How to Fix a Samsung Mini Split E559 Error Code: A Comprehensive DIY Guide

The Samsung mini split e559 error code is a common issue that indicates a short in the outdoor heat exchanger sensor. This comprehensive guide will walk you through the step-by-step process to diagnose and fix the problem, providing you with the technical details and expert-level insights to tackle this task as a DIY project.

Identifying the E559 Error Code

The e559 error code on a Samsung mini split air conditioner is specifically associated with the smart inverter system. This error code indicates a short circuit in the outdoor heat exchanger sensor, which is responsible for detecting the temperature of the outdoor unit’s heat exchanger.

Inspecting the Outdoor Unit

how to fix a samsung mini split e559 error codeImage source: Flickr

To begin the troubleshooting process, you’ll need to access the outdoor unit of your Samsung mini split system. This typically involves removing the cover of the outdoor unit, which is usually secured with screws or clips. Once the cover is removed, you can locate the heat exchanger sensor, which is a small, black component with two wires attached.

Replacing the Heat Exchanger Sensor

If the heat exchanger sensor is found to be shorted, you’ll need to replace it. To do this, you’ll require the following tools:

  • Phillips head screwdriver
  • Replacement heat exchanger sensor (ensure it has the same part number as the original)

Begin by disconnecting the two wires from the existing sensor. Then, use the Phillips head screwdriver to remove any screws or clips holding the sensor in place. Carefully remove the old sensor and install the new one, ensuring it is securely connected to the wires and positioned in the same location as the original.

Resetting the Unit

After replacing the heat exchanger sensor, it’s essential to reset the unit. This can be done by turning the air conditioner off and then back on again. Once the unit has been reset, the e559 error code should disappear, and the system should resume normal operation.

Technical Specifications

The outdoor heat exchanger sensor is typically located near the bottom of the outdoor unit. It is a small, black component with two wires attached, and it should be replaced if it shows signs of damage or wear.

When replacing the sensor, ensure that the new one has the same part number as the original. This will ensure compatibility and proper functioning of the system.

Troubleshooting and Further Assistance

If the e559 error code persists after replacing the heat exchanger sensor and resetting the unit, it’s recommended to contact Samsung or an authorized repair person for further assistance. They can provide additional troubleshooting steps or determine if there are any other underlying issues with the system.


By following the step-by-step guide provided in this comprehensive manual, you can effectively diagnose and fix the Samsung mini split e559 error code as a DIY project. Remember to always prioritize safety, use the appropriate tools, and refer to the technical specifications to ensure a successful repair. If you encounter any difficulties or the issue persists, don’t hesitate to seek professional help from Samsung or an authorized repair service.


  1. Samsung Support: Check Out the Displayed Error Codes on the Indoor Unit Air Conditioner
  2. YouTube: Samsung Inverter Error E5 59 (Resolved, Read Description)
  3. YouTube: Samsung Air-conditioning | error E559 | E332 | E199 | Smart Inverter