LG Electronics General Wall Mounted-Inverter Type manual Part 4 Trouble Shooting

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Part 4 Trouble Shooting

1.	2-Way, 3-Way Valve	35
2. Pumping Down		36
3.	Evacuation (All amount of refrigerant leaked)	37
4.	Gas Charging (After Evacuation)	38
5.	Self-diagnosis Function	39
6.	Cycle Troubleshooting Guide	42
7.	Electronic Parts Troubleshooting Guide	44

34Room Air Conditioner

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Contents SVC MANUALGeneral Contents Safety Precautions Nomenclature Part 1 General InformationSafety Precautions Be sure not to do Be sure to follow the instructionPart 1 General Information Inspections after Repair Global Model Name NomenclatureCode Type Code of Model Meaning Part 2 Functions & Controls Part 2 Functions & Controls Function DescriptionCooling Mode Basic Mode ControlsHeating Mode Automatic operation Intake air Temp Setting TempHealthy Dehumidification operation Auto changeover operationJet Cool operation Special Mode ControlsEnergy saving operation in cooling mode Jet Heat operationUtility Functions Auto cleaning operationIndoor temp Operating Mode Setting temp Forced operationNatural Air ControlAuto Wind Air volume controlChaos Swing Sleep timer operation for heating cycle Sleep mode Auto controlSleep timer operation for cooling cycle Auto restartTwo Minutes Stand-by comp Protection Functions & ControlsFive Seconds Stand-by fan Hot startAutomatic defrost 1 9,12kBtu/h ModelStarting to the defrosting operation 2 18,24,30kBtu/h ModelDefrosting Control Algorithm Control algorithm of defrost completionPower Relay Control InverterOverheating Protection Power Module Heat sink temperature control Heat sink sensor failure errorFunction CT1 control Total Current Control Over Current ProtectionCT2 control Model Cooling Heating KBtu/h 18~30 11A 12A 14A DC Peak control Discharge Pipe Temp ControlInverter Compressor 18,24,30kBtu/h Model There can be two situations Constant Compressor only 30kBtu/h ModelCompressor working 12.1 9,12kBtu/h Model Low Ambient control12.2 18, 24, 30kBtu/h Model Operating Contion Oil return control30kBtu/h ModelOil equalizing control30kBtu/h Model Operation ProcessCheck before Test Run Test Run Flow chart Test Run Detail Part 3 Test RunCheck before Test Run Test Run Flow chart StartSettlement of outdoor unit Pump Down ProcedureTest Run Detail Evaluation of the performancePart 4 Trouble Shooting Way, 3-Way Valve Way Valve Liquid SideAir purging of the charge hose ProcedurePumping Down Set the 2-way valve to the closed positionEvacuation All amount of refrigerant leaked Connect the charge hose to the charging cylinder Mount the valve stem nuts and the service port nutGas Charging After Evacuation Purge the air from the charge hoseCycle Troubleshooting Guide Trouble analysisPart 4 Trouble Shooting Electronic Parts Troubleshooting Guide Procedure Specification RemedyTrouble Compressor/Outdoor Fan dont operate 9~30kBtu/h Model Compressor/Outdoor Fan dont operate 18, 24, 30kBtu/h Model When indoor Fan does not operate.9~30kBtu/h Model Self-diagnosis Function Error Indicator12kBtu/h Model Error code Descrition 18,24,30kBtu/h Model Indoor ErrorOutdoor Error Red Green StatusPart Trouble Shooting Troubleshooting Guide9,12kBtu/h Model Description Cause of error Heat-sink Temp. is over Earth port DC Peak Error Description Cause of error Over current Error Description Cause of error Indoor fan is locked Description Cause of error Pipe TH. is short or Troubleshooting CH01, CH02, CH06 Check PointPart 4 Trouble Shooting Troubleshooting CH05, CH53Comp Troubleshooting CH21Copper Comp pipe Troubleshooting CH21, CH22 Troubleshooting CH23, CH28 Troubleshooting CH24, CH25 Troubleshooting CH26, CH27 Troubleshooting CH32, CH33, CH40 Troubleshooting CH41, CH44, CH45, CH46, CH47, CH65 Troubleshooting CH51, CH60 Troubleshooting CH61, CH62 No MFL41161601 August