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Unit Won't Power On - Window or Through the Wall

  • Troubleshooting

At a Glance

If the air conditioner does not power on, possible causes are; power outage in the home tripped the circuit breaker, the outlet that the unit is plugged into does not have power, or the unit may require a repair service. For other related power power issues, please visit Power Issues - Room Air Conditioner content.

If the air conditioner does not power on, possible causes are: power outage in the home tripped the circuit breaker, the individual outlet has no power, or the unit is defective.

Try This

  1. The air conditioner power plug has an indicator light which can be OFF (No Light), GREEN, or RED (orange).


    What is the STATUS (color) of the power plug INDICATOR LIGHT?

    OFF Green Red
  2. Light OFF


    Lets check the outlet:

    1Reset the GFCI outlet if you have one.

    image showing GFCI outlet

    2Check if the circuit breaker was tripped, if so switch back.

    image showing the circuit breaker

    3Test if the outlet has power by plugging in another electric device besides the air conditioner like a hair dryer, or electrical clock.

    image showing the outlet being tested by another electrical device

    Is the outlet receiving power?

    YES NO
  3. Power - YES


    If you have confirmed that the outlet is recieving electrical power, try the following:

    1Press RESET on the power plug.

    2Power ON the air conditioner from the control panel.

    reset button
    Note

    If the unit does not turn on, the air conditioner is not receiving power. The unit will require a repair service please visit our Request a Repair page.

  4. Power - NO


    Since you verified that the outlet is not receiving power we recomend contacting an electrician for further assistance.

  5. Green Light


    The air conditioner IS receiving power, lets try to restart it with the following steps:

    1Press the TEST button on the power plug.

    2Press the RESET button on the power plug.

    3Press the POWER button on the control panel.

    Did the air conditioner power on?

    Yes No
  6. Power - YES


    The air conditioner has a safety relay that may have been tripped causing the power OFF condition.

    If the issue happens again, please feel free to reach out to our 24/7 chat support.


    WE'RE HERE TO HELP

    Need to contact us?

    If you have other questions or concerns, reach out to our 24/7 Chat Support for further assistance.

  7. Power - NO


    The unit will require a technician to check the CONTROL PANEL, please visit our Request a Repair page.

  8. Red Light


    A red light on an LG AC power cord usually indicates a problem with the power connection, like a faulty outlet, incorrect wiring, or a loose connection.

    The air conditioner IS receiving power, lets try to restart it with the following steps:

    1Unplug and replug the AC back into the outlet.

    2Press RESET on the power plug. The indicator light should turn GREEN.

    3Press POWER on the air conditioner control panel.

    Did the air conditioner power on?

    Yes No
  9. Power - YES


    Power should now be restored to the air conditioner.

    If the issue happens again, please feel free to reach out to our 24/7 chat support.


    WE'RE HERE TO HELP

    Need to contact us?

    If you have other questions or concerns, reach out to our 24/7 Chat Support for further assistance.

  10. Power - NO


    The unit will require a technician to check the POWER CORD, please visit our Request a Repair page.

*Required question

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