Sanyo CH1872, CH2472 service manual Operating Range, Indoor Air Intake Temp Outdoor Air Intake Temp

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1. OPERATING RANGE

	Temperature	Indoor Air Intake Temp.		Outdoor Air Intake Temp.
Cooling	Maximum	95	°F D.B. / 71 °F W.B.	115 °F D.B.
Cooling	Minimum	67	°F D.B. / 57 °F W.B.	0 °F D.B.
	Minimum	67	°F D.B. / 57 °F W.B.	0 °F D.B.
Heating	Maximum	80	°F D.B. / 67 °F W.B.	75 °F D.B. / 65 °F W.B.
Heating	Minimum		_ D.B. / _ W.B.	0 °F D.B.

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Contents Indoor Model No. Product Code No DC Inverter Split System AIR ConditionerPlease Read Before Starting Table of Contents Checking Electrical Components Indoor Air Intake Temp Outdoor Air Intake Temp Operating RangeUnit Specifications SpecificationsKHS1872 CH1872208V CH2472 KHS247212.1 13.5 Indoor Unit Major Component SpecificationsCB-KHS2472 Microprocessor 250V 3A Outdoor Unit CH1872 Outdoor UnitCompressor External FinishOutdoor Unit CH2472 Indoor heat exchanger sensor Other Component SpecificationsCompressor temp sensor Outdoor air temp sensorIndoor Unit KHS1872 Dimensional Data11-17/32 23-15/16 35-7/16900 Refrigerant Flow Diagram Refrigerant Flow DiagramInsulation of Refrigerant Tubing After a tube has been insulated To break or crackLow pressure performance chart Temperature ChartsOperating current performance chart Indoor discharge air performance chartHigh pressure performance chart Wide 73F Cooling Capacity Power Supply 230V Single Phase 60Hz Cooling Capacity24,200 BTU/h Indoor Outdoor Cooling Capacity Low Ambient24,200 BTU/h TH Total Heating Capacity BTU/h Power Supply 230V Single Phase 60Hz Heating CapacityHeating Capacity 29,000 BTU/h Cooling Vertical distance ft Air Throw Distance ChartsRoom air temp F 26.7C Fan speed High Horizontal distance ft Heating Vertical distance ftHeating Electrical Data Electrical CharacteristicsCH1872 Voltage230V Cooling Voltage208V CoolingCH2472 Voltage230V Cooling 8FA2-5257-70500-0 Electric Wiring DiagramsIndoor Unit KHS1872 KHS2472 WHT WHT YEL YEL Button Operation HR.TIMER button ACL Reset button MaintenanceAddress Setting of the Remote Control Unit How to Connect How to DisconnectOperation Functions FunctionsEmergency operation Auto cooling/heating operationLamp colors Timer backupProtective Functions Compressor discharge temperature controlOverload prevention during heating Freeze preventionReverse-Cycle Defrosting Defrost detection and releaseCT Peak current cut-off control Method of Self-Diagnostics TroubleshootingPrecautions before Performing Inspection or Repair Self-diagnostics Lamps Replace the circuit board or the fuse NormalReplace the controller Checking the indoor unit Control Check items unit operation Using the TEST/T-RUN terminalsChecking the Indoor and Outdoor Units Off Blinking Illuminated Serial Communication Error Identification ProcedureBefore the Operation Condition E01Terminal board Outdoor Unit Condition E12 Indoor Fan Motor Trouble Diagnosis of Fan MotorOutdoor Fan Motor Noise malfunction Noise Malfunction and Electromagnetic InterferenceElectromagnetic interference Locations most susceptible to noise Trouble CorrectionChecking Electrical Components Power Supply CordMeasurement of Insulation Resistance Measurement of Insulation Resistance for Electrical PartsChecking Continuity of Fuse on PCB Assy Characteristics of New Refrigerant R410A Refrigerant R410A Special Precautions When Servicing UnitWhat is New Refrigerant R410A? CharacteristicsChecklist before Servicing Tools Specifically for R410A Tubing Installation ProceduresCase of Compressor Malfunction Procedure for Replacing CompressorUnit. This may cause Never charge a large amountDamage to the compressor ExampleRecharging Case Refrigerant is