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Error code reference

Samsung Air Conditioner Error Code 226

Outdoor temperature sensor dislocation error.

Samsung codesSamsung air conditioner codes

Outdoor temperature sensor dislocation error.

First step from the service manual

Check if the outdoor temp sensor is mounted in the right position.

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

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  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
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What 226 means on a Samsung air conditioner

Error code 226 on a Samsung air conditioner indicates an outdoor temperature sensor dislocation error. This means the unit's control board has detected that the outdoor ambient temperature sensor is not properly positioned or has shifted out of its designated mounting location. The outdoor temperature sensor is a thermistor that feeds real-time ambient air temperature data to the system's controller, which uses this information to regulate refrigerant cycling, compressor operation, and overall system efficiency. When the sensor is displaced, it may read incorrect temperatures, causing the system to make faulty operational decisions or trigger a fault shutdown.

The most common cause of this error is physical displacement of the sensor from its mounting bracket or clip, which can happen due to vibration during operation, improper handling during a previous service visit, or weather-related disturbance. A sensor that has slipped out of position may be reading temperatures from the wrong surface or the surrounding air in an unintended location, rather than the controlled measurement point the system expects.

Diagnosing this error begins with a physical inspection of the outdoor unit. Technicians should locate the outdoor ambient temperature sensor, typically a small thermistor probe mounted near the outdoor coil or air inlet area, and confirm it is seated securely in its correct mounting position. If the sensor appears correctly placed, the wiring harness and connector should also be inspected for damage, looseness, or corrosion that could be causing an erroneous reading interpreted as dislocation.

Source: manufacturer service documentation.

Common causes of 226

  1. 01

    Sensor displaced from mounting bracket

    Wiring / connection

    The thermistor probe has slipped or been knocked out of its designated mounting clip or bracket on the outdoor unit. A visual inspection of the outdoor unit will reveal the sensor hanging loose or positioned away from its intended location.

  2. 02

    Loose or disconnected wiring connector

    Wiring / connection

    The connector at the sensor or control board end of the sensor wiring harness may have become loose, causing the system to interpret the signal as a positioning fault. Check all connectors along the sensor wire for secure seating.

  3. 03

    Sensor physically damaged

    Part replacement

    The sensor probe or its lead wires may have been damaged by vibration, rodent activity, or weather exposure, resulting in an out-of-range resistance signal. Inspect the probe and wiring for visible damage such as cuts, crimps, or corrosion.

  4. 04

    Incorrect reinstallation after prior service

    Wiring / connection

    If the outdoor unit was recently serviced or cleaned, the sensor may not have been returned to its correct position. Review whether any recent maintenance work was performed on the outdoor unit.

  5. 05

    Faulty outdoor temperature sensor

    Part replacement

    The sensor itself may have failed internally and is sending an erratic or out-of-range signal that the control board flags as a dislocation error. Resistance testing of the thermistor can confirm whether it has drifted outside its expected range.

See the test procedure for each cause

Frequently asked questions about 226

What does 226 mean on a Samsung air conditioner?
Error code 226 on a Samsung air conditioner is an outdoor temperature sensor dislocation error. It indicates that the control board has determined the outdoor ambient temperature sensor is not in its correct mounting position. The sensor may have shifted, become loose, or been inadvertently displaced, preventing accurate temperature readings. The system typically faults out to protect itself from operating on incorrect environmental data.
How do I fix error code 226 on my Samsung air conditioner?
Start by inspecting the outdoor unit for the ambient temperature sensor and confirming it is seated in its correct mounting clip or bracket. If it has slipped out, repositioning it securely will often clear the error. You should also check the sensor wiring and connectors for looseness or damage. If the sensor is damaged or fails a resistance test, it will need to be replaced.
Will resetting my Samsung air conditioner clear the 226 error?
A power reset may temporarily clear the error code, but if the underlying cause (a displaced or faulty sensor) is not corrected, the error will return once the unit resumes operation. A reset should only be performed after the sensor has been physically inspected and repositioned or repaired. Repeated resets without addressing the root cause can allow the system to operate on inaccurate temperature data.
Is it safe to run my Samsung air conditioner with error code 226 active?
It is generally not advisable to continue running the unit with error code 226 active. The outdoor temperature sensor provides critical data that the system uses to control compressor and refrigerant operations. Running the unit with a displaced or faulty sensor can lead to inefficient operation, component stress, or additional faults. Addressing the error promptly is the safest course of action.
How much does it cost to fix a Samsung air conditioner outdoor temperature sensor error?
If the fix is simply repositioning the sensor, the cost is limited to a service call fee, which typically ranges from $50 to $150 depending on your area. If the sensor itself needs to be replaced, parts and labor combined can range from $100 to $300. Wiring harness repairs, if needed, may add additional cost depending on the extent of the damage.

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