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Error code reference

LG Hvac Error Code Po

Jet Cool Mode active (not an error).

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Jet Cool Mode active (not an error).

First step from the service manual

To cancel, press Jet Cool, Fan Speed or Set Temperature button.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What Po means on a LG hvac

The Po indicator on an LG air conditioner is not an error code. It is a status notification that appears when the unit is operating in Jet Cool Mode. Jet Cool is a feature designed to rapidly lower the room temperature by running the compressor and fan at maximum capacity for a set period. During this mode, the system bypasses standard temperature setpoint control and operates at full cooling output to achieve the fastest possible temperature drop. The Po display simply confirms that this mode is currently active.

Because Jet Cool Mode is intentionally aggressive, the unit will continue running at maximum output until the mode is manually cancelled or its preset duration expires. The display showing Po is functioning exactly as designed and does not indicate any fault in the refrigerant circuit, electrical components, or control board. No diagnostic investigation of hardware is necessary when this indicator appears.

To exit Jet Cool Mode and return to standard operation, press any of the following buttons on the remote or control panel: the Jet Cool button itself, the Fan Speed button, or the Set Temperature button. Any of these inputs will cancel the mode and return the unit to its previous operating parameters. If the Po display does not clear after pressing one of these buttons, verify that the remote is communicating with the unit and that the button press is being received by the indoor unit.

Source: manufacturer service documentation.

Common causes of Po

  1. 01

    Jet Cool Mode intentionally activated

    Wiring / connection

    The most common reason Po appears is that Jet Cool Mode was deliberately selected using the Jet Cool button on the remote control. This is normal operation and requires no corrective action unless you want to return to standard mode.

  2. 02

    Accidental button press activating Jet Cool

    Wiring / connection

    The Jet Cool button may have been pressed unintentionally, triggering the mode without the user meaning to select it. Pressing the Jet Cool, Fan Speed, or Set Temperature button will cancel it immediately.

  3. 03

    Mode not cancelled after previous use

    Wiring / connection

    If the unit was powered off while Jet Cool Mode was active, some models may resume the mode when powered back on. Pressing any of the three designated buttons will exit the mode.

See the test procedure for each cause

Frequently asked questions about Po

What does Po mean on a LG hvac?
Po on an LG air conditioner indicates that Jet Cool Mode is active. This is a built-in feature that runs the unit at maximum cooling capacity to reduce room temperature as quickly as possible. It is a status notification, not a fault code, and no repairs are needed. You can cancel it by pressing the Jet Cool, Fan Speed, or Set Temperature button.
How do I fix the Po code on my LG air conditioner?
No repair is needed because Po is not an error. To cancel Jet Cool Mode and return to normal operation, press the Jet Cool button, the Fan Speed button, or the Set Temperature button on the remote or control panel. The Po indicator should disappear immediately once any of these buttons is pressed.
Is it safe to keep running my LG AC while Po is displayed?
Yes, it is completely safe to run the unit while Po is displayed. The system is operating as designed in Jet Cool Mode, running at full capacity to cool the space quickly. There is no risk to the unit or the occupants. If you prefer quieter or lower-intensity operation, simply cancel the mode using the designated buttons.
Will resetting my LG air conditioner clear the Po display?
Cycling power to the unit may or may not clear Jet Cool Mode depending on the specific model. The correct and reliable way to exit the mode is to press the Jet Cool, Fan Speed, or Set Temperature button on the remote. This will cancel the mode without requiring a full reset.
Does the Po code mean my LG air conditioner needs a repair, and what would it cost?
No repair is required for the Po indicator. It is a feature status display, not a fault code, so there is no component failure involved and no associated repair cost. If for any reason the display does not clear after pressing the designated cancel buttons, the issue may relate to remote control communication rather than a hardware fault, and that situation would require separate diagnosis.

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