LeakingWelding leaking points Charging Additional Refrigerant When Tubes are ExtendedRetro-Fitting Existing Systems Use of Existing UnitsOI-852-6-4180-801-00-2 Features Product Information ContentsAlert Symbols Electrical Requirements Installation LocationSafety Instructions Names of Parts Quiet lamp Unit Display and Operation ButtonRemote Control Unit Display HR. Timer button Remote Control UnitAdvance button TransmitterFAN Speed selector button Quiet buttonTemperature Display Selector Using the Remote Control UnitHow to Install Batteries Button Time Display Selector buttonUsing the Remote Control Unit Press the ON/OFF operation button Operation with the Remote Control UnitPress the Mode selector button and select the desired mode Operation with the Remote Control UnitPress the TEMP. setting buttons to change the temperature Set the FAN Speed selector button to the setting you wantAdjusting the Fan Speed Night Setback Mode is used for saving energy Cooling and DRY ModeQuiet Mode Special Remarks Operation Indication Setting the TimerExample To set to 1030 pm How to set the on time Example To start operation at 710 am Setting the TimerTo cancel a timer program Press the Cancel button 1030 pm 710 am 1100 am Present timeSetting procedure Using the 1-Hour OFF TimerCancellation procedure Operation together with the Daily ON/OFF Repeat TimerSetting the airflow manually Adjusting the Airflow DirectionHorizontal Sweep functionWhen the air conditioner is not running Operation without the Remote Control UnitCare and Cleaning Cleaning Care and CleaningGrasp both ends of the air Intake grilleNegative ion generator metal electrodes inside plastic case Follow the steps below when the generator has become dirtyOperating Range TroubleshootingTrouble Possible Cause Remedy Max DB / 71 F WB Min DB / 57 F WBAppendix B Installation Instructions Contents Installation InstructionsPlease Read Before Starting Accessories Supplied with Unit Table Tools Required for Installation not suppliedGeneral Optional Copper Tubing KitAdditional Materials Required for Installation Installation Site SelectionSolid base must not cover the hole of the bottom plate Trical wiring or conduits are How to Install the Indoor UnitRemove the Rear Panel from the Unit Make a HoleIf Block, Brick, Concrete or Similar Type Wall Install the Rear Panel on the WallIf Wooden Wall How to replace the grille Remove the Grille to Install the Indoor UnitHow to remove the grille Shape the Indoor Side Tubing Wiring Instructions General precautions on wiringAWG Recommended Wire Length and DiameterWiring Instructions for Inter-unit Connections For stranded wiring How to connect wiring to the terminal For Indoor UnitFor Outdoor Unit For solid core wiring or F-cable Right-side tubing MountingDrain cap Switching drain hose and drain capLeft-side tubing Tubing and wiring to the out Do not supply power toTo unmount indoor unit Unit or operate it until allWiring Instructions for the Outdoor Unit How to Install the Outdoor UnitFirst refer to . Installation Site Selection To 0.5 mm Adjust so that the amount of tube Flaring Procedure with a Flare ToolRefrigerant Tubing Use of the Flaring MethodFinishing the Installation Connecting Tubing between Indoor and Outdoor UnitsInsulation of Refrigerant Tubing To prevent heat loss and wet floors due to dripping of conAir Purging Attempting to turn the valve Be sure to completely insertHex wrench before How to Test Run the Air Conditioner When opening or clos Ing the service valve Basic Functions of the Service ValvesStem, use the accessory Pump DownMounting on a Wall Remote Control Unit Installation PositionAddress Setting of the Remote Control Unit Address Switch

1. OPERATING RANGE

Indoor Air Intake Temp.

Outdoor Air Intake Temp.