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Sanyo CH2472, CH1872 service manual Is the fuse blown?, Normal, Replace the controller, Blown

Models: CH1872 CH2472

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Is the fuse blown?

(2)If the self-diagnostics function fails to operate Check the indoor unit.

Is the fuse blown?

Normal

Replace the controller.

No indicators illuminate and the indoor fan does not rotate. Check the power voltage.

Blown

Replace the circuit board or the fuse.

44

Image 44

Sanyo CH2472, CH1872 Is the fuse blown?, Normal, Replace the controller, Blown, Replace the circuit board or the fuse

Contents

KHS1872 + CH1872 KHS2472 + CH2472 DC INVERTER SPLIT SYSTEM AIR CONDITIONERKHS1872 CH1872SPECIAL PRECAUTIONS WARNING When WiringWhen Transporting When InstallingTable of Contents SPECIFICATIONSREFRIGERANT FLOW DIAGRAM MAINTENANCESPECIAL PRECAUTIONS WHEN SERVICING UNIT INSTALLAION INSTRUCTIONS10. CHECKING ELECTRICAL COMPONENTS 11.REFRIGERANT R410AOutdoor Air Intake Temp 1. OPERATING RANGEIndoor Air Intake Temp 2. SPECIFICATIONS 2-1.Unit SpecificationsFeatures WeightIndoor Unit KHS1872Outdoor Unit CH1872Voltage Rating KHS2472CH2472 Voltage Rating KHS2472CH2472 2-2.Major Component Specifications 2-2-1.Indoor UnitRemote Control Unit Fan Control PCBRemote Control Unit Fan Control PCBFan Motor Flap Motor2-2-2.Outdoor Unit Control PCBCompressor Fan MotorControl PCB CompressorFan Motor Heat Exchanger Coil2-3.Other Component Specifications 3. DIMENSIONAL DATA KHS247211-17/32 1-3/8 11-17/32 1-3/8 Insulation of Refrigerant Tubing 4. REFRIGERANT FLOW DIAGRAM4-1.Refrigerant Flow Diagram 5-1.Temperature Charts 5. PERFORMANCE DATA1 High pressure performance chart 2 Operating current performance chart3 Indoor discharge air performance chart Indoor UnitKHS2472 CH2472KHS2472 CH2472CH1872 5-2.Cooling CapacityKHS1872 KHS2472 CH2472CH1872 5-3.Cooling Capacity Low AmbientKHS1872 KHS2472 CH2472CH1872 5-4.Heating CapacityKHS1872 KHS2472 CH24725-5.Air Throw Distance Charts Cooling 6-1.Electrical Characteristics 6. ELECTRICAL DATAKHS2472 CH24721 Voltage:230V Cooling6-2.Electric Wiring Diagrams Indoor Unit KHS1872 KHS2472and/or cleaning any electrical parts and/or cleaning any electrical parts WHT WHT7. MAINTENANCE 7-1.Address Setting of the Remote Control UnitPull the cover upward How to DisconnectHow to Connect 8. FUNCTIONS 8-1.Operation FunctionsEmergency operation AUTO cooling/heating operationHIGH POWER Timer backupNIGHT SETBACK Lamp colorsCompressor discharge temperature control 8-2.Protective FunctionsOverload prevention during heating Freeze preventionDefrosting Sequence Defrost detection and releaseCT Peak current cut-offcontrol PROCEDURE 9. TROUBLESHOOTING9-2.Method of Self-Diagnostics 1Self-diagnosticsLamps Is the fuse blown? NormalReplace the controller Blown9-3.Checking the Indoor and Outdoor Units < Before the Operation > 3-1Condition: E01Continued from the previous page A A Yes 3-2Condition: E12 9-4.Trouble Diagnosis of Fan Motor 9-4-1.Indoor Fan Motor9-4-2.Outdoor Fan Motor Diagnostic procedureDiagnostic results Remedy for symptom 3 toLocations most susceptible to noise TroubleCorrection Locations most susceptible to noise10-1-1.Power Supply Cord 10. CHECKING ELECTRICAL COMPONENTS10-1.Measurement of Insulation Resistance 10-1-2.Indoor UnitFig. 