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Error code reference

Samsung Air Conditioner Error Code E225

Outdoor COND-OUT sensor breakaway.

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Outdoor COND-OUT sensor breakaway.

First step from the service manual

Check if the corresponding outdoor unit COND OUT sensor is separated; assemble and adjust.

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

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What E225 means on a Samsung air conditioner

Error code E225 on a Samsung air conditioner indicates that the outdoor unit condenser outlet (COND-OUT) temperature sensor has become physically separated or disconnected from its mounting position. This sensor monitors the refrigerant temperature at the condenser outlet, which is a critical measurement point the control board uses to regulate system operation, prevent overheating, and confirm proper refrigerant flow through the condenser coil. When the sensor separates from its bracket or connection point, the control board can no longer receive a valid temperature reading, triggering the E225 fault.

The COND-OUT sensor is typically a thermistor-type component clipped or secured to the refrigerant line or coil at the outlet side of the outdoor condenser. Vibration during normal operation, improper installation, or physical disturbance to the outdoor unit can cause the sensor clip or bracket to loosen, allowing the sensor to pull away from the surface it is meant to measure. When the sensor is not in contact with the correct surface, readings become inaccurate or fall outside expected ranges, prompting the error.

The first diagnostic step is to inspect the outdoor unit and locate the COND-OUT sensor. Technicians should check whether the sensor body has separated from its mounting clip, whether the clip itself has broken or deformed, and whether the sensor lead wiring remains intact and properly connected to the control harness. If the sensor is simply dislodged, reassembling it into its correct position and securing the clip may clear the fault without requiring parts replacement.

Source: manufacturer service documentation.

Common causes of E225

  1. 01

    Sensor physically dislodged from mounting clip

    Wiring / connection

    The most common cause is the COND-OUT sensor body slipping out of its retaining clip on the condenser outlet line. Inspect the outdoor unit for a loose sensor hanging by its wire rather than seated against the refrigerant line or coil surface.

  2. 02

    Broken or deformed sensor mounting clip

    Part replacement

    The plastic clip that holds the sensor in position can crack or deform due to vibration, UV exposure, or physical impact. If the clip no longer holds the sensor securely, the sensor will repeatedly separate even after being reattached.

  3. 03

    Loose or disconnected sensor wiring connector

    Wiring / connection

    The sensor lead connector to the outdoor control board harness may have loosened or pulled free, causing a loss of signal that the board interprets as sensor separation. Check the connector at both the sensor end and the board end for secure engagement.

  4. 04

    Damaged or faulty thermistor sensor

    Part replacement

    If the sensor body itself is cracked, corroded, or internally failed, it may trigger this error even when physically positioned correctly. A resistance check of the thermistor can help confirm whether the sensor itself needs replacement.

  5. 05

    Physical disturbance to outdoor unit

    Wiring / connection

    Impact from debris, animals, or service activity can displace sensors and wiring inside the outdoor unit. If the error appeared after a storm, maintenance visit, or nearby construction, inspect all sensor mounting points for displacement.

See the test procedure for each cause

Frequently asked questions about E225

What does E225 mean on a Samsung air conditioner?
E225 means the outdoor unit condenser outlet (COND-OUT) temperature sensor has separated or become disconnected from its mounting position. The control board can no longer read a valid temperature at the condenser outlet, which is required for proper system operation. This is primarily a physical displacement fault rather than an electrical failure, and in many cases it can be resolved by locating and reseating the sensor.
How do I fix error code E225 on my Samsung air conditioner?
Start by powering down the unit and accessing the outdoor section to locate the COND-OUT sensor. Check whether the sensor has pulled out of its mounting clip on the condenser outlet line and reseat it firmly if so. Also inspect the sensor wiring connector to the control board harness to make sure it is fully engaged. If the clip is broken or the sensor itself is damaged, those components will need to be replaced before the fault will clear.
Is it safe to run my Samsung air conditioner with error code E225 active?
It is not recommended to continue operating the unit while E225 is active. The COND-OUT sensor provides temperature data the control board uses to protect the system from overheating and to confirm correct refrigerant flow. Running the system without this input could allow operating conditions that would stress or damage compressor and refrigerant circuit components.
Will resetting my Samsung air conditioner clear the E225 error?
A simple reset is unlikely to permanently clear E225 because it is caused by a physical condition, specifically a displaced or disconnected sensor, rather than a transient software or communication fault. The error will typically return on startup if the underlying sensor separation has not been corrected. The sensor must be physically reattached and secured before a reset will result in normal operation.
How much does it cost to repair a Samsung air conditioner showing E225?
If the sensor only needs to be repositioned and clipped back into place, repair costs may be limited to a service call fee, typically in the range of $75 to $150 depending on your location and technician. If the mounting clip or the sensor thermistor itself needs replacement, parts and labor combined could bring the total to roughly $100 to $300. Costs vary based on unit model, parts availability, and local labor rates.

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