LG Electronics LA090HPO, LA120HPO, LA120CPO, LA120HPI, LA120CPI service manual Operation, Functions

Page 36

Operation

Operation

Functions

Indoor Unit

Operation ON/OFF by Remote controller

Sensing the Room Temperature

•Room temperature sensor (THERMISTOR)

Room temperature control

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

Starting Current Control

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

Time Delay Safety Control

•Restarting is inhibited for approx. 3 minutes.

Indoor Fan Speed Control

• High, Med, Low and Auto

Operation indication Lamps (LED)

--- Lights up in operation

Healthy Dehumidification Mode

• Intermittent operation of fan at low speed

Sleep Mode Auto Control

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

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

Auto Air Control by the unit electronic control

•The fan is switched to intermittent or irregular operation.

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

Chaos Swing

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

Defrost control(Heating)

•Both the indoor and outdoor fan stops during defrosting.

•Hot start will be operated after defrosting ends.

Hot-start Control (Heating)

•The indoor fan stops until the indoor pipe temperature will be reached at 82°F(28°C).

36Room Air Conditioner

Image 36

Contents Room Air Conditioner Table of Contents Safety Precautions InstallationDo not use damaged power cords, plugs, or a loose socket Install the panel and the coverDo not install the product on a defective installation stand OperationWhen flammable gas leaks, turn Do not place a heater or otherDo not use the product in a tight Sounds, odors, or smoke comesKeep level even when installing That water is drained away propProduct when removing Do not use the product for speCial purposes, such as preserv Ing foods, works of art, etc. It is aDisuse Outlet while the air conditioner isIt is not sanitary and could cause Dimensions Symbols Used in this ManualIndoor Unit Outdoor Unit 9k, 12k ModelsProduct Specifications ModelsInstallation Installation PartsInstallation Tools Installation Map Confirm The Refrigerant This Product Contains R-410A RefrigerantRooftop Installations Select the best LocationIndoor unit Outdoor unitOil trap should be installed every 16.4~23feets 5~7 meters Piping Length and ElevationPreparing Work for Installation Open panel frontCover pipe and cover side remove Drain hose junctionPipe and the wire. Refer to installation Fixing Indoor UnitCase of nothing wrong, connect Flaring work and connection of piping Flaring WorkConnecting the Piping CheckIndoor Foamed polyethylene or equivalent is recommendedWrap the insulation material around the connecting portion Indoor unit tubing Flare nut PipingsFor right piping. Follow the instruction below Good case Bad caseConnection of Piping -Outdoor Connecting the Cables Connection method of the connecting cableExample How to connect wiring to the terminalsConnecting the cable between indoor unit and outdoor unit 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 Charging Panel Front Assembly Prepare remote controller Test RunningSettlement of outdoor unit Evaluation of the performancePump Down Procedure Pump DownHow to replace picture & photograph Operation FunctionsTime delay Safety Control Chaos Swing ModeCooling Operation Mode Function of main controlAuto Operation Electronic control mode Auto Operation for CoolingHealthy Dehumidification Auto Operation for Dehumidificationonly Heating ModelAuto Operation for Heatingonly Heating Model Heating Operation Modeonly Heating Model Hot-Start ControlCooling or Heating Mode with Sleep Mode Auto Control Cooling Mode with the Sleep ModeHeating Mode with the Sleep Modeonly Heating Model Auto restart Forced OperationCooling Heat pump Model Test operationSignal Receptor Display FunctionSelf-diagnosis Function Operation Indication LampsRemote Control Operations ControlsNd F Button Disassembly To remove the Grille from the ChassisTo remove the Control Box To remove the Evaporator. Remove hole tubing holde Before removing the Turbo FanTo remove the Motor Schematic Diagram Heat Pump/Cooling Only SeriesIndoor UnitHeat Pump Series/ Cooling Only Series Outdoor Unit Indoor Unit P.W.B. Assembly No A20999A PCB ASSEMBLY, Main Top View Bottom ViewOutdoor Unit P.W.B. Assembly No A20901C PCB ASSEMBLY, Main Top View Bottom ViewNo A20921A PCB Assembly Display P.W.B. ASMWiring Diagram Outdoor UnitCooling Only Models, & Heating Models Troubleshooting Guide Refrigeration Cycle DiagramPiping Length and Elevation Procedure Way ValvePumping Down Air purging of the charge hoseRe-air purging Balance refrigerant of the 3-way valve Gas leakageEvacuation All amount of refrigerant leakedGas Charging After EvacuationConnect the charge hose to the charging cylinder Purge the air from the charge hoseMethod of using graph Method of using equationAccording to Indoor & Outdoor Temperature Additional gas chargingCycle Parts Trouble analysisElectronic Parts 9k model Product does not operate at allProduct is not operate with the remote controller Compressor/Outdoor Fan are unable to drive 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 Voltage of Connectors according to Indoor Fan Speed RY-COMP-BExploded View Indoor UnitOutdoor Unit Replacement Parts List Parts ListIndoorParts ListOutdoor December No A20926C