Samsung Inverter AC Error Code List | 2023 Troubleshooting Guide


Due to its effective cooling and low energy usage, Samsung inverter air conditioners have become famous for homes and businesses. These ACs could, however, experience issues that reduce their performance and lifespan, just like any other electrical equipment.

You can identify the problem and take the necessary actions to restore the functionality of your Samsung inverter AC by understanding the error codes that are shown on the device.

In this article, we’ll review the many fault codes your Samsung inverter AC could display and offer a thorough tutorial for troubleshooting and fixing them.

This blog will give you the information and resources you need to maintain the functionality and efficiency of your Samsung inverter AC, whether you’re a homeowner or a trained technician. Investigate the world of Samsung inverter AC error code list now!

Samsung Inverter AC Error Code List

Understanding Samsung Inverter AC Error Code List

On the LED screen of the interior unit or the remote control, your Samsung inverter AC will display an error code if one occurs. A specific problem associated with each error code must be fixed to get the AC working again. The most typical trouble codes for your Samsung inverter AC are listed below, along with their definitions:

E1- Indoor/outdoor units communication error:

  • This error code denotes a breakdown in communication between the AC’s indoor and outside components.
  • Wiring issues, loose connections, or faulty PCB are all potential culprits.
  • Steps for troubleshooting include inspecting the wiring and connections, resetting the AC, and, if necessary, replacing the PCB.

E2- Error detecting zero crossing:

  • This error code denotes an issue with the power supply for the AC.
  • Possible causes include an erratic power supply, defective electrical parts, or a damaged PCB.
  • Steps for troubleshooting include checking the power supply, replacing any defective parts, and, if necessary, replacing the PCB.

E3- High-pressure protection error:

  • This error code denotes that the high-pressure switch for the AC has been turned on.
  • Possible causes include a clogged or dirty condenser, a lack of refrigerant, or a broken outdoor fan motor.
  • Steps for troubleshooting include cleaning the condenser, checking the amount of refrigerant, and, if necessary, replacing the exterior fan motor.

E4- Low-pressure protection error:

  • This fault code indicates the activation of the low-pressure switch on the AC.
  • Possible causes include a clogged filter, leaking refrigerant, or a broken indoor fan motor.
  • Steps for troubleshooting include looking for refrigerant leaks, cleaning or replacing the filter, and, if necessary, replacing the indoor fan motor.

E5- Inoperative outdoor temperature sensor or open circuit:

  • This error code indicates an issue with the external temperature sensor.
  • Possible reasons include faulty wiring, a bad sensor, or a broken PCB.
  • Check the cabling and connections, replace the sensor if necessary, and replace the PCB as part of the troubleshooting process.

These are only a few examples of the error codes that your Samsung inverter AC may display. For a complete list of problem codes and related troubleshooting procedures, consult the user handbook for your air conditioner or contact a qualified expert.

We’ll give a thorough rundown of all the Samsung inverter AC error codes in the next section, along with explanations for each one.

Explore solutions for noisy air conditioners and other related issues in this guide on fixing a noisy air conditioner.

Samsung Inverter AC Error Code List: 2023 Updated

Samsung inverter air conditioners may display a variety of error codes to signify various problems. The meanings of all the Samsung inverter AC fault codes are listed below:

  • E101: Indoor and outdoor unit communication fault
  • E102: Wired remote controller and interior unit communication error
  • E103: Wireless remote controller and indoor unit communication fault
  • E104: Communication fault between the fan motors of the indoor and outside units
  • E105: Indoor unit and outdoor unit compressor communication fault
  • E106: Indoor unit and outside unit communication error PCB
  • E107: Indoor unit and outside unit compressor communication fault PCB
  • E108: Outside fan motor communication problem between indoor and outside units PCB
  • E109: Indoor fan motor indoor unit and exterior unit communication error PCB
  • E201: Zero-crossing detection
  • E202: IPM protection problem code
  • E203: Compressor high-pressure problem, code 
  • E204: Compressor low-pressure fault code 
  • E205: Outdoor unit fan motor
  • E206: Indoor unit fan motor fault code
  • E301: Error with the indoor heat exchanger temperature sensor
  • E302: Indoor unit room temperature sensor
  • E303: Heat exchanger temperature sensor on the outdoor unit
  • E304: Error with the outdoor unit pipe temperature sensor
  • E401: Indoor unit and wired controller communication fault
  • E402: Indoor unit and wireless controller communication error
  • E901: Memory fault
  • E902: Data storage error 

Each error code represents a separate issue that must be fixed. For steps to take and fixes for each problem code, consult the user handbook for your air conditioner or contact a qualified technician.

Remember that while some error codes can be fixed with simple troubleshooting, others might need the help of a qualified specialist. Without the correct information and equipment, attempting to repair complicated problems may further harm the AC and potentially endanger your safety. 

Preventive Tips to Avoid Samsung Inverter AC Error Code:

The adage “prevention is always better than cure” applies to your Samsung inverter air conditioner. Here are some preventative suggestions to assist you in staying clear of typical mistakes and keeping your AC in good working order:

  • Schedule routine maintenance with a qualified technician for your Samsung inverter air conditioner. This will assist in locating and resolving any potential concerns before they become significant issues.
  • Clogged or dirty filters can impede airflow, which decreases performance and efficiency. To ensure ideal airflow and avoid problems, routinely clean or replace the filters in your air conditioner.
  • Over time, the outside unit of your Samsung inverter AC may gather dirt, leaves, or other debris, impeding airflow and leading to problems. Keep any obstructions away from the outdoor unit and keep it clean.
  • Refrigerant levels should be checked since low refrigerant levels might make the AC work harder, resulting in mistakes and decreased efficiency. Regularly check your AC’s refrigerant levels and top them out as necessary.
  • Use AC as directed: To avoid problems and guarantee long-lasting performance, don’t overload your Samsung inverter AC above its recommended capacity. Instead, use it as required by the manufacturer.

By adhering to these preventative tips, you may avoid frequent mistakes and ensure your Samsung inverter AC functions appropriately for years.


In conclusion, it’s critical to comprehend Samsung inverter AC error codes to troubleshoot and fix any potential AC problems. Use this extensive list of error codes and their descriptions to discover and fix problems efficiently.

Additionally, you can avoid common mistakes and guarantee optimal performance and efficiency from your Samsung inverter AC by adhering to preventive advice and scheduling routine maintenance. If you have any recurring issues, seek help from a qualified technician.

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