LG Electronics A3UH363FA0(LMU360HE) service manual Function of control, Cooling Mode Operation

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Operation

Operation

Functionofcontrol

1. MAIN UNIT FUNCTION

• DISPLAY

Operation Indicator

•On while in appliance operation, off while in appliance pause

•Flashing while in disconnection or short in Thermistor (3 sec off / 0.5 sec on)

Sleep Timer Indicator

• On while in sleep timer mode, off when sleep timer cancel or appliance operation pause

Timer Indicator

• On while in timer mode (on/off), off when timer mode is completed or canceled

Defrost Indicator

•Off except when hot start during heating mode operation or while in defrost control

■Cooling Mode Operation

•When the intake air temperature reaches 0.5°C(32.9°F) below the setting temp, the compressor and the outdoor fan stop.

•When it reaches 0.5°C(32.9°F) above the setting temp, they start to operate again.

Compressor ON Temp

➲ Setting Temp+0.5°C(32.9°F)

Compressor OFF Temp

➲ Setting Temp-0.5°C(31.1°F)

•While in compressor running, operating with the airflow speed set by the remote control. While compressor is off fan operates at low speed regardless of the setting.

■Soft Dry Operation Mode

•When the dehumidification operation input by the remote control is received, the intake air temperature is detected and the setting temp is automatically set according to the intake air temperature.

26°C(78.8°F) ≤

Intake Air Temp

➲ 25°C(77°F)

24°C(75.2°F) ≤

Intake Intake Air Temp<26°C(78.8°F)

➲ Intake Air Temp-1°C(30.2°F)

18°C(64.4°F) ≤

Intake Intake Air Temp<24°C(75.2°F)

➲ Intake Air Temp-0.5°C(31.1°F)

Intake Air Temp<18°C(64.4°F)

➲ 18°C(64.4°F)

•While compressor off, the indoor fan repeats low airflow speed and stop.

•While the intake air temp is between compressor on temp. and compressor off temp., 10-min dehumidification operation and 4-min compressor off repeat.

Compressor ON Temp. ➲ Setting Temp+0.5°C(32.9°F) Compressor OFF Temp. ➲ Setting Temp-0.5°C(31.1°F)

•In 10-min dehumidification operation, the indoor fan operates with the low airflow speed.

■Heating Mode Operation

•When the intake air temp reaches +3°(37.4°F)… above the setting temp, the compressor is turned off. When below the setting temp, the compressor is turned on.

Compressor ON Temp. ➲ Setting Temp. Compressor OFF Temp. ➲ Setting Temp.+3°C(37.4°F)

•While compressor on, the indoor fan is off when the indoor pipe temp. is below 20°C(68°F), when above 27°C(80.6°F) , it operates with the low or setting speed. When the indoor pipe temp is between 20°C(68°F) and

