What to do if my LG MULTI F shows a communication error between indoor and outdoor units?
If your LG Air Conditioner displays a communication error between the indoor and outdoor units, power down the unit and boot it up again. If the problem persists, it is recommended to refer to an LG trained service provider for assistance.
What to do if my LG MULTI F Air Conditioner displays an indoor unit BLDC motor fan lock error?
If you see an indoor unit BLDC motor fan lock error on your LG Air Conditioner, try powering the unit down and then back up. If this does not resolve the issue, consult with an LG trained service provider.
What to do if my LG Air Conditioner is showing an indoor unit middle pipe sensor error?
If your LG Air Conditioner displays an indoor unit middle pipe sensor error, power cycle the unit. If the issue remains, it's recommended to seek assistance from an LG trained service provider.
What to do if my LG MULTI F Air Conditioner displays an indoor unit EEPROM error?
If your LG Air Conditioner shows an indoor unit EEPROM error, attempt to resolve it by powering down and then booting up the unit. If the error persists, it is recommended to refer to an LG trained service provider.
General| Inverter Technology | Yes |
|---|---|
| Power Supply | 220-240V, 50Hz |
| Type | Multi Split |
| Refrigerant | R410A |
| Energy Efficiency Class (Cooling) | A++ to A+++ (depending on the model) |
| Energy Efficiency Class (Heating) | A++ |
| Indoor Unit Compatibility | Multiple (Ceiling Cassette, Wall Mount, etc.) |
| Operating Temperature Range (Heating) | -15°C to 24°C |
| Control | Remote Control, Wi-Fi |
| Seasonal Energy Efficiency Ratio (SEER) | Up to 8.5 (depending on the model) |
| Compressor Type | Inverter Compressor |
| Operating Temperature (Cooling) | 5°C to 43°C |
| Operating Temperature (Heating) | -15°C to 24°C |
| Noise Level (Indoor) | 19-45 dB(A) (depending on the model and indoor unit type) |
| Dimensions (Indoor Unit) | Varies by model |
| Dimensions (Outdoor Unit) | Varies by model |
| Weight (Indoor Unit) | Varies by model |
| Weight (Outdoor Unit) | Varies by model |
| Features | Smart Diagnosis |
Defines symbols used for safety warnings, indicating hazards and actions to avoid.
Covers general safety warnings for installing the unit, including electrical hazards and proper handling.
Provides critical safety instructions for electrical wiring, connections, and grounding.
Outlines safety precautions related to operating the unit, including avoiding water and handling moving parts.
Explains the coding system for identifying Multi-Zone indoor and outdoor units.
Details the nomenclature for Branch Distribution Units, including type and port connections.
Provides detailed specifications for Multi F outdoor units, including capacity, operating range, and dimensions.
Lists electrical specifications for Multi F outdoor units, including voltage, MCA, and MOP.
Presents general data for Multi F MAX outdoor units, covering capacities and electrical requirements.
Details electrical specifications for Multi F MAX outdoor units, including fan and motor data.
Provides general data for Branch Distribution Units, including capacity and piping connections.
Instructions for safely transporting and lifting the outdoor unit, emphasizing weight and rigging.
Guidelines for choosing an optimal location for the outdoor unit, considering airflow and safety.
Specific considerations for installing outdoor units on rooftops, including leveling and anchoring.
Precautions for installing units in corrosive seaside environments, including windbreakers.
Instructions for securing units against wind/earthquakes and protecting them from lightning.
Specifies required clearances around the outdoor unit for airflow and service access.
Guidance on installing outdoor units in indoor spaces, outlining benefits and design considerations.
Recommendations for selecting and designing louvers for outdoor unit enclosures to ensure proper airflow.
General specifications and procedures for securely mounting and anchoring outdoor units.
Details on the concrete foundation requirements for outdoor unit mounting.
Instructions on how to properly anchor the outdoor unit to its mounting platform.
Information on LG's LATS software for designing and validating refrigerant piping systems.
Guidelines for refrigerant safety and maximum allowable concentrations in occupied spaces.
Specifies limitations on the number and capacity of indoor units that can be connected.
Details the maximum allowable piping lengths and elevation differences for Multi F systems.
Specifies piping length and elevation limits for Multi F MAX systems with branch distribution units.
Guidance on using field-supplied elbows, Y-branches, and branch distribution units.
Information on selecting and using appropriate ACR copper tubing for LG Multi F systems.
An example calculation for linear pipe expansion based on temperature change.
Details on calculating anticipated linear expansion for vapor lines.
