Manuals / Panasonic / Household Appliance / Air Conditioner

Panasonic CU-4KS31NBU service manual Outdoor Unit CU-4KS24NBU 8FA2-5251-11600-1

Models: CU-4KS31NBU

1 114

Download 114 pages 23.14 Kb

Page 63

Outdoor Unit CU-4KS24NBU

Outdoor Unit CU-4KS24NBU

8FA2-5251-11600-1

63

Image 63

Panasonic CU-4KS31NBU service manual Outdoor Unit CU-4KS24NBU 8FA2-5251-11600-1

Contents

Pay special attention when servicing the unit OUTDOOR UNIT : CU-3KS19NBU CU-4KS24NBUCU-4KS31NBU TECHNICAL & SERVICE MANUALSAFETY PRECAUTIONS which may cause a unit breakdown APPLICABLE INDOOR UNITS Table of ContentsSPECIFICATIONS REFRIGERANT FLOW DIAGRAMSPECIAL PRECAUTIONS WHEN SERVICING UNIT 9. REFRIGERANT R410AAPPENDIX A APPLICABLE INDOOR UNITS Wall Mounted TypeSemi-ConcealedType Outdoor Air Intake Temp 1. OPERATING RANGETemperature Indoor Air Intake TempNumber of Connectable Indoor Units 2. SPECIFICATIONS2-1.Unit Specifications TypeVoltage Rating TypeNumber of Connectable Indoor Units Number of Operatable Indoor UnitsVoltage Rating TypeNumber of Connectable Indoor Units Number of Operatable Indoor UnitsVoltage Rating TypeNumber of Connectable Indoor Units Number of Operatable Indoor UnitsVoltage Rating TypeNumber of Connectable Indoor Units Number of Operatable Indoor UnitsVoltage Rating TypeNumber of Connectable Indoor Units Number of Operatable Indoor UnitsVoltage Rating TypeNumber of Connectable Indoor Units Number of Operatable Indoor UnitsVoltage Rating TypeNumber of Connectable Indoor Units Number of Operatable Indoor UnitsVoltage Rating TypeNumber of Connectable Indoor Units Number of Operatable Indoor UnitsCompressor 2-2.Major Component Specifications2-2-1.Outdoor Unit Control PCBHeat Exchanger Coil Control PCBCompressor Fan MotorHeat Exchanger Coil Control PCBCompressor Fan MotorResistance k ohm 2-3.Other Component SpecificationsTemperature F C Temperature F CUnit: inchmm 852-0-0010-11500-0 3. DIMENSIONAL DATAUnit: inchmm 852-0-0010-20500-0 Unit: inchmm 852-0-0010-20600-0 4. REFRIGERANT FLOW DIAGRAM 4-1.Refrigerant Flow DiagramInsulation of Refrigerant Tubing Insulation of Refrigerant Tubing Indoor unitOutdoor unit Insulation of Refrigerant Tubing Indoor unitOutdoor unit 5-1.Temperature Charts 5-1-1.Temperature Charts CU-3KS19NBU5. PERFORMANCE DATA Outdoor Unit CU-3KS19NBU Indoor Unit CS-MKS9NKU× Outdoor Unit CU-3KS19NBU Indoor Unit CS-MKS12NKU× Cooling CharacteristicsOutdoor Unit CU-3KS19NBU Indoor Unit CS-MKS18NKU× Outdoor Unit CU-3KS19NBU Indoor Unit CS-MKS9NB4U× Page Page Outdoor Unit CU-4KS24NBU Indoor Unit CS-MKS7NKU× 5-1-2.Temperature Charts CU-4KS24NBU3 Indoor discharge air performance chart Cooling Characteristics1 Low pressure performance chart 2 Operating current performance chartOutdoor Unit CU-4KS24NBU Indoor Unit CS-MKS12NKU× Cooling Characteristics3 Indoor discharge air performance chart Cooling Characteristics1 Low pressure performance chart 2 Operating current performance chartOutdoor Unit CU-4KS24NBU Indoor Unit CS-MKS24NKU× 3 Indoor discharge air performance chart Cooling Characteristics1 Low pressure performance chart 2 Operating current performance chart3 Indoor discharge air performance chart Cooling Characteristics1 Low pressure performance chart 2 Operating current performance chart3 Indoor discharge air performance chart Cooling Characteristics1 Low pressure performance chart 2 Operating current performance chart2 Operating current performance chart 5-1-3.Temperature Charts CU-4KS31NBUCooling Characteristics 1 Low pressure performance chart3 Indoor discharge air performance chart Cooling Characteristics1 Low pressure performance chart 2 Operating current performance chartOutdoor Unit CU-4KS31NBU Indoor Unit CS-MKS12NKU× 3 Indoor discharge air performance chart Cooling Characteristics1 Low pressure performance chart 2 Operating current performance chartOutdoor Unit CU-4KS31NBU Indoor Unit CS-MKS24NKU× 3 Indoor discharge air performance chart Cooling Characteristics1 