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LG S4NQ12JA3QJ - User Manual

LG S4NQ12JA3QJ
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www.lg.com
OWNER’S MANUAL
AIR CONDITIONER
Copyright © 2021 LG Electronics Inc. All Rights Reserved
TYPE: WALL MOUNTED
MFL69781403
Rev.00_020521
Read this owner's manual thoroughly before operating the
appliance and keep it handy for reference at all times.
EN ENGLISH FR FRANÇAIS PT PORTUGUÊS

Table of Contents

Questions and Answers

  • J
    Jean BenderSep 3, 2025
    Why is my LG Air Conditioner not blowing warm air?
    • N
      Nicholas CervantesSep 4, 2025
      If your LG Air Conditioner isn't emitting warm air, it could be due to several reasons. When Heating Mode starts, the vane is almost closed, and no air comes out, even though the outdoor unit is operating - this is normal, wait until the unit has generated enough warm air to blow through the indoor unit. The outdoor unit may be in Defrosting Mode, which removes frost from the coil, typically lasting about 15 minutes. The heating effect may not be sufficient if the outside temperature is too low.
  • S
    Scott CollinsSep 18, 2025
    Why is my LG S4NQ12JA3QJ emitting mist?
    • G
      ghughesSep 18, 2025
      The air outlet on the indoor unit of your LG Air Conditioner may discharge mist when the room temperature decreases. This is normal and should disappear as the room temperature stabilizes.
  • C
    Cathy YangSep 16, 2025
    Why can't I change the temperature on my LG Air Conditioner?
    • T
      Thomas WeberSep 16, 2025
      If you cannot adjust the temperature on your LG Air Conditioner, it is possible that the unit is set to Fan Mode or Jet Mode. To adjust the temperature, select an operation mode that allows temperature adjustments.
  • R
    Robin LyonsSep 14, 2025
    Why can't I adjust the fan speed on my LG S4NQ12JA3QJ Air Conditioner?
    • A
      Ashley BeasleySep 14, 2025
      If you cannot adjust the fan speed on your LG Air Conditioner, it might be because Jet Mode or Auto Operation Mode is currently selected. To regain control over the fan speed, select a different operation mode that allows for manual adjustments.
  • C
    cruzannSep 12, 2025
    Why does my LG Air Conditioner smell bad?
    • K
      Kimberly PotterSep 12, 2025
      If your LG Air Conditioner's indoor unit emits an odor, it may be due to absorbed smells like cigarette smoke being discharged with airflow. If the smell persists, try washing the filter. If that doesn't resolve the issue, contact the service center to clean the heat exchanger.
  • T
    Trevor WilliamsSep 12, 2025
    What to do if my LG S4NQ12JA3QJ doesn't work normally?
    • C
      Cindy GonzalezSep 12, 2025
      If your LG Air Conditioner isn't working normally, and you notice a burning smell or strange sounds coming from the unit, turn it off immediately, disconnect the power supply, and contact the service center.
  • A
    Amy WilliamsSep 9, 2025
    Why is my LG S4NQ12JA3QJ Air Conditioner not emitting warm air?
    • B
      Bradley AlvarezSep 9, 2025
      If your LG Air Conditioner isn't emitting warm air, and the vane is almost closed when Heating Mode starts, wait until the unit generates enough warm air to blow through the indoor unit. If the outdoor unit is in Defrosting Mode, allow about 15 minutes for it to finish removing frost. Note that if the outside temperature is too low, the heating effect may not be sufficient.
  • S
    Samuel HoSep 7, 2025
    Why does my LG Air Conditioner smell?
    • E
      Erin SmithSep 7, 2025
      Odors absorbed into your LG Air Conditioner's indoor unit, such as cigarette smoke, can be discharged with airflow. If the smell persists, wash the filter. If that doesn't work, contact a service center to clean the heat exchanger.
  • M
    Michael NashSep 5, 2025
    Why is my LG S4NQ12JA3QJ Air Conditioner still running after I turn it off?
    • D
      David BarnesSep 5, 2025
      The indoor unit of your LG Air Conditioner might still operate after being turned off because the Auto Clean function is running to remove remaining moisture inside the unit. If you prefer to stop this, you can turn off the unit completely.
  • D
    David SmithAug 20, 2025
    Why my LG S4NQ12JA3QJ Air Conditioner doesn't work?
    • T
      Tyler AlvarezAug 20, 2025
      If your LG Air Conditioner isn't working, start by ensuring it's plugged in and that power isolators are switched on. Check the fuse and circuit breaker. If there was a power failure, wait 3 minutes after power is restored before turning the unit back on. Also, ensure the remote's batteries are correctly inserted or replaced, and that the unit wasn't turned off automatically by a timer.

LG S4NQ12JA3QJ Specifications

General IconGeneral
BrandLG
ModelS4NQ12JA3QJ
CategoryAir Conditioner
LanguageEnglish

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