Information on the minimal change in length for liquid lines due to temperature.
Instructions for storing refrigerant pipes properly to prevent contamination.
Emphasizes using only specified pipe sizes to prevent system malfunction.
Prohibits after-market accessories like oil traps or solenoid valves in the refrigerant piping.
Discusses considerations for installing isolation valves, including pressure drops.
Guidance on using field-supplied long radius elbows and accounting for pressure loss.
Recommendations for using long radius bends when bending soft copper.
Instructions for properly supporting refrigerant pipes to prevent sagging and oil traps.
Step-by-step guide for performing correct flare connections for refrigerant piping.
Provides dimensions and torque specifications for flared connections.
Instructions for performing brazing procedures, emphasizing safety and material compatibility.
Details on connecting piping between Multi F outdoor and indoor units.
Procedure for connecting field-supplied piping to the outdoor unit service ports.
Instructions for properly tightening flare nuts using torque specifications.
Guidance on installing connection sockets for indoor units when piping.
Describes the four possible piping installation directions for Multi F MAX outdoor units.
Provides connection types and tables for Multi F MAX outdoor units.
Instructions for connecting refrigerant pipes from branch distribution units to indoor units.
Instructions for bundling refrigerant pipes, drain hose, and cables with vinyl tape.
Guidance for specific installation scenarios like outdoor units below or above indoor units.
Requirements for condensate drain piping construction and material.
Procedure for performing a leak test on the drainage system 24 hours after installation.
Guidelines for correctly insulating all refrigerant piping, Y-branches, and valves.
Table detailing minimum EPDM insulation wall thickness based on location and pipe classification.
Instructions for applying insulation material to refrigerant piping and ensuring proper fit.
Steps for insulating joints and connections to prevent air gaps and ensure proper fit.
Guidance on applying the included insulation jackets for Y-branch fittings.
General guidelines for electrical wiring, emphasizing safety and compliance with codes.
Instructions for accessing the outdoor unit for power and communications cable connections.
Details on specifications for power and communication cables, including gauge and insulation.
Best practices for terminating power wiring at the power terminal block.
Checks to perform before starting the test run, ensuring proper connections and valve positions.
Instructions for inserting batteries into the remote controller for operation.
Steps for operating the system and evaluating its performance during a test run.
Explains how to set DIP switches for various optional modes and functions.
Procedure for enabling forced cooling operation, typically for adding refrigerant in winter.
Procedure to verify proper wiring installation using LEDs on the outdoor unit PCB.
Enables efficient operation by lowering maximum power consumption, reducing MCA.
Combines power saving with mode lock for applications requiring a specific mode.
Lowers operation sound by adjusting compressor frequency and fan speeds.
Combines Night Quiet Mode with Mode Lock to reduce sound and fix operation mode.
Prevents mixed mode operation by locking the system into cooling or heating.
Instructions for checking cycle data using the TACT-SW1 on the PCB.
Guidance on interpreting and troubleshooting error codes displayed on units and software.
Explains how to read error codes from indoor unit LEDs based on blink patterns.
Defines terms like MICOM and EPROM used in error code reporting.
A table listing common error codes for indoor units and their operation status.
A table listing common error codes for outdoor units and their LED blink patterns.
Details the real-time data displayed by LGMV software, including compressor and fan speeds.
Describes additional screens available in LGMV, including Cycleview, Graph, Control FTN, and Useful Tab.
Overview of SIMS capability for monitoring and troubleshooting LG Duct Free Systems.
Description of the main screen and how to access current readings and operational info.
Details on various SIMs app screens like Outdoor Info, Indoor Info, and Graph Info.
Checklist items for the initial installation of major components.
Checklist items for piping material, installation, and insulation.
Checklist items for proper brazing techniques and materials.
Checklist items related to refrigerant piping design, material handling, and installation.
Checklist items for correct installation and connection of condensate drain systems.
Checklist items for proper installation of power wiring and communication cables.
Table showing factory refrigerant charge for Multi F outdoor units.
Formula to calculate additional refrigerant needed based on piping length.
Specifications for Multi F outdoor unit piping, including lengths and additional charge.
Worksheet to calculate the total additional refrigerant charge required for the system.
Table showing factory refrigerant charge for Multi F MAX outdoor units.
Specifications for Multi F MAX outdoor unit piping, including lengths and additional charge.
Worksheet to calculate the total additional refrigerant charge required for Multi F MAX systems.
Defines symbols used for safety warnings, indicating hazards and actions to avoid.
