Samsung Air Conditioner Blinking Lights

Samsung air conditioners are known for their efficiency and reliability, but like any electronic device, they can sometimes encounter issues. One common problem that Samsung air conditioner users might face is blinking lights on the unit’s control panel. These blinking lights can indicate various issues, and it’s essential to understand their meanings and how to troubleshoot them.

Understanding the Blinking Lights:


Several factors can trigger blinking lights on a Samsung air conditioner:

  1. Power Issues:
    • If there is a power surge or a sudden power outage, it can disrupt the air conditioner’s operation, leading to blinking lights.
  2. Filter Clogs:
    • A dirty or clogged air filter can obstruct airflow and cause the unit to overheat, leading to error codes.
  3. Thermostat Settings:
    • Incorrect thermostat settings can make the air conditioner behave erratically, resulting in blinking lights.
  4. Sensor Problems:
    • Faulty temperature or humidity sensors can misinform the unit, causing it to malfunction.
  5. Refrigerant Leaks:
    • Insufficient refrigerant levels due to leaks can affect the cooling process, triggering error codes.

Troubleshooting Steps:

Step 1: Check the Power Supply

  • Ensure that the air conditioner is properly plugged in and that the circuit breaker hasn’t tripped.
  • Check for any loose or damaged power cords.

Step 2: Inspect the Air Filter

  • Remove and clean the air filter. If it’s too dirty, consider replacing it.
  • A clean filter ensures proper airflow and prevents overheating.

Step 3: Review Thermostat Settings

  • Verify that the thermostat is set to the desired temperature and mode (cool, heat, fan, etc.).
  • Ensure the fan speed setting is appropriate for your comfort.

Step 4: Examine Sensors

  • Clean the temperature and humidity sensors if they are dirty or obstructed.
  • If the sensors are faulty, consider contacting a technician for replacement.

Step 5: Check for Refrigerant Leaks

  • Look for any visible signs of refrigerant leakage around the unit.
  • If you suspect a leak, it’s essential to contact a professional technician for repairs.

Step 6: Refer to the User Manual

  • Consult the user manual or the manufacturer’s website for specific error code meanings related to your air conditioner model.
  • Some models may require unique troubleshooting steps.

Step 7: Reset the Unit

  • Sometimes, a simple reset can resolve minor issues. Turn off the power, wait for a few minutes, and then turn it back on.

Step 8: Clean the Condenser and Evaporator Coils

  • Over time, the condenser and evaporator coils can accumulate dust and debris, reducing the unit’s efficiency and potentially causing it to malfunction. Cleaning these coils with a soft brush or compressed air can improve performance and help resolve some issues.

Step 9: Inspect the Drainage System

  • A clogged drainage system can lead to water leaks and trigger error codes. Check the drain pan and condensate drain lines for blockages. Clear any obstructions and ensure proper drainage.

Step 10: Perform a Hard Reset

  • If the blinking lights persist after a standard reset, try a hard reset. This involves completely disconnecting the air conditioner from power for at least 30 minutes. This can sometimes reset internal components and resolve persistent issues.

Step 11: Firmware Update

  • In some cases, a firmware update might be available to address known issues. Check Samsung’s official website or contact their customer support to inquire about and perform any necessary updates.

Step 12: Seek Professional Assistance

  • If you’ve gone through the troubleshooting steps and the blinking lights continue, or if you are uncomfortable performing these tasks, it’s time to call a certified technician. They have the expertise and tools to diagnose and repair complex issues.

Preventive Measures:

  • To avoid future blinking light issues, consider these preventive measures:
    • Regularly clean or replace air filters.
    • Schedule annual professional maintenance to inspect and service your air conditioner.
    • Keep the area around the outdoor unit free from debris and vegetation.

Common Blinking Light Codes

CodeBlinking PatternMeaningTroubleshootingSolution
12 short blinksCommunication errorCheck wiring connectionsReconnect wires or consult a technician
24 short blinksLow refrigerantCheck for leaksAdd refrigerant and seal leaks
33 short blinksHigh/low voltageCheck power supplyConsult an electrician
41 long blinkInternal errorRestart the AC unitIf the issue persists, call for service
55 short blinksFan motor malfunctionInspect the fan motorReplace or repair the fan motor
62 long blinksCompressor failureCheck compressor statusCall a technician for repairs
71 short blinkNormal operation (no problem)N/ANo action needed
86 short blinksSensor errorCheck temperature sensorsReplace faulty sensors or call service
94 long blinksDrainage system issueInspect the drainage systemClear blockages or call for service
103 long blinksPCB (Control Board) malfunctionCheck control boardReplace the control board if needed

Blinking Light Colors

GreenNormal operationN/ANo action needed
RedCritical errorCheck the error codeRefer to the user manual or call service
OrangeLow power modeInsufficient power supplyConsult an electrician
YellowMaintenance reminderFilter or cleaning requiredClean or replace filters
BlueCooling modeN/ANo action needed
WhiteHeating modeN/ANo action needed
PurpleDehumidifying modeN/ANo action needed

 Blinking Light Patterns

Steady BlinkingStandby modeN/ANo action needed
Rapid BlinkingSystem errorCheck the error codeRefer to the user manual or call service
Alternating BlinkingDefrosting modeN/ANo action needed
Intermittent BlinkingFilter cleaning reminderClean or replace filtersFollow maintenance instructions
Slow BlinkingDelayed start or timer settingReview timer settingsAdjust timer settings as needed

Blinking Light Locations

Indoor UnitInternal error or sensor issueCheck indoor unit displayRestart or call for service
Outdoor UnitCompressor or communicationCheck outdoor unit displayRestart or call for service
Remote ControlRemote control errorCheck remote displayReplace batteries or reset remote
Control PanelControl board or settings errorCheck control panelReset settings or call for service
Air FilterFilter cleaning reminderCheck filter indicatorClean or replace filters

Actions for Blinking Lights

Power CycleTurn off and on the AC unit
Check CodesRefer to the user manual for error code meanings
Inspect WiringEnsure all connections are secure
Clean FiltersRemove and clean or replace filters
Verify SettingsCheck temperature and mode settings
Call TechnicianIf issues persist or are complex, seek professional help
Maintain RegularlyFollow recommended maintenance schedule


Blinking lights on a Samsung air conditioner are a way for the unit to communicate problems it’s experiencing. Understanding the causes and following the appropriate troubleshooting steps can help you resolve the issue and restore your air conditioner to optimal functioning. However, if you cannot resolve the problem on your own or suspect a more significant issue, it’s advisable to seek professional assistance to avoid further damage or safety hazards.


Samsung Air Conditioner Blinking Lights

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