40Multi type Air Conditioner

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Contents Indoor Unit Room Type Art Cool Type Outdoor Unit A3UH363FA0LMU360HE A3UC363FA0LMU360CETable of Contents Indoor Unit Model Number NomenclatureOutdoor Unit Symbols Used in this Manual Combination tableSafety Precautions InstallationBe sure not to do Be sure to follow the instruction Control box securely Cuit and breakerDo not place anything on the power cable Be cautious when unpackingBe sure the installation area does not deteriorate with age OperationNect the power supply cable Do not allow water to run into electric partsSmoke comes from product Hurricane arrivesWhen the product is soaked Install the drain hose to ensure that Keep level even whenInstalling the product Not enter the productOperational Air flowVents, etc Not use harsh detergents, solLy. Clean the filter every two When cleaning or maintainingDo not step on or put anyting on the product. outdoor units Do not drink the water drained from the productIndoor Unit DimensionsSplit Type Indoor Outdoor Unit Product Specifications Indoor UnitOutdoor Unit Multiple piping models Model A3UC363FA0LMU360CE A3UH363FA0LMU360HEInstallation Parts InstallationInstallation Tools Select the best location Rooftop InstallationsOutdoor unit Piping length and elevation Multi Piping TypeFixing Installation PlateStandard Type Preparing work for Installation Artcool Type Only Open panel frontRemove cover pipe and cover side Drain hose junctionSticking the installation guide map and fixing Indoor unit Put an Installation Guide Map on the desired surfaceDrill a hole in the wall Drive the fore plastic anchors into drilled pointsFlaring Work and Connection of Piping Flaring workCheck Connecting the PipingIndoor Wrap the insulation material around the connecting por- tion For left rear piping Plastic bands Insulation material Connection Indoor Panel AssemblyArt Cool Type only Drive two screwsGood case Bad caseRemote Control Preparationoptional Outdoor Outdoor unitConnecting the Cable between Indoor Unit and Outdoor Unit Connect the cable to the Indoor unitConnect the cable to the Outdoor unit Outdoor unitConnection method of the connecting cableExample How to connect wiring to the terminalsConnect the cable to the indoor unit To check the drainage Checking the drainageDrain piping Forming the piping Air Purging and Evacuation Checking methodPreparation Leakage testEvacuation Repeat evacuation procedure for each indoor unitFinishing the job Charging AdditionalTest Running Split, Art Cool TypeCooling Mode Operation Soft Dry Operation ModeHeating Mode Operation OperationFuzzy Operation Defrost ControlHeatingFuzzy Operation for Cooling On-Timer Operation Off-Timer OperationAirflow Speed Selection Fuzzy Operation for DehumidificationOff-Timer = On-Timer Operation Sleep Timer OperationChaos Swing Mode Chaos Natural Wind ModeForced Operation Buzzer Sounding OperationFunction of Indoor Unit Split Type Indoor UnitIndicator Art Cool Type Indoor UnitOperation DefrostDeice control HeatingFunction of Outdoor Unit Cooling Model , Heat Pump Model Remote Control Operation15 2nd F Button Disassembly To remove the Grille from the ChassisTo remove the Control Box To remove the Motor Cover To remove the Control Box Before removing the Turbo Fan To remove the EvaporatorTo remove the Motor Electronic Control Device Schematic DiagramSplit Type Outdoor Outdoor Unit Schematic Diagram Wiring Diagram Art Cool Type Indoor UnitComponents Locations Bottom ViewArt Cool Type Schematic Diagram Component side Solder side Troubleshooting Guide Refrigeration Cycle DiagramA3UH363FA0LMU360HE A3UC363FA0LMU360CEIndoor Error Outdoor ErrorError Indicator Self-diagnosis FunctionCycle Troubleshooting Guide Trouble analysisElectronic Parts Troubleshooting Guide Procedure Specification RemedyProduct doesnt operate with the remote controller Compressor/Outdoor Fan are dont operate Check Point Comp. on Comp. OFFTrouble 4 When indoor Fan does not operate NectorTroubleshooting Guide Error Code Check PointIndoor air sensor Indoor inlet pipe sensorPower input AC 230V.Outdoor, Indoor Communication line is shorted at GNDError Title Cause of error Check point & Normal condition Title Cause of error Check point & Normal condition Outdoor air sensorCondensor pipe sensor Pipe sensorWay, 3-way Valve Way Valve Liguid SideProcedure Pumping downAir purging of the charge hose Set the liquid side valve to the closed positionEvacuation Mount the valve caps and the service port capsAll amount of refrigerant leaked Mount the valve stem nuts and the service port nut Gas ChargingAfter Evacuation Connect the gauge to the charging cylinderExploded View & Replacement Parts List S4, SE chassisS4 chassis SE chassis Parts List S4, SE chassisLMN090HE SP3 Chassis Art Cool Type Parts List SP3 chassis Filter ASSEMBLY,AIR CleanerA3UC363FA0LMU360CE Parts List A3UH363FA0LMU360HE, A3UC363FA0LMU360CE CodeMay No A20474C

A3UH363FA0(LMU360HE), AMNC123DEA0(LMN120CE), AMNC093D4A0(LMN090CE), AMNH123DEA0(LMN120HE), A3UC363FA0(LMU360CE) specifications

LG Electronics is renowned for its innovation in the home appliance sector, particularly in air conditioning systems. Among its diverse range, the AMNC123APM0, A3UC363FA0, AMNH123DEA0, AMNC093D4A0, and AMNC123DEA0 model series stand out for their advanced features and energy efficiency.

The AMNC123APM0, also referred to as LMAN120CNS, offers a powerful air conditioning solution ideal for medium to large spaces. Featuring a sleek design, it combines aesthetics with functionality. This model utilizes LG's inverter technology, which helps maintain a consistent temperature while significantly reducing energy consumption. Additionally, it comes equipped with a dual inverter compressor that operates quietly, making it perfect for residential settings.

The A3UC363FA0, or LMU360CE, is another standout model that caters to the installation needs of multi-zone systems. Its flexibility allows users to connect multiple indoor units, ensuring efficient air distribution across different spaces. This model also features advanced filtration systems that improve indoor air quality by reducing allergens and other harmful particles.

AMNH123DEA0, branded as LMN120HE, introduces enhanced energy efficiency through its intelligent energy management systems. This unit is designed with user-friendly controls and smart technology to optimize performance based on user preferences. Its compact design makes it suitable for smaller spaces while still delivering powerful cooling and heating functions.

The AMNC093D4A0, known as LMN090CE, is perfect for residential applications where space is a consideration. It boasts a high SEER (Seasonal Energy Efficiency Ratio) rating, indicating low energy consumption while still providing optimal cooling. The model is equipped with a variety of operational modes, including dehumidification and fan-only options.

Finally, the AMNC123DEA0, or LMN120CE, rounds out this impressive series by offering versatile installation options and silent operation. This model is particularly noted for its robust cooling capabilities and ease of maintenance, ensuring that homeowners can enjoy year-round comfort with minimal disruption.

In summary, LG Electronics has blended efficiency, performance, and design in its latest air conditioning models. With features like inverter technology, multi-zone capabilities, advanced filtration, and quiet operation, these systems cater to modern home cooling and heating requirements while promoting energy conservation. As such, they represent a significant leap in HVAC technology, providing reliable comfort and improved indoor air quality.
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