Panasonic CU-4KS31NBU service manual DC1111-0

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DC1111-0

Page 113 Page 114
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Page 113 Page 114
Contents DC Inverter MULTI-SYSTEM AIR Conditioner Safety Precautions Prohibit Table of Contents Appendix a Wall Mounted Type Semi-Concealed TypeOperating Range Indoor Unit CS-MKS9NKU × Unit SpecificationsOutdoor Unit CU-3KS19NBU Duct Less Type RatedOutdoor Unit Indoor Unit208V CU-4KS24NBU BTU/h/W Compressor Locked Rotor Amperes 20,600 CU-4KS31NBU Indoor Unit CS-MKS9NKU 4units Outdoor Unit CU-4KS31NBU 1unit 24,200 Major Component Specifications Outdoor UnitOutdoor Unit CU-4KS24NBU Outdoor Unit CU-4KS31NBU Other Component Specifications CU-3KS19NBU CU-4KS24NBU CU-4KS31NBUDimensional Data Unit inchmm 852-0-0010-20500-0 Unit inchmm 852-0-0010-20600-0 Indoor unit Refrigerant Flow DiagramInsulation of Refrigerant Tubing Outdoor unitIndoor unit Outdoor unit 1/4 Strainer Header Sub Main Compressor Accumulator Temperature Charts Temperature Charts CU-3KS19NBUOutdoor Unit CU-3KS19NBU Indoor Unit CS-MKS7NKU × Outdoor Unit CU-3KS19NBU Indoor Unit CS-MKS9NKU × Cooling Characteristics Outdoor Unit CU-3KS19NBU Indoor Unit CS-MKS12NKU ×Outdoor Unit CU-3KS19NBU Indoor Unit CS-MKS18NKU × Outdoor Unit CU-3KS19NBU Indoor Unit CS-MKS9NB4U × Outdoor Unit CU-3KS19NBU Indoor Unit CS-MKS12NB4U × Outdoor Unit CU-3KS19NBU Indoor Unit CS-KS18NB4UW × Temperature Charts CU-4KS24NBU Outdoor Unit CU-4KS24NBU Indoor Unit CS-MKS7NKU ×Outdoor Unit CU-4KS24NBU Indoor Unit CS-MKS9NKU × Outdoor Unit CU-4KS24NBU Indoor Unit CS-MKS12NKU × Outdoor Unit CU-4KS24NBU Indoor Unit CS-MKS18NKU × Outdoor Unit CU-4KS24NBU Indoor Unit CS-MKS24NKU × Outdoor Unit CU-4KS24NBU Indoor Unit CS-MKS9NB4U × Outdoor Unit CU-4KS24NBU Indoor Unit CS-MKS12NB4U × Outdoor Unit CU-4KS24NBU Indoor Unit CS-KS18NB4UW × Temperature Charts CU-4KS31NBU Outdoor Unit CU-4KS31NBU Indoor Unit CS-MKS9NKU × Outdoor Unit CU-4KS31NBU Indoor Unit CS-MKS12NKU × Outdoor Unit CU-4KS31NBU Indoor Unit CS-MKS18NKU × Outdoor Unit CU-4KS31NBU Indoor Unit CS-MKS24NKU × Outdoor Unit CU-4KS31NBU Indoor Unit CS-MKS9NB4U × Outdoor Unit CU-4KS31NBU Indoor Unit CS-MKS12NB4U × Outdoor Unit CU-4KS31NBU Indoor Unit CS-KS18NB4UW × Cooling Capacity Indoor OutdoorPower Supply 230V Single Phase 60Hz Cooling Capacity CS-MKS12NB4U ×CS-MKS9NKU × CS-KS18NB4UW + CS-MKS12NB4U + CS-MKS12NB4U 30,600 BTU/h CS-MKS9NB4U × Cooling Capacity Low Ambient 15,180 18,570 19,250 25,420 19,410 19,360 24,830 19,520 24,260 30,760 22,560 28,790 22,730 Electric Wiring Diagrams Outdoor Unit CU-3KS19NBU 8FA2-5251-11800-1Outdoor Unit CU-4KS24NBU 8FA2-5251-11600-1 Outdoor Unit CU-4KS31NBU 8FA2-5251-11400-1 Functions Explanation of FunctionsCool Fluctuation fan DRYLow Ambient Cooling Operation Description of function Protective FunctionsCurrent Control Automatic frequency controlCompressor Temperature Control Low Start CurrentCurrent control Troubleshooting Before Calling for Service Precautions before Performing Inspection or RepairTrouble Diagnosis by Error Monitor Lamps Location of the Error Monitor LampsDisplay of the Error Monitor Lamps Work procedure Check items unit operation Checking the Outdoor SystemChecking the outdoor unit Problems of Each Part and Inspection Points Trouble Diagnosis of Each PartFuse Inspection Points for Each PartOutdoor control circuit board CompressorElectric expansion valve CU-3KS19NBU MV0 MV1 MV2 CU-4KS24NBU MV3 CU-4KS31NBUBranch tubing temperature sensor BreakerRefrigerant gas pressure Remedy for symptom 3 to Diagnostic procedureDiagnostic results Trouble Diagnosis of Fan MotorCharacteristics Characteristics of New Refrigerant R410AWhat is New Refrigerant R410A? Components mixing proportionsChecklist before Servicing Tubing Installation Procedures Tools Specifically for R410AProcedure for Replacing Compressor Case of Compressor MalfunctionTo prevent the composition Amount in the charging cylinder is less than 20%Example R410A from changingCase Refrigerant is Leaking Welding leaking pointsRecharging Retro-Fitting Existing Systems When Tubes are ExtendedCharging Additional Refrigerant Use of Existing Units852-6-4190-581-00-1 Contents For Outdoor UnitPlease Read Before Starting Fins of the outdoor unit. You may get injured ‡ 8VHWKHIODUHPHWKRGIRUFRQQHFWLQJWXELQJGeneral Installation Site Selection For wall-mounted unitsFor ceiling-mounted cassette units H1, H2, H3, H4 Connecting Indoor Units Connecting indoor unit for CU-3KS19NBUConnecting indoor unit for CU-4KS24NBU 815.88mm Locally purchased Connecting indoor unit for CU-4KS31NBU CS-MKS24NKU Front Baffle Plate for the Outdoor UnitIt is recommended to use baffle plates BackAir Intake Baffle Air Discharge BafflePrecautions for installation CU-4KS24NBU Outer Dimensions of Outdoor UnitCU-3KS19NBU CU-4KS31NBUDiagram of Outdoor Unit Installation Never install only a single indoor unitInstallation Process Flaring Procedure with a Flare ToolUse of the Flaring Method To 0.5 mm Adjust so that the amount of tube Tubing Connections For wall-mounted units Insulation of Refrigerant TubingTo prevent heat loss and wet floors due to dripping of con  For ceiling-mounted cassette unitsFinishing the Installation Air Purging Air Purging with a Vacuum Pump for Test Run External diameter of service port R410A 5/16 Adapter manual, and use the adapter correctly Pump Down What is pump-down?Pump-down procedure If pump-down is not possibleWiring Instructions General Precautions on WiringRecommended Wire Length and Diameter Disconnect switch may be required by national or local codes  For stranded wiring How to connect wiring to the terminalFor Outdoor Unit  For solid core wiring or F-cable For Indoor UnitIndoor unit B Wiring Instructions for the Outdoor UnitIndoor unit D Indoor unit CChecking tubing and wiring Test RunPerforming a test run Connecting a Home Automation Device Installation Check SheetDC1111-0
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