Sanyo KGS1411, CG1411 service manual Special Precautions When Servicing the Unit

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13. SPECIAL PRECAUTIONS WHEN SERVICING THE UNIT

Important!

For your personal safety, be sure to read and understand the following precautions before servicing.

Injuries can occur from burns or inhalation of toxic gas if servicing is per-

WARNING formed while refrigerant remains in the refrigeration circuit. This servicing includes disassembling brazed tubing connections and removing any refrigeration parts or components.

To avoid risk of injury when servicing the outdoor unit (for instance, when replacing the compressor or repair- ing a refrigerant leak), follow the procedure below for the refrigerant circuits of the outdoor unit.

PROCEDURE

13-1. BLK/WHT Connector Attachment for Servicing

13-1-1.Confirm mains power is switched OFF, then, detach the connectors (BLK and WHT) for the electromag- netic valves, SV1 and SV2, from the terminals CN4 and CN6 on the PCB.

13-1-2.Connect the special connector (field supply) and the connector (BLK and WHT). Following this, re-apply power at 115V and open the electromagnetic valves, SV1 and SV2.

13-1-3.Provide a disconnect switch to the special connector.

13-1-4.Turn the disconnect switch ON to supply power (single-phase, 115V) to the special connector. This makes it possible to force open 2 solenoid valves (SV1 and SV2) in the refrigeration circuit outdoor unit. (Fig. 3)

Important!

The procedures given in “13-2” to “13-5” below must be carried out with the 2 solenoid valves SV1 and SV2 open.

Condition at shipping and operation

Black

White

V2

CN4

CN6

 

Outdoor PCB

V1

Condition at servicing

Power supply

AC115V

Connectors for servicing Disconnect switch (Field supply)

Special connector

Black

White

 

 

V2

CN4

CN6

V1

 