Covers general safety warnings for installing the unit, including electrical hazards and proper handling.
Provides critical safety instructions for electrical wiring, connections, and grounding.
Outlines safety precautions related to operating the unit, including avoiding water and handling moving parts.
Provides detailed specifications for Multi F outdoor units, including capacity, operating range, and dimensions.
Presents general data for Multi F MAX outdoor units, covering capacities and electrical requirements.
Provides general data for Multi F MAX Branch Distribution Units, including capacity and piping.
Details specifications for Multi F Multi Zone Ceiling Cassette Indoor Units, including capacity and dimensions.
Lists electrical specifications for Multi F outdoor units, including voltage, MCA, and MOP.
Details electrical specifications for Multi F MAX outdoor units, including fan and motor data.
Guidelines for selecting an optimal location for the outdoor unit, considering hazards and conditions.
Precautions for installing units in corrosive seaside environments, including windbreakers.
Specific considerations for installing outdoor units on rooftops, including leveling and anchoring.
Measures for operating the unit in snowy or cold conditions, including raised platforms.
Instructions for securing units against wind/earthquakes and protecting them from lightning.
Specifies required clearances around the outdoor unit for airflow and service access.
Provides diagrams and measurements for required clearances with various obstacles.
Guidance on safely rigging and lifting outdoor units and preparing mounting platforms.
Details on the concrete foundation requirements for outdoor unit mounting.
Instructions on how to properly anchor the outdoor unit to its mounting platform.
Specifies requirements for outdoor unit foundations, including bolt type and depth.
Instructions for securely bolting the outdoor unit to its platform, including H-beam support.
Guidance for selecting the best indoor location for Multi F MAX branch distribution units.
Details acceptable orientations for installing branch distribution units for proper valve seating.
Instructions for mounting branch distribution units to a wall using hangers.
Steps for preparing refrigerant piping, including cutting, deburring, and flaring.
Step-by-step guide for performing correct flare connections for refrigerant piping.
Instructions for connecting pipes to the outdoor unit, emphasizing brazing and leak testing.
Guidance on insulating drain piping and general refrigerant piping.
How to route refrigerant piping around obstacles like beams or concrete structures.
Specifies the allowable slope for horizontal refrigerant piping.
Prohibits after-market accessories like oil traps or solenoid valves in the refrigerant piping.
Emphasizes using only specified pipe sizes to prevent system malfunction.
Explains how to calculate and accommodate pipe expansion due to temperature changes.
Details the maximum allowable piping lengths and elevation differences for Multi F systems.
Specifies limitations on the number and capacity of indoor units that can be connected.
Guidance on using field-supplied elbows, Y-branches, and branch distribution units.
Specifies piping length and elevation limits for Multi F MAX systems with branch distribution units.
Example illustrating piping for a Multi F MAX system with one branch distribution unit.
Example illustrating piping for a Multi F MAX system with two branch distribution units.
Details on connecting piping between Multi F outdoor and indoor units.
Guidance on installing connection sockets for indoor units when piping.
Provides connection types and tables for Multi F MAX outdoor units.
Instructions for connecting refrigerant pipes from branch distribution units to indoor units.
Requirements for condensate drain piping construction and material.
Method for cleaning refrigerant piping using pressurized nitrogen gas.
Steps for checking leaks and evacuating the system to remove non-condensibles.
Checks to perform before starting the leak test, ensuring proper connections.
Instructions for connecting the manifold valve and nitrogen gas cylinder for leak testing.
Procedure for pressurizing the system with nitrogen and testing for leaks.
Key adherence points for successful leak testing, including pressure levels and time.
Steps for performing vacuum drying on the refrigerant piping and indoor units.
Determining and adding the correct refrigerant charge based on piping length and formulas.
Guidelines for correctly insulating all refrigerant piping, Y-branches, and valves.
Requirements for pipe sleeves used at wall, floor, and underground penetrations.
Instructions for routing underground refrigerant piping within protective sleeves.
Instructions for applying insulation material to refrigerant piping and ensuring proper fit.
Steps for insulating joints and connections to prevent air gaps and ensure proper fit.
Instructions for bundling refrigerant pipes, drain hose, and cables with vinyl tape.
Guidance for specific installation scenarios like outdoor units below or above indoor units.
Guidance on applying the included insulation jackets for Y-branch fittings.
General guidelines for electrical wiring, emphasizing safety and compliance with codes.
Details on power supply requirements and specifications for wiring.
Specifications for communication cables, including gauge and insulation requirements.
