEY Function Display Module Controller Function Codes Controller Function Code AssignmentsCode Title Description Inapplicable Functions Display CPC Variable option 34 is set to F refer to Table Code Title Description Controller Alarms ALL Models Controller Alarm IndicationsModel 69NT40-511-72 Check for recharging or replacing battery pack Microprocessor Error DescriptionERR Controller Temperature Control Condenser Pressure Control CPC Section Operation in the economy mode Code 34 set to on PRE-TRIP Diagnostics PRE-TRIP Selection Menu Title Description Pre-Trip ModePre-Trip Test Codes Component Normal Logic Crel 3 minutes Seconds Seconds Minutes Component Normal LogicCrel Addition, this test is skipped if Addition, the test will fail if Fail Integrated Datacorder Optional Setting Factory Default ConfigurationDataCORDER Configuration DataCORDER Function Codes Code # Title Description DataCORDER Alarms DataCORDER Alarm Indications DataCORDER Alarm Configurations Description Selection Access to DataCORDER Functions DataCorder Standard Configuration Description Tion Generic ModeStandard Mode Pre-Trip Data Recording USDA/ Message Trip CommentUsda Recording Usda Cold Treatment Procedure DataCORDER Scrollback 10. DataCORDER Pre-Trip Data Test # Title Data Standard Configuration Report Sample Falling Rising Temperature CoolingSET Point AIR Step YES Compressor Cycles OFF Operation PRE-TRIP Inspection Before Starting Units equipped with the integrated DataCORDER Starting and Stopping InstructionsAfter Starting Inspection Unit Operation Defrost indicator will remain on throughout this period Probe CheckController Set Above --10C +14F, or --5C +23F optionally Cooling in High Speed with Two-Speed Compressor See Figure 268-07 Control Transformer Cooling in High Speed with Two-Speed Compressor Cooling in Low Speed with Two-Speed Compressor See Figure Cooling in Low Speed with Two-Speed Compressor 268-07 Cooling with Single-Speed Compressor See Figure Cooling with Single-Speed Compressor 268-07 Heating See Figure Heating Mode 268-07 Arctic Snap Freeze OptionDefrost = 18 Volt Energized Circuit = De-energized Circuit Holding Zone Two-Speed Compressor Holding Zone Unit Runs but has Insufficient Cooling Unit Operates Long or Continuously in Cooling Unit will not Defrost Properly RemedyUnit will not Terminate Heating No Evaporator AIR Flow or Restricted AIR Flow Temperature Controller MalfunctionAbnormal Noise or Vibrations Power Autotransformer Malfunction WATER-COOLED Condenser or Water Pressure Switch Closed Manifold Gauge SETOpened Removing the Manifold Gauge Set To Discharge Service or PortBlue Hose Blue Knob Refrigerant Leak Checking Suction and Discharge Service ValvesPumping the Unit Down Evacuation and Dehydration Refrigerant Charge 268-07 Vacuum Pump Connections Compressor -- Model 06DR Adding Refrigerant to System Full ChargeAdding Refrigerant to System Partial Charge 10 9 8 Compressor DisassemblyTurn off valves on both hoses to pump Jack here Exploded View of Valve Plate Oil Pump and Bearing Head Low Profile Gear Oil Pump 11. Crankshaft Assembly Compressor Reassembly Compression Rings Adding Oil to Service Replacement Compressor If compressor is without oilCompressor OIL Level To Check the Oil Level in the Compressor High Pressure Switch To Check Filter-DrierTo Replace Filter-Drier FILTER-DRIER To Replace the Evaporator Coil To Replace the Evaporator Fan AssemblyTo disassemble the Evaporator Fan Assembly To assemble the Evaporator Fan Assembly When to check for a defective capacitorEvaporator FAN Motor Capacitors Removing the capacitor Condenser FAN and Motor Assembly Capacitor analyzerTo Replace Condenser Coil Condenser Coil Unit Off OhmmeterUnit Running Battery To replace the recording thermometer elementSaginomiya Recording Thermometer Calibration Maintenance of Painted Surfaces Power Autotransformer OptionalSensor Checkout Procedure AMBS, DTS, RRS, RTS, SRS & STS Replacing Sensor Probe RTS or STS RRS or SRSReplacing Sensor STS and SRS OLD Style Probe Holder Replacing Sensor RRS and RTS Sensor Mm 1-5/8 inches 35 mm 1/4 inchSensor Cable Heat Shrink Large Heat Shrink Tubing Ambs or DTS Replacing Sensor Ambs or DTSSensor 25.4 mm 1.0 inch Mounting Stud 35mm 1/4 inch Sensor Crimp Fitting Heat Shrink Crimp FittingTubing Coil Checkout Procedure Suction Solenoid Valve SSVReplacing the Coil Replacing Valve Internal Parts -- Alco See Figure Ambient Temperature Cold Coil To Replace ValveThermostatic Expansion Valve Removing Expansion Valve See Figure Installing Expansion Valve To Measure Superheat Removing and Installing the Controller/DataCORDER Module RemovalCONTROLLER/DATACORDER Handling of Controller/DataCORDER Installation Procedure for loading Operational SoftwareProcedure for loading Configuration Software Controller/DataCORDER Programming Procedure Summary of Procedure What You Will Need Pump Fine mesh Support Screen Detailed ProcedureReturn Partlow Bulb Temperature-Resistance Chart Temperature Resistance OhmsWhat You Can Do For Further Help Ambs and DTS Recommended Bolt Torque Values Bolt DIA Threads Torque MKG Free SpinningNonfree Spinning Locknuts ETC Wear Limits For Compressors Compressor Torque Values Temperature Pressure 35F 1.7C Box 0F --17.8C Box 35 F 1.7 C Box 17.8 C Box Ambient Air Temperature35F 1.7C Box 0F --17.8C Box Please Refer to File Diagrams For Schematics and Diagrams Index Index-1 268-07 Index-2 Index-3 268-07 Index-4 Index-5 268-07 Index-6