Outdoor PCB

Fig. 1

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Contents GAS Heater AIR Conditioner Case of Improper Installation When Installing…When Transporting When Connecting Refrigerant TubingTable of Contents Iii TroubleshootingOperating Range Temperature Indoor Air Intake Temp Outdoor Air Intake TempUnit Specifications SpecificationsKGS1411 CG1411Governor Setting Pressure Dimensions & WeightSafety Devices BurnerIndoor Unit Major Component SpecificationsGas Connection Outdoor UnitCompressor External FinishRefrigerant Heater NozzleCombination Gas Valve IgniterTransformer ATR-1581T2-U Other Component SpecificationsThermistor Coil sensor Thermistor Room sensorAuto Reset Temperature Limiting Power Relay PRTransformer TR 4FF4L510034000 Thermistor 1 Discharge pressure PB3M-41EUnit Dimensional DataLocation of Service Valves PCB a Internal ComponentsPTC Major Components Combination Gas Valve Proportional Control ValveGas Nozzle Combustion Blower Main BurnerRefrigerant Heater Refrigerant Flow Diagram Refrigerant Flow DiagramCooling Characteristics Performance ChartsHeating Characteristics Performance DataAir Throw Distance Charts CoolingHeating Cooling Capacity 100 Heating CapacityElectrical Characteristics Electrical DataCG1411 Cooling Indoor unit KGS1411 Electric Wiring DiagramsBM RV1 RV2 GV1 GV2 SD3 Printed circuit board POW-CG1411Installation Site Selection Installation InstructionsHot air Heat source Outdoor unit Obstacle above Wiring System Diagram Recommended Wire Length and DiameterMounting on a Wall Remote Control Unit Installation PositionRemovable mounting Non-removable mountingMotion Explanation FunctionHeating CoolingSafety Controls Combustion ControlCombustion Cooling Room Temperature ControlFreeze Prevention Cooling Heating Thermistor Refrigerant ControlReset Function Combustion Saving FunctionSave Function Cold Draft Prevention Function During Heating Operation During Cooling Operation Automatic fan speed Fan Speed ControlDry Operation Dehumidification Normal Automatic OperationChanging fan speed Automatic During Cooling OperationFreeze Prevention Cooling / Dry Cooling Zone Dry a ZoneDry B Zone Overload Prevention Heating Cooling, Dry Operation FlowchartsOperation starts Operation lamp Procedure for Dismantling the Indoor Unit Procedure for Dismantling the UnitHow to remove grille How to remove PCBsHow to remove drain pan How to remove electrical component boxHow to detach fan and fan motor How to detach heat exchangerHow to remove the external panels Procedure for Dismantling the Outdoor UnitHow to detach the rear panel How to detach the combustion blowerHow to detach combination valve How to detach combination valve and gas conduitHow to detach ignition probe and flame sensor electrode How to detach burner unitHow to detach gas nozzle Indoor Unit Alarm Signal Points to DiagnoseManifold Pressure Components Checking Electrical Components11-3-3 Outdoor Unit 11-3-2 Indoor UnitCheck Before and After Troubleshooting TroubleshootingMalfunction in Power Supply Abnormalities in Power TransformerIncorrect Wiring of Inter-unit Wiring Protective Circuit of Outdoor Burner Unit Operated Thermistor Abnormality Indoor Unit OnlyIndoor Fan is Defective Power Circuit Wiring ErrorOutdoor Unit Power Supply Failure Outdoor Unit Power Transformer DefectiveOutdoor Unit Compressor Motor Overload Relay Has Operated Outdoor Unit Fan Does Not Work Outdoor Unit Compressor Motor DefectiveOutdoor Unit Fan Motor Defective Heating Operation Not Possible Flap Motor Does Not WorkLouver Motor Defective Thermistor 1 DefectiveSafety Device Operated Erroneous Flame DetectionIgnition Failure Erroneous Flame-Out Condition Combustion Blower Motor Abnormal Revolution 12-6-8. ON/OFF Valve FailureReversing Valve Failure Reset Method When Error Occurs During Heating Operation DC0V Failure Display on Outdoor Unit and Correction MethodBLK/WHT Connector Attachment for Servicing Special Precautions When Servicing the UnitService on Outdoor Unit Refrigerant RecoveryEvacuation Using Vacuum Pump Refer to Service Valve Construction shown in FigRefrigerant Charging VolumeCharging Gradation Level before ChargingReattaching BLK/WHT Connectors for Operation Appendix What to do if YOU Smell GAS For Your Safety Read Before OperationContents Alert SymbolsProduct Information Features Electrical Requirements Installation LocationSafety Instructions Air intakes Names of PartsAir outlet Outdoor Condensing UnitPower switch to turn off power completely OFF position does not disconnect the power. Use the mainTimer lamp ReceiverSET Temp Button Timer on button TEMP. setting buttonsTimer OFF button TransmitterHour off timer HR. Timer buttonGreen or red Auto Red HeatACL button Cover Using the Remote Control UnitUsing the Remote Control Unit Press the ON/OFF operation button Operation with the Remote Control UnitOperation with the Remote Control Unit Manual Operation When difference between Room temperature and set Automatic Cooling and DRY mode Heating mode ManualTemperature is Temperature is Over High Below 2 F MediumFan Only Night Setback Mode is used for saving energyButton Heating Mode Setting Temperature Press Hour TimeSetting Temperature Press Hour Hours Button TimeHow it works? Special RemarksHeating performance Clicking sound is heard from the air conditionerUsing the 12-Hour on and OFF Timer Setting procedureCancellation procedure Press the Cancel button Using the 1-Hour OFF Timer Adjusting the Airflow Direction Setting the airflow manuallySweep function Operation without the Remote Control Unit Care and CleaningCasing and Grille Indoor Unit How to replace the anti-mold filter Anti-mold filter How to remove the anti-mold filterAir intake grille Anti-mold filterAir FilterArm Troubleshooting Tips for Energy SavingOperating Range For Parts or Service Contact

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