LG Electronics LSU090CE, LSN090CE, LSU120CE Product is not operate with the remote controller

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Troubleshooting Guide

The product is not operate with the remote controller.

Turn on Main Power

While the compressor has been stopped, the compressor does not operate owing to the delaying function for 3 minutes after stopped.

When the compressor stopped Indoor Fan is driven by a low speed. At this point the wind speed is not controlled by the remote controller. (When operated in the Sleeping Mode, the wind speed is set to the low speed by force.)

Cause by the remote controller

When the mark( ) is displayed in LCD screen, replace battery.

When the detect switch(double key) inside the remote controller door is fault, it is impossible to operate temperature regulating(/) and wind speed selecting.

Check the connecting circuit between the remote controller MICOM (No. ) - R17(2) - IR LED - Q1 - R16(2.2K).

Caused by other parts except the remote controller

Check the contact of CN-DISP connector.

Check DISP PWB Ass'y

- Voltage between CN DISP - : DC +5V

Check point

Check the connecting circuit between PIN 43 - R11L(1K) - C11L(680PF) - MICOM PIN

Check Receiver Ass'y

54Room Air Conditioner

Image 54
Contents Room Air Conditioner Table of Contents Do not modify or extend the power cord Safety PrecautionsInstallation Be sure not to do Be sure to follow the instructionOperation Moisture may condense and wet or damage furnishings Keep level even when installing the product Low refrigerant levels may cause product failureSolvents, etc OccupantsSalt spray directly On the product. outdoor unitDisuse Do not drink the water drained from the unitReplace all the batteries in the remote Dimensions Symbols Used in this ManualIndoor Unit Model Btu Series Dimension Mminch 109042.9 30011.8 1787.0 Outdoor Unit 9k, 12k18k, 24k DIMFeatures IntroductionInstallation Installation PartsInstallation Tools Installation Map Bushing-SleeveConfirm The Refrigerant This Product Contains R-410A RefrigerantIndoor unit Rooftop InstallationsSelect The Best Location Outdoor unitPiping Length And Elevation Evap Moz/ftHow To Mount Installation Plate Drill a Hole In The WallBurrs removal Flaring WorkCut the pipes and the cable Putting nut onConnecting The Piping Indoor unit installationIndoor Wrap the insulation material around the connecting portion Tighten the flare nut with a wrenchInsert the connecting cable into the indoor unit Indoor unit installationConnection Indoor Correct case Incorrect caseConnection Of The Drain Hose Connection Of Piping -OutdoorWiring Diagram Connection Of The CableRoom Air Conditioner Checking The Drainage Drain pipingForming The Piping Seal small openings around pipings with a gum type sealerPreparation Air PurgingAir purging With Vacuum Pump Leak testEvacuation Finishing the jobCharging Btu/hSettlement of outdoor unit Prepare remote controlTest Running Evaluation of the performanceOperation Cooling Mode OperationHealthy Dehumidification Mode Function of ControlsHeating Mode Operation Defrost ControlJet Cool Mode Operation C/O Model Sleep Timer OperationChaos Natural Wind Mode Jet Cool Mode Operation H/P ModelAuto restart Forced operationTest operation Protection of the evaporator pipe from frostingDisplay Function Self-diagnosis FunctionHeating Model Remote Control Operations Operation ModeDisassembly To remove the Grille from the ChassisTo remove the Control Box To remove the Motor Cover Cooling Only Models Troubleshooting GuideRefrigeration Cycle Diagram Cooling & Heating ModelsWay, 3-way Valve Way Valve Liquid SideProcedure Pumping DownBalance Refrigerant of the 3-way Valve Vacuum pump Gas Charging After EvacuationAccording to Indoor & Outdoor Temperature Method of using graphMethod of using equation Additional gas chargingCycle Parts Trouble analysisElectronic Parts 9k model Product does not operate at allElectronic Parts 18k model Product is not operate with the remote controller Compressor/Outdoor Fan are unable to drive.9k Model Compressor/Outdoor Fan are unable to drive.18k Model When indoor Fan does not operate NectorWhen Vertical Louver does not operate When a comunication error occurs Phenomena in case of connecting error Indoor UnitOutdoor Unit Schematic Diagram Electric Control DeviceOutdoor 9k, 12k Outdoor 18k, 24k Wiring Diagram Models 9kC/O Models 12kH/P, 12kC/O, H/P Models 18kC/O Models 18kH/P, 24kC/O, H/P Components Location Outdoor9k, 12k Outdoor18k, 24k 6871A20681 6871A20680Product Specifications Cooling OnlyCooling & Heating LS090HE LS120HE LS180HE LS240HEExploded View Outdoor Unit 9k, 12k Btu/h Seriess 435512 Outdoor Unit 18kH/P, 24k Seriess W0CZZ-2Replacement Parts List Parts List IndoorLSN180CE Parts List Outdoor LSU120HEReplacement Parts List LSU240HE No A20462V
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Manual 83 pages 52.83 Kb