Best practices for terminating power wiring at the power terminal block.
Instructions for connecting power and communication cables to the outdoor unit.
Procedure for connecting cables between outdoor/BD units and indoor units for Multi F MAX.
Instructions for setting up multiple indoor units for group control, defining Master and Slave units.
Information on using LGMV software for system monitoring and troubleshooting.
Guides for interpreting error codes displayed on indoor and outdoor units.
Checklist items for the initial installation of major components.
Checklist items for piping material, installation, and insulation.
Checklist items for proper brazing techniques and materials.
Checklist items related to refrigerant piping design, material handling, and installation.
Checklist items for correct installation and connection of condensate drain systems.
Checklist items for proper installation of power wiring and communication cables.
Table showing factory refrigerant charge for Multi F outdoor units.
Formula to calculate additional refrigerant needed based on piping length.
Specifications for Multi F outdoor unit piping, including lengths and additional charge.
Worksheet to calculate the total additional refrigerant charge required for the system.
Table showing factory refrigerant charge for Multi F MAX outdoor units.
Specifications for Multi F MAX outdoor unit piping, including lengths and additional charge.
Worksheet to calculate the total additional refrigerant charge required for Multi F MAX systems.
General safety guidelines for installation, covering grounding and electrical precautions.
Safety precautions related to operating the unit, including avoiding water and sharp edges.
Guidelines for choosing the best location for indoor units, considering airflow and drainage.
Precautions for installing units in corrosive seaside environments, including windbreakers.
Measures for operating the unit in snowy or cold conditions, including raised platforms.
Details on maximum allowable piping lengths and elevation differences for Multi Piping systems.
Instructions for connecting piping and drain hose for Standard/Artcool Mirror type indoor units.
Instructions for connecting piping for Standard/Artcool Libero type indoor units.
Guidance on using heat insulation material for refrigerant piping with excellent heat resistance.
Measures to take in high humidity environments to prevent water drops and ensure proper operation.
Instructions for drain piping slope and connection for Standard/Libero/Artcool Mirror types.
Instructions for detaching tapes from the plasma filter.
Steps for mounting the installation plate on the wall, ensuring proper alignment.
Instructions for connecting the cable to the indoor unit control board.
Steps for mounting the remote controller setup board on the wall.
Instructions on setting up the remote controller cable in the upper direction.
Instructions on setting up the remote controller cable in the right direction.
Guidance on using heat insulation material for refrigerant piping with excellent heat resistance.
Measures to take in high humidity environments to prevent water drops and ensure proper operation.
Instructions for drain piping slope and connection for Standard/Libero/Artcool Mirror types.
Main cause of gas leakage is defect in flaring work. Carry out correct flaring work.
Instructions for completely removing all burrs from pipe ends after cutting.
Instructions for placing flare nuts on the pipe/tube after completing burr removal.
Instructions for carrying out flaring work using a flaring tool.
Procedure for inspecting the flared pipe end for defects.
Steps for connecting piping to the outdoor unit, including tightening flare nuts.
Ensures branch pipes are attached horizontally or vertically, with correct orientation.
Instructions for installing the main unit, covering ceiling-suspended and wall-mounted types.
Instructions for connecting wires to the indoor unit control board, matching colors and terminals.
Procedure for connecting cables to the branch distribution unit for Multi F MAX systems.
Instructions for connecting power and communication cables to the outdoor unit control board.
Detailed steps on connecting wires to terminals, including strand wiring and tightening.
Procedure to check drainage by spraying water and verifying for leaks.
Instructions for insulating piping and drain hoses, including securing and sealing.
Procedure for performing a leak test using nitrogen gas and soap solution.
Steps for vacuum drying the system to remove non-condensibles and moisture.
Note on when additional refrigerant charging is necessary based on total piping length.
Provides calculations for additional refrigerant charge based on piping length for multiple indoor units.
Instructions for inserting batteries into the remote controller.
Steps to evaluate system performance, check refrigerant charge, and temperatures.
Explains DIP switch settings for various functions and modes.
Procedure for enabling forced cooling operation, typically for adding refrigerant in winter.
Procedure to verify proper wiring installation using LEDs on the outdoor unit PCB.
Enables efficient operation by lowering maximum power consumption, reducing MCA.
Combines power saving with mode lock for applications requiring a specific mode.
Lowers operation sound by adjusting compressor frequency and fan speeds.
Combines Night Quiet Mode with Mode Lock to reduce sound and fix operation mode.
Prevents mixed mode operation by locking the system into cooling or heating.
To Next Page
