LG Electronics General Wall Mounted-Inverter Type manual No MFL41161601 August

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P/NO : MFL41161601	AUGUST, 2007

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Contents SVC MANUALGeneral Contents Part 1 General Information Safety Precautions NomenclatureBe sure not to do Be sure to follow the instruction Safety PrecautionsPart 1 General Information Inspections after Repair Global Model Name NomenclatureCode Type Code of Model Meaning Part 2 Functions & Controls Function Description Part 2 Functions & ControlsCooling Mode Basic Mode ControlsHeating Mode Auto changeover operation Intake air Temp Setting TempHealthy Dehumidification operation Automatic operationJet Heat operation Special Mode ControlsEnergy saving operation in cooling mode Jet Cool operationForced operation Auto cleaning operationIndoor temp Operating Mode Setting temp Utility FunctionsNatural Air ControlAuto Wind Air volume controlChaos Swing Auto restart Sleep mode Auto controlSleep timer operation for cooling cycle Sleep timer operation for heating cycleHot start Protection Functions & ControlsFive Seconds Stand-by fan Two Minutes Stand-by comp1 9,12kBtu/h Model Automatic defrost2 18,24,30kBtu/h Model Starting to the defrosting operationControl algorithm of defrost completion Defrosting Control AlgorithmInverter Power Relay ControlOverheating 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 Discharge Pipe Temp Control DC Peak 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 Operation Process Oil return control30kBtu/h ModelOil equalizing control30kBtu/h Model Operating ContionPart 3 Test Run Check before Test Run Test Run Flow chart Test Run DetailCheck before Test Run Start Test Run Flow chartEvaluation of the performance Pump Down ProcedureTest Run Detail Settlement of outdoor unitPart 4 Trouble Shooting Way Valve Liquid Side Way, 3-Way ValveSet the 2-way valve to the closed position ProcedurePumping Down Air purging of the charge hoseEvacuation All amount of refrigerant leaked Purge the air from the charge hose Mount the valve stem nuts and the service port nutGas Charging After Evacuation Connect the charge hose to the charging cylinderTrouble analysis Cycle Troubleshooting GuidePart 4 Trouble Shooting Procedure Specification Remedy Electronic Parts Troubleshooting GuideTrouble 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 Red Green Status 18,24,30kBtu/h Model Indoor ErrorOutdoor Error Error code DescritionPart 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 Check Point Troubleshooting CH01, CH02, CH06Troubleshooting CH05, CH53 Part 4 Trouble ShootingComp 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