LG LW1221HRSM User Manual (English)

Questions and Answers:

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Brian HickmanAug 14, 2025
Why my LG LW1221HRSM Air Conditioner does not start?
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  Daniel KellyAug 14, 2025
  If your LG Air Conditioner isn't starting, first ensure it's fully plugged into the outlet. Check your house's fuse or circuit breaker box, and replace the fuse or reset the breaker if needed. If there was a power failure, turn the mode control to off and wait 3 minutes after power is restored before restarting the unit. Finally, if the current interrupter device has tripped, press the RESET button on the power cord plug. If it won't stay engaged, stop using the air conditioner and contact a qualified technician.
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Justin FischerAug 17, 2025
What to do if my LG LW1221HRSM does not cool as it should?
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  Travis BrownAug 17, 2025
  If your LG Air Conditioner isn't cooling as expected, make sure that curtains, blinds, or furniture are not blocking the front of the unit. Also, ensure the set temperature is lower than the current room temperature. Clean the air filter every 2 weeks. Remember that after turning on the air conditioner, you need to allow time for the room to cool down. Check for open furnace floor registers and cold air returns. Finally, if the cooling coils have iced up, set the mode control at High Fan or High Cool.
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Brandon AdkinsAug 20, 2025
Why is my LG Air Conditioner freezing up?
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  Jessica LarsonAug 20, 2025
  If your LG Air Conditioner is freezing up, it's likely due to iced-over cooling coils. Ice can block airflow, preventing the unit from cooling properly. To resolve this, set the mode control to either High Fan or High Cool. This should help melt the ice and restore proper airflow.
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yolanda42Aug 25, 2025
What to do if my LG Air Conditioner water drips indoors?
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  Karla HuntAug 25, 2025
  To resolve water dripping indoors from your LG Air Conditioner, ensure the unit is properly tilted. It should slant slightly from the front to the rear of the cabinet to allow for proper water disposal.
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Gerald KimAug 27, 2025
Why does my LG LW1221HRSM Air Conditioner turn on and off rapidly?
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  Elizabeth FrazierAug 27, 2025
  If your LG Air Conditioner turns on and off rapidly, the air filter may be dirty and restricting airflow; try cleaning it. Also, extremely hot outside temperatures can cause this issue. In this case, refer to the installation instructions or check with the installer.
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Michael RamosAug 31, 2025
Why is my LG LW1221HRSM making noise when cooling?
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  Jenna ReidAug 31, 2025
  If you're experiencing noise when your LG Air Conditioner is cooling, it could be due to normal air movement sounds. If the noise is too loud, try setting the fan to a lower setting. Alternatively, window vibration from poor installation could be the cause. Refer to the installation instructions or check with the installer.
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Nancy FinleySep 3, 2025
Why is the remote sensing deactivating prematurely on my LG Air Conditioner?
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  Angela ClarkeSep 3, 2025
  If the remote sensing on your LG Air Conditioner is deactivating prematurely, make sure the remote control is within a 20 feet and 120° radius of the front of the unit. Also, check for and remove any obstructions that may be blocking the remote control signal.
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Billy HowardSep 6, 2025
What to do if my LG Air Conditioner makes room too cold?
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  Ian MacdonaldSep 7, 2025
  If your room is too cold when using your LG Air Conditioner, the set temperature might be too low. Try increasing the set temperature to a more comfortable level.
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Joshua TaylorSep 10, 2025
Why I have trouble connecting my LG appliance and smartphone to Wi-Fi network?
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  ygonzalezSep 10, 2025
  If you're having trouble connecting your LG appliance and smartphone to the Wi-Fi network, the password for the Wi-Fi network may have been entered incorrectly. Delete your home Wi-Fi network and begin the registration process again. Also, ensure that mobile data on your smartphone is turned off before registering the appliance. The wireless network name (SSID) should be a combination of English letters and numbers (without special characters). Only a 2.4 GHz router frequency is supported, so set the wireless router to 2.4 GHz. Finally, if the appliance is too far from the router, move the router closer to the appliance or install a Wi-Fi repeater.