10-2.Checking Continuity of Fuse on PCB AssyFig. SPECIAL PRECAUTIONS WHEN SERVICING UNIT 11-1.Characteristics of New Refrigerant R410A11-1-1.What is New Refrigerant R410A? 11-1-3.Characteristics11-2.Checklist before Servicing Tubing precautionsSize of flare No addition of compressor oil for R410A11-4.Tubing Installation Procedures 11-3.Tools Specifically for R410A11-5-1.Procedure for Replacing Compressor 11-5.In Case of Compressor MalfunctionPage 11-6.In Case Refrigerant is Leaking 11-7-1.When Tubes are Extended 11-7.Charging Additional Refrigerant11-8. Retro-FittingExisting Systems 11-8-1.Use of Existing UnitsAPPENDIX A INSTRUCTION MANUAL KHS1872 + CH1872 KHS2472 + CH2472Features Product Information ContentsAlert Symbols Electrical Requirements Installation LocationSafety Instructions Names of Parts Remote control unit Drain hose Refrigerant tubesRemote Control Unit Air intakes INDOOR UNIT Air outletUnit Display and Operation Button Remote Control Unit Display Remote Control Unit Remote Control Unit continued HIGH POWER buttonQUIET button AUTOUsing the Remote Control Unit Remote Control Unit continuedUsing the Remote Control Unit continued Operation with the Remote Control Unit 1. Automatic OperationOperation with the Remote Control Unit continued 2. Manual Operation3.Adjusting the Fan Speed 4.Fan OnlyOperation with the Remote Control Unit continued STEP STEP STEP5. Night Setback Mode Operation with the Remote Control Unit continued7. HIGH POWER Mode 6. QUIET Mode8. ION Mode Operation with the Remote Control Unit continuedRemote Control Unit Special Remarks‘‘DRY’’ Operation Heating OperationSetting the Timer 1.How to set the present timeSetting the Timer continued REPEAT timerUsing the 1-HourOFF Timer Tips for Energy SavingAdjusting the Airflow Direction Operation without the Remote Control Unit Care and CleaningCare and Cleaning continued CleaningAnti-moldfilter Anti-moldfilter FRONT mark Hook Groove PinCare and Cleaning continued Air Clean FilterTroubleshooting Operating RangeTrouble Possible CauseAPPENDIX B INSTALLATION INSTRUCTIONS KHS1872 + CH1872 KHS2472 + CH2472NOTE Refrigerant service valve size = 5/16 ContentsINSTALLATION INSTRUCTIONS SPECIAL PRECAUTIONS In Case of Improper InstallationWhen Transporting When Installing…1. General 1-1.Tools Required for Installation not supplied1-2.Accessories Supplied with Unit Table 1-3.Optional Copper Tubing Kit2. Installation Site Selection Page 3. How to Install the Indoor Unit trical wiring or conduits are3-1.Remove the Rear Panel from the Unit 3-2.Make a Hole3-3.Install the Rear Panel on the Wall Tablea If Wooden Wall b If Block, Brick, Concrete or Similar Type Wall3-4.Remove the Grille to Install the Indoor Unit How to remove the grilleHow to replace the grille Fig. 19b3-6.Wiring Instructions General precautions on wiring3-5.Shape the Indoor Side Tubing Fig.3-7.Recommended Wire Length and Diameter 3-8.Wiring Instructions for Inter-unitConnections Plastic cover Wiring 10 25 cmInter-unitwiring Earth plate Lock nut Top of conduit connectorHow to connect wiring to the terminal 3-9.Mounting Right-sidetubingFig. 37a Fig. 37bLeft-sidetubing To unmount indoor unit Fig. 4. How to Install the Outdoor Unit4-1.Wiring Instructions for the Outdoor Unit 5. Refrigerant Tubing 5-2.Flaring Procedure with a Flare Tool5-3.Caution before Connecting Tubes Tightly 5-1.Use of the Flaring MethodTable 6. Air Purging Fig. Be sure to completely insertthe hex wrench before Fig. 59c How to Test Run the Air ConditionerFig. 59a Fig. 59b Basic Functions of the Service Valves Pump DownFig. 7. Remote Control Unit Installation Position7-1.Mounting on a Wall 8. Address Switch 8-1.Address Setting of the Remote Control UnitFig. Fig.SANYO Commercial Solutions A Division of SANYO North America Corporation1300 Michael Drive, Suite A Wood Dale, IL 60191, U.S.A Sanyo Canada Inc