Low pressure performance chart 2 Operating current performance chart3 Indoor discharge air performance chart Cooling Characteristics1 Low pressure performance chart 2 Operating current performance chartPage Indoor Unit : CS-MKS9NKU× 5-2.Cooling CapacityPower Supply : 230V Single Phase 60Hz Outdoor Unit : CU-3KS19NBUCS-MKS12NB4U× CU-3KS19NBUCS-MKS9NKU × CU-4KS24NBUCS-KS18NB4UW+ CS-MKS12NB4U+ CS-MKS12NB4U CU-4KS24NBUCS-MKS9NKU × CU-4KS31NBUCS-MKS9NB4U× CU-4KS31NBUIndoor Unit : CS-MKS9NKU× 5-3.Cooling Capacity Low AmbientPower Supply : 230V Single Phase 60Hz Outdoor Unit : CU-3KS19NBUCS-MKS12NB4U× CU-3KS19NBUCS-MKS9NKU × CU-4KS24NBUCS-KS18NB4UW+ CS-MKS12NB4U+ CS-MKS12NB4U CU-4KS24NBUCS-MKS9NKU × CU-4KS31NBUCS-MKS9NB4U× CU-4KS31NBU6. ELECTRICAL DATA 6-1.Electric Wiring DiagramsOutdoor Unit CU-4KS24NBU 8FA2-5251-11600-1 Outdoor Unit CU-4KS31NBU 8FA2-5251-11400-1 7-1.Explanation of Functions 7. FUNCTIONSCOOL Control/conditionsUnit operation ExplanationExplanation 1/f fluctuation fanControl/conditions Unit operation< Low Ambient Cooling Operation > 7-2-1.Current Control 7-2.Protective Functions2 Current control 7-2-3.Compressor Temperature Control7-2-2 Low Start Current8. TROUBLESHOOTING BEFORE CALLING FOR SERVICE 8-2.Trouble Diagnosis by Error Monitor Lamps 8-2-1.Location of the Error Monitor Lamps8-2-2.Display of the Error Monitor Lamps 8-3-1.Checking the outdoor unit 8-3.Checking the Outdoor System8-4.Trouble Diagnosis of Each Part 8-4-1.Problems of Each Part and Inspection Points3 Compressor 8-4-2.Inspection Points for Each Part1 Outdoor control circuit board 2 Fuse6 Electric expansion valve 7 Branch tubing temperature sensor 8 Breaker9 Refrigerant gas pressure Remedy for symptom 3 to 8-5.Trouble Diagnosis of Fan MotorDiagnostic procedure Diagnostic results9-1-3.Characteristics SPECIAL PRECAUTIONS WHEN SERVICING UNIT9-1.Characteristics of New Refrigerant R410A 9-1-1.What is New Refrigerant R410A?No addition of compressor oil for R410A 9-2.Checklist before ServicingTubing precautions Size of flare9-3.Tools Specifically for R410A 9-4.Tubing Installation Procedures9-5.In Case of Compressor Malfunction 9-5-1.Procedure for Replacing CompressorPage 9-6.In Case Refrigerant is Leaking 9-8-1.Use of Existing Units 9-7-1.When Tubes are Extended9-7.Charging Additional Refrigerant 9-8. Retro-FittingExisting SystemsCU-3KS19NBU CU-4KS24NBU CU-4KS31NBU APPENDIX A INSTALLATION INSTRUCTIONSFor Outdoor Unit ContentsWhen Transporting SPECIAL PRECAUTIONSIn Case of Improper Installation WARNING When Wiringfins of the outdoor unit. You may get injured When ServicingOthers ‡RQRWLQVWDOORQO\DVLQJOHLQGRRUXQLW1. General 2. Installation Site Selection Required Amount Max. Allowable TotalLimit of Limit of Elevation3/89.52mm Outdoor unitIndoor unit Outdoor unitIndoor unit Outdoor unitIndoor unit Outdoor unitIndoor unit Outdoor unitIndoor unit Outdoor unitCS-MKS24NKU Outdoor unitIndoor unit 5/815.88mmAbout Dimensions Air Intake BaffleAir Discharge Baffle Dimensions2. Air Discharge Baffle 3 Installation procedure4 Precautions for installation 1. Air Intake BaffleFig. 6b unit: inch mm2-5.Outer Dimensions of Outdoor Unit Fig. 6aIndoor unit C Indoor unit B 2-6. Diagram of Outdoor Unit InstallationIndoor unit D Indoor unit C Indoor unit B3-1. Embedding the Tubing and Wiring 3. Installation ProcessFig. D C B3-4.Caution before Connecting Tubes Tightly Fig.3-6.Insulation of Refrigerant Tubing Air Purging with a Vacuum Pump for Test Run 4. Air Purgingadapter manual, and use the adapter correctly Fig.Table gas without releasing it into the atmosphere Pump DownTable 5. Wiring Instructions5-1.General Precautions on Wiring 5-2.Recommended Wire Length and DiameterEach wire must be firmly connected 5-4.How to Connect Wiring to the Terminal Fig. 5-5.Wiring Instructions for the Outdoor UnitFig. 6. Test RunChecking tubing and wiring Performing a test run8. Installation Check Sheet 7. Connecting a Home Automation DeviceDC1111-0