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Error code reference

Samsung Air Conditioner Error Code E241

Discharge temperature sensor error

Samsung codesSamsung air conditioner codes

Discharge temperature sensor error – wire open or short.

First step from the service manual

Check if sensor connector is disconnected from PCB; measure resistance across terminals.

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

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What E241 means on a Samsung air conditioner

Error code E241 on a Samsung air conditioner indicates a fault in the discharge temperature sensor circuit. The discharge temperature sensor monitors the refrigerant temperature at the compressor outlet, which is a critical measurement for protecting the compressor from overheating and for regulating system performance. When the control PCB detects that the signal from this sensor falls outside the expected range, it logs E241 and may shut down the unit to prevent compressor damage.

The error is triggered by one of two electrical fault conditions: an open circuit or a short circuit in the sensor wiring. An open circuit means the electrical path between the sensor and the PCB is broken, causing the resistance reading to spike toward infinity. A short circuit means two conductors are making unintended contact, pulling the resistance reading toward zero. Both conditions produce a signal that the PCB cannot interpret as a valid temperature, so it flags the fault immediately.

The most common starting point for diagnosis is the sensor connector at the PCB. Connectors can work loose due to vibration or handling during previous service, and a disconnected connector presents exactly the same electrical signature as an open-circuit sensor. If the connector is seated correctly, the next step is to measure resistance across the sensor terminals and compare the reading to the expected value for the ambient temperature. A reading of near zero ohms confirms a short; an infinite or very high reading confirms an open in the sensor or its wiring harness.

Source: manufacturer service documentation.

Common causes of E241

  1. 01

    Disconnected sensor connector at PCB

    Wiring / connection

    The discharge temperature sensor connector may have come loose from the control board, breaking the circuit entirely. Visually inspect the PCB header for the sensor lead and press the connector firmly into place before further testing.

  2. 02

    Failed discharge temperature sensor

    Part replacement

    The sensor itself may have failed internally, producing either an open or short circuit. Measure resistance across the two sensor terminals; a reading near zero ohms or an infinite reading when the connector is plugged directly at the sensor indicates a faulty sensor that needs replacement.

  3. 03

    Damaged wiring harness

    Part replacement

    The wire leads between the sensor and the PCB can become pinched, chafed, or broken due to routing issues or contact with sharp sheet metal edges. Inspect the entire harness run for visible damage, and use a continuity tester to check each conductor individually.

  4. 04

    Corroded or oxidized connector terminals

    Wiring / connection

    Moisture intrusion can cause the connector pins or receptacle terminals to corrode, increasing resistance to the point where the PCB reads the circuit as open. Inspect the connector for green or white oxidation and clean the terminals with an appropriate contact cleaner.

  5. 05

    Faulty control PCB

    Part replacement

    If the sensor and all wiring check out within spec, the PCB input circuit for the discharge sensor may have failed. This is the least common cause and should only be considered after all sensor and wiring tests are completed.

See the test procedure for each cause

Frequently asked questions about E241

What does E241 mean on a Samsung air conditioner?
E241 indicates a discharge temperature sensor error caused by an open or short circuit in the sensor or its wiring. The discharge temperature sensor monitors refrigerant temperature at the compressor outlet, and the control board uses this reading to protect the compressor. When the board detects an invalid signal, it logs E241 and may shut the unit down. Diagnosis begins with checking the sensor connector at the PCB and measuring sensor resistance.
Can I fix E241 myself, or do I need a technician?
A knowledgeable DIYer can perform initial checks such as reseating the sensor connector and visually inspecting the wiring harness for damage. However, measuring sensor resistance accurately requires a multimeter and some familiarity with reading resistance values relative to temperature. Replacing the discharge temperature sensor or diagnosing a PCB fault typically requires a qualified technician, especially since the work involves components near refrigerant lines.
Is it safe to run my Samsung air conditioner with an E241 error?
Running the unit while E241 is active is not recommended. The discharge temperature sensor protects the compressor from overheating by providing real-time outlet temperature data to the control board. Without a valid sensor reading, the unit cannot properly manage compressor operation, and continued use risks compressor damage, which is a significantly more expensive repair than fixing the sensor.
Will resetting the air conditioner clear the E241 error?
A power reset may temporarily clear the error code from the display, but if the underlying fault in the sensor circuit has not been repaired, the code will return as soon as the unit attempts normal operation. A reset is only useful as a first step to confirm whether the fault is intermittent, such as a loose connector that reseated itself, rather than a permanent fix for a damaged sensor or wiring.
How much does it cost to repair an E241 error on a Samsung air conditioner?
Repair costs depend on the root cause. A replacement discharge temperature sensor typically falls in the range of $20 to $75 for the part alone. Adding professional labor, total repair costs generally range from $100 to $250 for a sensor or wiring harness replacement. If the control PCB itself has failed, costs can rise significantly higher, often in the range of $200 to $500 or more depending on the unit model and part availability.

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