LG Electronics LSC183VMA service manual When a comunication error occurs

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7.When a comunication error occurs.

•The operation indicator of Indoor unit blinks five times.

•The red indicator of Outdoor unit blinks five times.

Check the connecting wires between Indoor and Outdoor unit for the connecting error and the contacting condition.

Check the installation condition of outdoor unit.

Check for the communication error and the operating condition of product after also operating with the remote controller, then taking above 2 minutes.

Apply the power again after about 10 seconds by the power of Outdoor unit is off.

Check for the communication error and the operating condition of product after also operating with the remote controller, then taking above 2 minutes.

Check the PWB assembly of Indoor and Outdoor unit.

Caution: If the connecting wires of Indoor and Outdoor unit are not connected within 2 minutes after the power of Outdoor unit is applied, a communication error will occur. Therefore, the power should be applied after connecting them.

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Contents Room Air Conditioner Contents Details of 2003 LG Model Name Code Type Code of Model MeaningFunctions Indoor UnitOperation ON/OFF Operation Mode Selection Room, Temperature CheckingTemperature Setting Setting the Time or Timer Timer SelectionProduct References LSC183VMADimensions Indoor UnitIndoor Unit Outdoor Unit 18K Gas sideRefrigeration Cycle Diagram Cooling Only ModelsWiring Diagram 18K Cooling Only ModelsCooling Mode Operation Healthy Dehumidification ModeOperation Details Heating Mode Operation Defrost ControlFuzzy Operation C/O Model Fuzzy Operation H/P ModelFuzzy Operation for Cooling On-Timer Operation Airflow Speed SelectionFuzzy Operation for Dehumidification Fuzzy Operation for HeatingOff-Timer Operation Off-Timer ↔ On-Timer OperationSleep Timer Operation Chaos Swing ModeJet Cool Mode Operation H/P Model Remote Control Operation ModeForced Operation Test operationCompressor on Indicator Display FunctionSelf-diagnosis Function Heating ModelInstallation Installation of indoor, Outdoor unitSelect the best location Piping length and elevationPreparing work for Installation Open panel frontCover pipe and cover side remove Drain hose junctionHow to fix installation plate Flaring Work and Connection of Piping Flaring workConnection of piping Indoor Indoor unit installation Wrap the insulation material around the connecting portionInstallation Information For right piping Good case Bad caseConnection of the pipes-Outdoor For right piping. Follow the instruction belowConnecting The Cable Between Indoor Unit and Outdoor Unit Connection of the cableConnection method of the connecting cableExample For strand wiringChecking the Drainage and forming the pipings Checking the drainageForm the piping To check the drainageCircuit Breaker Use a circuit breaker or time delay fuse Connect the cable to the indoor unitAir Purging Air purgingAir purging with vacuum pump PreparationEvacuation Finishing the jobPanel Front Assembly Drive three screwsPrepare remote control Pump Down ProcedureTest Running Settlement of outdoor unitName and Function-Remote Control OperationTo remove the Grille from the Chassis To remove the Control BoxTo remove the Evaporator Before removing the Turbo FanTo remove the Motor Way, 3-way Valve Way Valve Liquid SideProcedure Air purgingCheck for gas leakage Purge the air from the systemPumping down Air purging of the charge hoseSet the 2-way valve to the closed position Re-air purging Balance refrigerant of the 2-way, 3-way valves Gas leakageEvacuation All amount of refrigerant leakedGas Charging After EvacuationConnect the charge hose to the charging cylinder Purge the air from the charge hoseCycle Troubleshooting Guide Trouble analysisYES Product is not operate with the remote controller Compressor/Outdoor Fan are unable to drive When Indoor Fan does not operate Check connecting condition of the CN-MOTOR ConnectorWhen Vertical Louver does not operate When a comunication error occurs Phenomena in case of connecting error Indoor UnitOutdoor Unit Voltage of Connectors according to No. of pinsIndoor Fan Speed Electronic Control Device Main PWB ASSYIndoor UnitMain PWB ASSYOutdoor Unit ModelDisplay PWB Assembly Indoor Unit SUB PCB ASMOutdoor Unit MicomExploded View and Replacement Parts List Parts Listindoor Location Description Remarks LSC183VMAOutdoor unit18K W0CZZParts Listoutdoor Location Description QTY Remarks LSC183VMAMemo Memo August