LG Air Conditioner – How to Fix A/C Power Issues

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1. Portable Window Through the Wall Ductless/Split
2. • Air Conditioner Won't Power On

     

     1. Check the A/C power cord.

        Unplug the power cord and inspect it for damage or splitting. If free of damage, plug the A/C power cord into its own outlet and ensure it is fully inserted.

        Note

        If the power cord is damaged or problems continue, service will be required. Please visit our Request a Repair page for further assistance.

     2. Check if the circuit breaker is tripped.

        Inspect the home's circuit breaker or the fuse dedicated to the air conditioner to see if it has been tripped or is blown. Reset or replace if necessary.

        Note

        If service is required. Please visit our Request a Repair page for further assistance.

     3. The current interrupter device is tripped.

        Press the [RESET] button located on the power cord plug. If the [RESET] button will not stay engaged, discontinue use of the air conditioner, as service is required.

        Note

        If service is required. Please visit our Request a Repair page for further assistance.

   • Air Conditioner Powers On but Won't Run

     1. Check the air conditioner display for any error codes.

        Error codes can indicate a problem with the unit or that maintenance is required for proper function.

        Note

        If your air conditioner is displaying an error code, please visit our Air Conditioner - Error Code List article for further assistance.

     2. Check if the mode was switched from Cooling to Heat

        To protect the compressor, the fan and compressor will momentarily stop if you switch modes from Cool to Heat or vice versa. After a few minutes, the product will resume operating in the new mode.

     3. Check the A/C power cord

        Unplug the power cord and inspect it for damage or splitting. If free of damage, plug the cord in and ensure it is fully inserted into the outlet.

        Note

        If the power cord is damaged, service will be required. Please visit our Request a Repair page for further assistance.

     4. Check if the circuit breaker is tripped

        Inspect the home's circuit breaker or fuse dedicated to the air conditioner to see if it has been tripped or is blown. Reset or replace if necessary.

        Note

        If service is required. Please visit our Request a Repair page for further assistance.

     5. The current interrupter device is tripped

        Press the [RESET] button located on the power cord plug. If the [RESET] button will not stay engaged, discontinue use of the air conditioner, as service is required.

        Note

        If service is required. Please visit our Request a Repair page for further assistance.

   • Air Conditioner Powers Off Abnormally

     1. Check the air conditioner display for any error codes.

        Error codes can indicate a problem with the unit or that maintenance is required for proper function.

        Note

        If your air conditioner is displaying an error code, please visit our Air Conditioner - Error Code List article for further assistance.

     2. Check the A/C power cord

        Unplug the power cord and inspect it for damage or splitting. If free of damage, plug the cord in and ensure it is fully inserted into the outlet.

        Note

        If the power cord is damaged, service will be required. Please visit our Request a Repair page for further assistance.

     3. Check if the circuit breaker is tripped

        Inspect the home's circuit breaker or fuse dedicated to the air conditioner to see if it has been tripped or is blown. Reset or replace if necessary.

        Note

        If service is required. Please visit our Request a Repair page for further assistance.

     4. The current interrupter device is tripped

        Press the [RESET] button located on the power cord plug. If the [RESET] button will not stay engaged, discontinue use of the air conditioner, as service is required.

        Note

        If service is required. Please visit our Request a Repair page for further assistance.

   • Powers Off and On Intermittently

     1. Check the air conditioner display for any error codes.

        Error codes can indicate a problem with the unit or that maintenance is required for proper function.

        Note

        If your air conditioner is displaying an error code, please visit our Air Conditioner - Error Code List article for further assistance.

     2. Normal operation.

        It is normal for the air conditioner to cycle on and off every 5 to 10 minutes when the area has reached the desired temperature set in the display.

        Note

        If you wish to change this, try selecting a different cooling mode or lowering the set temperature.

   • Air Conditioner Trips the Circuit Breaker

     1. Confirm the outlet and breaker meets the power supply requirements.

        Check the owner's manual for your air conditioner to determine the specifications for your specific model. Visit our Manuals and Documents page to download a copy.

     2. Ensure the air conditioner is on a dedicated circuit breaker.

        Turn off all other electronics in the room and try using the unit again. If it operates properly, the unit is not on a dedicated breaker.

     3. Check the A/C power cord

        Unplug the power cord and inspect it for damage or splitting. If free of damage, plug the cord in and ensure it is fully inserted into the outlet.

        Note

        If the power cord is damaged, service will be required. Please visit our Request a Repair page for further assistance.

   • Air Conditioner Turns Off Every Few Minutes

     1. Energy Saver is Turned On.

        Check the owner's manual for your air conditioner to determine the specifications for your specific model. Visit our Manuals and Documents page to download a copy.

        How to deactivate Energy Saver Mode:

        1. Power [ON] the air conditioner.

        2. Press the [Mode] key repeatedly until "Energy Saver" mode is deselected.

     2. Check the temperature setting and mode.

        Turn off all other electronics in the room and try using the unit again. If it operates properly, the unit is not on a dedicated breaker.

3. If you need information about a split unit or duct free air conditioner, they are considered business units, please visit lghvac.com/contact-us/ for further support.