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Error code reference

Samsung Refrigerator Error Code F5

Freezer Compartment Sensor Error

Samsung codesSamsung refrigerator codes

Freezer Compartment Sensor Error - wire cut, short-circuit, contact failure, or missing sensor. Can also be caused by a temperature reading > 150°F or < -58°F.

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What F5 means on a Samsung refrigerator

The F5 error code on a Samsung refrigerator indicates a fault in the freezer compartment temperature sensor circuit. This sensor, also called a thermistor, monitors the internal temperature of the freezer and continuously reports readings back to the main control board. When the board cannot obtain a valid reading from this sensor, it triggers the F5 code to alert the user and technician that closed-loop temperature control may be compromised.

The fault can originate from several points in the sensor circuit. A wire cut or physical break in the harness will interrupt the signal path entirely. A short circuit occurs when two conductors in the wiring contact each other or touch ground, producing an out-of-range resistance reading at the control board. Contact failure at a connector, caused by corrosion, moisture intrusion, or a partially seated plug, creates an intermittent or missing signal. In some cases the sensor itself has simply failed or was never installed correctly.

The control board also flags F5 when the sensor reports a temperature value outside the physically plausible range: above 150 degrees Fahrenheit or below negative 58 degrees Fahrenheit. These extreme readings typically mean the sensor element has drifted out of specification or has an open circuit internally, rather than an actual temperature extreme inside the freezer. Diagnosing this code requires checking wiring continuity, connector seating, and thermistor resistance at the sensor terminals.

Source: manufacturer service documentation.

Common causes of F5

  1. 01

    Failed or out-of-range thermistor

    Part replacement

    The freezer thermistor itself has failed and is reporting a temperature above 150°F or below -58°F, or no signal at all. This is the most frequent cause and is confirmed by measuring the resistance at the sensor terminals and comparing to the expected value for the current freezer temperature.

  2. 02

    Loose or corroded connector

    Wiring / connection

    The wiring harness connector at the thermistor or at the control board has become unseated, corroded, or moisture-damaged, creating a contact failure. Inspect each connector in the sensor circuit for discoloration, bent pins, or a connector that is not fully clicked into place.

  3. 03

    Cut or damaged wiring harness

    Wiring / connection

    A wire in the freezer sensor circuit has been cut, pinched, or abraded, breaking the signal path to the control board. This can happen during a previous repair or from chafing against a sharp metal edge inside the cabinet.

  4. 04

    Short circuit in the sensor wiring

    Wiring / connection

    Two wires in the thermistor circuit are contacting each other or a grounded surface, producing an abnormal resistance reading at the control board. A continuity meter can help isolate which section of the harness is affected.

  5. 05

    Missing or incorrectly installed sensor

    Part replacement

    The freezer compartment sensor is absent or was not seated in its mounting clip correctly, causing the control board to read no signal. This is more common after a prior interior repair such as evaporator or ice maker service.

See the test procedure for each cause

Frequently asked questions about F5

What does F5 mean on a Samsung refrigerator?
F5 on a Samsung refrigerator indicates a freezer compartment sensor error. The control board has detected a problem with the thermistor circuit due to a wire cut, short circuit, contact failure, or missing sensor. The code also triggers when the sensor reports a temperature above 150°F or below -58°F, which points to a sensor that has drifted out of its valid operating range. The freezer may not maintain correct temperatures until the fault is corrected.
Can I fix a Samsung refrigerator F5 error myself?
Some causes of the F5 code are DIY-friendly. You can inspect and reseat wiring connectors at the freezer thermistor and control board without special tools. If the wiring and connectors check out, testing the thermistor resistance with a multimeter is the next step. Replacing the thermistor is a moderate repair that many technicians and experienced DIYers can complete, but if the fault is in the main control board or involves complex wiring repair, a qualified technician is recommended.
Is it safe to use my refrigerator while it shows F5?
The refrigerator may continue to run with an F5 code, but without reliable sensor feedback the control board cannot accurately regulate freezer temperature. Food safety is at risk if the freezer is not maintaining proper temperatures. Check the actual freezer temperature with a separate thermometer and avoid storing perishables until the sensor fault is resolved.
Will resetting my Samsung refrigerator clear the F5 error?
A power reset by unplugging the unit for a few minutes may temporarily clear the F5 code, but the error will return if the underlying wiring or sensor fault is still present. A reset should be treated as a diagnostic step to confirm whether the fault is intermittent, not as a permanent fix. The sensor circuit must be inspected and the root cause corrected to eliminate the code.
How much does it cost to repair a Samsung refrigerator F5 error?
Repair costs depend on the specific cause. A replacement freezer thermistor typically costs between $15 and $50 for the part alone. If professional labor is needed, a service call plus repair time can bring the total to a range of $100 to $250 or more depending on your location and the technician's rates. Wiring harness repairs or control board replacement will fall toward the higher end of that range.

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