LG Electronics AS-W096URH1/UBH1/UWH1/UMH1, AS-W126URH1/UBH1/UWH1/UMH1 service manual Functions

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Functions

Functions

Indoor Unit

Operation ON/OFF by Remote controller

Sensing the Room Temperature

•Room temperature sensor. (Thermistor)

•Pipe temperature sensor. (Thermistor)

Room temperature control

• Maintain the room temperature in accordance with the Setting Temp.

Starting the Current Control

• Indoor fan is delayed for 5 sec at the starting.

Time Delay Safety Control

•Restarting is for approx. 2 minutes.

Indoor Fan Speed Control

•Super High, High, Med, Low

Operation indication Lamps (LED)

--- Lights up in operation

--- Lights up in Sleep Mode

--- Lights up in Timer Mode

--- Lights up in Preheat Mode (for Heating Model) PLASMA --- Lights up in Plasma Air Clean Mode

Soft Dry Operation Mode

• Intermittent Operation of fan at low speed or off.

Sleep Mode Auto Control

•The fan is switched to low(Cooling), low(Heating) speed.

•The unit will be stopped after 1, 2, 3, 4, 5, 6, 7 hours.

Natural Air Control by CHAOS Logic

•The fan is switched to intermittent or irregular operation

•The fan speed is automatically switched from high to low speed.

Airflow Direction Control

•The louver can be set at the desired position or swing up and down automatically.

Auto Changeover

Energy-Saving control(Optional)

Horizontal airflow Direction Control(Optional)

AUTO CLEAN(Optional)

PLASMA

•The function will be operated while in any operation mode with selecting the function.

•The function is to be stopped while it is operating with selecting the function.

Defrost(Deice) control (Heating)

•Both the indoor and outdoor fan stops during defrosting.

Hot-start Control (Heating)

•The indoor fan stops until the evaporator pipe temperature will be reached at 34°C.

Heater (Optional)

30Room Air Conditioner

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Contents LG Room Air Conditioner Table of Contents LG Model Name 2002Code Type Code of Model Meaning 2003~2005 MeaningSafety Precautions InstallationThere is risk of fire, electric shock, explosion, or injury Operation ThinnerKeep level even when installing the product Be cautious that water could not enter the productOperation Indoor Unit DimensionsSymbols Used in this Manual 9k, 12k Btu SeriesOutdoor Unit Product Specifications AS-W096U0 AS-W126U0 AS-W096U1 AS-W126U1Indoor unit InstallationSelect the best Location Outdoor unitFixing Installation Plate Oil trap should be installed every 5~7 metersPiping Length and Elevation Drill a Hole in the Wall Flaring WorkIndoor Connecting the PipingCheck Foamed polyethylene or equivalent is recom- mendedWrap the insulation material around the connecting portion For left rear piping Indoor unit installation For left piping. Follow the instruction below Good case Bad caseOutdoor Outdoor unitConnecting the Cables Circuit Grade Breaker Checking the Drainage To check the drainageDrain piping Forming the Piping Air Purging Air purgingAir purging with vacuum pump Soap water method EvacuationFinishing the job Settlement of outdoor unit Prepare remote controllerTest Running Evaluation of the performancePump Down Procedure Pump DownFunctions Overheatng. ProtectionPower module Power relay controlActive power filter controlPSC Stand by control at low tempHigh39C Low11C Cancel Sleep Mode, Timer on or Timer OFF3, 4, 5, 6 Off Timer Cooling Down to 18C Heating Down to 16C Up to 30COperation LED display of indoor unitLG Brand/OEM Brand Protection of the evaporator pipe from frosting Control methodCooling mode operation Model Comp. Operating frequencyHealthy Dehumidification mode operation Intake air Temp Setting TempHeating mode operation Operating freq. step of compTemp. differences Comp. Operating frequency Fuzzy operation for cooling Fuzzy mode operationOptionalsIntake air temp Setting temp Fan speed At beginningFuzzy operation for Heating Fuzzy operation for dehumidificationSwing mode Jet cool mode operationJet heat mode operation Chaos swing modeSleep timer operation Sleep timer operation for cooling cycleSleep timer operation for heating cycle Forced operation Indoor temp Operating Mode Setting tempAuto restarting operation Trial OperationProtection from total current control Protection from DC Peak CurrentPortection from overheating of power module Portection from overheating of compressorDefrosting control AS-W096/126U0 SeriesAS-W096/126U1 Series Auto Cleaning Auto ChangeoverOptionalLow Ambient Disassembly To remove the Grille from the ChassisTo remove the Control Box To remove the Discharge GrilleTo remove the Evaporator To remove the Motor Cover To remove the Cross-Flow FanSchematic Diagram Electric Control DeviceIndoorAS-W096U 0, AS-W126U 0 Series OutdoorAS-W096Series, AS-W126Series Wiring Diagram Indoor Unit AS-W096/126U0,1 SeriesOutdoor Unit AS-W096U0 Series AS-W126U0 SeriesIndoor Main P.W.B Assembly DC Part Components LocationDisplay ASSEMBLYAS-W096/126U0,1 Series Outdoor Main P.W.B Assembly AS-W096/126U0 Series Model Capillary Tube Troubleshooting GuideRefrigeration Cycle Diagram Model Adopted Electrion Expansion ValveOil trap should be installed per 5~7 meters Pipe Length and the ElevationOutdoor unit Indoor unit Way, 3-way Valve Way Valve Liquid SideCheck for gas leakage ProcedureAir purging Purge the air from the systemPumping Down Air purging of the charge hoseSet the 2-way valve to the closed position Re-air Purging Re-installationMount the valve stem nuts and the service port nut Air purgingBalance Refrigerant of the 3-way Valve Gas leakageEvacuation All amount of refrigerant leakedConnect the charge hose to the charging cylinder Gas ChargingAfter Evacuation Purge the air from the charge hoseCycle Parts Trouble analysisSelf-diagnosis function Precaution in Service or Check Diagnosis ProcedureProcedure Specification Remedy Electronic PartsProduct doesnt operate with the remote controller Compressor/Outdoor Fan are unable to drive Check Point Comp. on Comp. OFFWhen indoor Fan does not operate Trouble 5 When the horizontal louver does not operate Heater does not operate at all Outdoor Unit does not operate at all Indoor OutdoorTrouble 8-1When compressor does not operate normally DC Peak ErrorError Code ➅Trouble 8-2When compressor does not oprate normally Communication error between Indoor and Outdoor Error Code ➄Trouble 8-3When compressor does not oprate normally CT Error Error Code ➆Connectors Condition Problem error mode Problem of missing the connector Indoor Main PCB AssyProblem of missing the connector Outdoor Main PCB Assy CN-T/BlockExploded View Indoor UnitOutdoor Unit Replacement Parts List DescriptionPanel ASSY, Front SUB No A20061Z October