Sanyo CH0971, CH1271 service manual Charging Additional Refrigerant, Retro-Fitting Existing Systems

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11-7. Charging Additional Refrigerant

11-7-1. When Tubes are Extended

Observe the proper amount of refrigerant as stated in this service manual or the installation manual that came with the indoor unit. Charge additional refrigerant in liquid state only.

CAUTION

Never charge additional refrigerant if refrigerant is leaking from the unit. Follow instructions given in "11-6. In Case Refrigerant is Leaking" and completely carry out repairs. Only then should you recharge the refrigerant.

11-8. Retro-Fitting Existing Systems

11-8-1. Use of Existing Units

Never use new refrigerant R410A for existing units which use R22. This will cause the air conditioner to

operate improperly and may result in a hazardous condition.

11-8-2. Use of Existing Tubing

If replacing an older unit that used refrigerant R22 with a R410A unit, do not use its existing tubing. Instead, completely new tubing must be used.

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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 SpecificationsKHS0971 CH0971CH1271 KHS1271Indoor Unit Major Component SpecificationsCB-KHS1271 Microprocessor 250V 3A Outdoor Unit CH0971 Outdoor UnitCompressor External FinishOutdoor Unit CH1271 Indoor heat exchanger sensor Other Component SpecificationsCompressor temp sensor Outdoor air temp sensorIndoor Unit KHS0971 Dimensional Data21-3/16 10-13/16 Refrigerant Flow Diagram Refrigerant Flow DiagramInsulation of Refrigerant Tubing After a tube has been insulated To break or crackPerformance Data Temperature ChartsHigh pressure performance chart Indoor Unit KHS1271 Outdoor Unit CH1271 493 Tube service Cooling Capacity Power Supply 115V Single Phase 60Hz Cooling Capacity11,900 BTU/h Cooling Capacity Low Ambient SHC Sensible Heat Capacity BTU/h TH Total Heating Capacity BTU/h Power Supply 115V Single Phase 60Hz Heating CapacityHeating Capacity 14,300 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 CH0971 Cooling Electrical CharacteristicsElectrical Data 8FA2-5257-71600-0 Electric Wiring DiagramsIndoor Unit KHS0971 KHS1271 WHT RED Outdoor Unit CH0971 CH1271Address Setting of the Remote Control Unit MaintenanceON/OFF operation button HR.TIMER button ACL Reset button ION buttonHow to Connect How to DisconnectOperation Functions FunctionsEmergency operation Auto cooling/heating operationLamp colors Timer backupProtective Functions Compressor discharge temperature controlOverload prevention during heating Cold-air prevention during heatingReverse-Cycle Defrosting Defrost detection and releaseCT Peak current cut-off control Method of Self-Diagnostics TroubleshootingPrecautions before Performing Inspection or Repair Indoor Unit Self-diagnostics LampsChecking the Indoor and Outdoor Units Using the TEST/T-RUN terminalsReplace the controller Replace the circuit board or the fuseOff Blinking Illuminated Serial Communication Error Identification ProcedureBefore the Operation Condition E01Terminal board Outdoor Unit Condition E12 Outdoor Fan Motor Trouble Diagnosis of Fan MotorNoise 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-852-6-4180-802-00-2 Features Product Information ContentsAlert Symbols Electrical Requirements Installation LocationSafety Instructions Outdoor Unit Names of PartsQuiet lamp Unit Display and Operation ButtonRemote Control Unit Display On Time Remote Control UnitHour OFF Timer Heat AutoDRY CoolTemperature 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 UnitStep Press 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 TimerCool Sweep DRY FAN Heat Adjusting the Airflow DirectionWhen 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 KitAvoid Installation Site SelectionAdditional Materials Required for Installation Hole of the bottom plate Solid base must not coverTrical 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 UnitShape the Indoor Side Tubing Wiring Instructions General precautions on wiringWiring System Diagram 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 with a Vacuum Pump for Test Run Air PurgingTem. The valve core is similar to Those used in automobile tiresHex wrench before Be sure to completely insertThis may cause the refriger Ant gas to leak. In order toOperation lamp Timer lamp Quiet lamp ION lamp How to Test Run the Air ConditionerPump Down Basic Functions of the Service ValvesMounting on a Wall Remote Control Unit Installation PositionAddress Setting of the Remote Control Unit Address Switch