LG ARNU12GM1A4 User Manual (English)

Other manuals for LG ARNU12GM1A4

Questions and Answers:

K
katherine97Aug 4, 2025
How to fix an LG ARNU12GM1A4 that won't turn on?
- M
  Molly MahoneyAug 5, 2025
  If your LG Air Conditioner isn't working, first, ensure the power cord is properly plugged into the outlet and that power isolators are switched on. Check the circuit breaker and replace the fuse if it's blown. If a power failure occurred, turn off the appliance, wait 3 minutes after the power is restored, and then turn it back on. Also, verify that the batteries in the remote control are correctly inserted or replace them. Make sure that air inlet or outlet vents are not obstructed. Finally, confirm that the appliance wasn't turned off automatically by a timer and turn it on.
J
John BairdAug 9, 2025
Why is my LG ARNU12GM1A4 not blowing cold air?
- C
  Craig MullinsAug 9, 2025
  If your LG Air Conditioner is not emitting cool air, ensure that curtains, blinds, or furniture are not blocking the unit. Clean the air filter every 2 weeks. If the room temperature is too high, select Jet mode for faster cooling and allow the unit time to cool the room, especially when first turned on. Check that the desired temperature is lower than the current temperature and that no cold air is escaping through ventilation points. Avoid using heat generators nearby. If Fan mode is selected, switch to a cooling operation. The cooling effect may not be sufficient if the outside temperature is too high.
B
Bryan Garza Jr.Aug 13, 2025
Why does my LG ARNU12GM1A4 Air Conditioner keep turning off?
- E
  erin19Aug 13, 2025
  If your LG Air Conditioner stops during operation, the Off Timer function may have timed out; check the timer settings. If you made a mistake in timer operation, set the timer correctly. If a power failure occurred, wait for the power to return. With Auto Restart enabled, the appliance will resume operation a few minutes after power is restored.
S
Samantha WilsonAug 18, 2025
Why is my LG ARNU12GM1A4 remote control not working?
- M
  Ms. Sara DavisAug 18, 2025
  If the remote control display for your LG Air Conditioner is faint or not showing at all, replace the batteries with new ones. Ensure that the batteries are inserted with the correct + and - orientation.
M
Malik DonovanAug 21, 2025
Why can't I adjust the fan speed on my LG ARNU12GM1A4 Air Conditioner?
- T
  tlynchAug 21, 2025
  If the fan speed on your LG Air Conditioner cannot be adjusted, it might be because Jet mode or Auto Operation mode is selected. In these modes, fan speed adjustments are limited, so select a different operating mode. Also, the airflow may be automatically adjusted to prevent cool airflow during heating or to minimize energy consumption during cooling.
E
elijahwilliamsAug 27, 2025
Why is my LG ARNU12GM1A4 Air Conditioner not blowing hot air?
- C
  Casey CurryAug 27, 2025
  If your LG Air Conditioner isn't emitting warm air, and the vane is almost closed at the start of Heating mode, this is normal; wait for the appliance to generate enough warm air. If the outdoor unit is in Defrosting mode due to low outside temperatures, wait approximately 15 minutes for it to finish. Note that the heating effect may not be sufficient if the outside temperature is too low.
C
Christopher DayAug 30, 2025
Why does my LG ARNU12GM1A4 smell?
- A
  Andrew TaylorAug 30, 2025
  If your LG Air Conditioner's indoor unit smells, it may be due to absorbed odours like cigarette smoke being discharged with airflow. Try washing the filter. If the smell persists, contact a service center to clean the heat exchanger. Also, check for damp smells from walls, carpet, furniture, or cloth items, and clean them if necessary.

LG ARNU12GM1A4 Specifications

General

Brand	LG
Model	ARNU12GM1A4
Category	Air Conditioner
Language	English

Summary

Safety Instructions

Safety Messages and Warnings

Explains safety symbols (risk, warning, caution) and emphasizes following instructions to prevent injury or damage.

Flammable Refrigerant and Warning Precautions

Covers flammable refrigerant symbols, general warnings, and technical safety guidelines for appliance usage.

Installation and Grounding Safety

Details safety for installation by unauthorized persons, qualified technicians, and proper grounding/wiring practices.

Air Conditioner Operation

Operation Before Use and Energy Saving

Provides notes on initial operation, fan speed, ventilation, and suggestions for energy saving.

Product Overview - Ceiling Concealed Duct

Describes the components of the Ceiling Concealed Duct air conditioner, including air intake and outlet vents.

Remote Control Operation Guide

Step-by-step guide on how to access the product manual via the LG website for remote control operations.

Air Conditioner Maintenance

Cleaning Interval and Air Filter Care

Details the process and frequency for cleaning the air filter, including warnings about water temperature and cleaning agents.

Air Filter Cleaning Procedure

Provides a visual guide on how to remove, clean, and re-insert the air filter for Type 1 and Type 2 units.

Maintenance for Long Periods of Disuse

Instructions on preparing the unit for storage and checking its condition after periods of inactivity.

Troubleshooting and Service

Pre-Service Checks and Common Issues

Lists common operational issues and their possible causes/solutions to help users troubleshoot before contacting service.

Operation and Performance Problem Solving

Addresses problems like the unit stopping, not working, or incorrect air circulation, providing troubleshooting steps.

When to Contact Service Personnel

Lists specific situations requiring professional service, such as abnormal smells, damaged cords, or error codes.

Appendix - Installation Information

Outdoor Unit Installation Guidelines

Provides guidance on selecting a suitable location and ensuring proper clearances for outdoor unit installation.

Indoor Unit Installation Space Requirements

Details the conditions and requirements for selecting the best space for indoor unit installation, including load bearing and connectivity.

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LG ARNU12GM1A4 User Manual

Table of Contents

Other manuals for LG ARNU12GM1A4

Questions and Answers:

LG ARNU12GM1A4 Specifications

Summary

Safety Instructions

Safety Messages and Warnings

Flammable Refrigerant and Warning Precautions

Installation and Grounding Safety

Air Conditioner Operation

Operation Before Use and Energy Saving

Product Overview - Ceiling Concealed Duct

Remote Control Operation Guide

Air Conditioner Maintenance

Cleaning Interval and Air Filter Care

Air Filter Cleaning Procedure

Maintenance for Long Periods of Disuse

Troubleshooting and Service

Pre-Service Checks and Common Issues

Operation and Performance Problem Solving

When to Contact Service Personnel

Appendix - Installation Information

Outdoor Unit Installation Guidelines

Indoor Unit Installation Space Requirements

Related product manuals