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LG LMCN078HV - User Manual

LG LMCN078HV
51 pages
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CEILING CASSETTE
INDOOR UNIT
INSTALLATION MANUAL
MAX
MULTI
F
MULTI
F
LCN188HV4 18 kBtu LMCN078HV 7 kBtu
LCN098HV4 9 kBtu
LCN128HV4 12 kBt

Questions and Answers

  • M
    Michael RoseAug 9, 2025
    What to do if my LG LMCN078HV shows a communication error between indoor and outdoor units?
    • C
      Craig OsborneAug 10, 2025
      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.
  • A
    Angela OlsonAug 17, 2025
    What to do if my LG LMCN078HV displays an indoor unit BLDC motor fan lock error?
    • J
      Jennifer KirbyAug 17, 2025
      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.
  • K
    kellygeorgeAug 25, 2025
    What to do if my LG LMCN078HV Air Conditioner is showing an indoor unit middle pipe sensor error?
    • E
      Emily CastilloAug 25, 2025
      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.
  • K
    Kirsten MacdonaldSep 1, 2025
    What to do if my LG LMCN078HV Air Conditioner displays an indoor unit EEPROM error?
    • J
      Julia GarciaSep 1, 2025
      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.

Summary

Safety Instructions

Wiring

Operation

Installation

Indoor Unit Location Selection

Guidelines for choosing an optimal and safe installation location.

Indoor Unit Connections

Steps for connecting refrigerant pipes and electrical wiring to the indoor unit.

Flaring Procedure

Detailed steps and best practices for performing flared refrigerant connections.

Outdoor Unit to Indoor Unit Connections

Guidance on connecting outdoor units to indoor units and branch distribution units.

General Installation Guidelines

Install the Condensate Drain Pipe

Instructions for properly installing the condensate drain piping system.

Refrigerant Piping

Guidelines and requirements for refrigerant piping installation and insulation.

Insulating Refrigerant Piping

Specifications for EPDM insulation wall thickness based on location type.

Wiring

Wiring General Guidelines

Key safety and best practices for performing electrical wiring.

Power Wiring; Communication Cable Connections

Step-by-step guide for connecting power and communication cables.

Final Installation Procedures

Troubleshooting

Error Codes

Explanation of error codes displayed by the unit for diagnosis.

Error Codes - Continued

Further details on error codes and their corresponding troubleshooting steps.

LG LMCN078HV Specifications

General IconGeneral
Cooling Capacity78000 BTU/h
RefrigerantR410A
HSPF10.0
Power Supply208-230V
Phase1
TypeMulti-Split Air Conditioner

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