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Samsung Hood Error Code E-25

Abnormal temperature sensed during Micro Cook mode.

Samsung codesSamsung hood codes

Abnormal temperature sensed during Micro Cook mode.

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What E-25 means on a Samsung hood

The E-25 error code on a Samsung hood indicates that an abnormal temperature condition has been detected during Micro Cook mode operation. This mode involves the magnetron and its associated thermal management components, meaning the error points directly to the microwave cooking system rather than the ventilation functions of the hood. The control board monitors temperature via a thermal sensor or thermostat positioned near the magnetron or cavity, and when readings fall outside the acceptable operating range, either too high or too low, the E-25 fault is triggered and cooking operation is halted.

The most common cause of this error is overheating within the microwave cavity or around the magnetron itself. This can result from blocked ventilation pathways, a failing cooling fan, or a defective thermal cutout or thermistor that is sending incorrect readings to the control board. Extended cooking cycles, heavy grease buildup obstructing airflow, or operating the unit in an environment with already elevated ambient temperatures can all push the thermal sensor beyond its normal threshold.

Because this code is tied to temperature sensing rather than a simple mechanical failure, diagnosis typically requires checking the condition and continuity of the thermal sensor or thermostat, verifying that the cooling fan operates correctly during Micro Cook mode, and confirming that airflow through the unit is unobstructed. If the sensor or thermal cutout has failed, it will need to be replaced before normal operation can resume. Continued use while this error is active is not advisable, as genuine overheating can damage the magnetron.

Source: manufacturer service documentation.

Common causes of E-25

  1. 01

    Failed or faulty thermal sensor or thermistor

    Part replacement

    The thermistor or thermal sensor monitoring the microwave cavity can fail and send incorrect temperature readings to the control board, triggering E-25 even when no actual overheating is present. Checking the sensor for proper resistance values and continuity will help identify this fault.

  2. 02

    Thermal cutout tripped or defective

    Part replacement

    A thermal cutout, sometimes called a thermal fuse, protects the magnetron by cutting the circuit if temperatures exceed a safe limit. If this component has tripped or failed open, it will cause the control board to register an abnormal temperature condition.

  3. 03

    Cooling fan not operating correctly

    Part replacement

    The magnetron cooling fan must run during Micro Cook mode to keep internal temperatures within range. If the fan motor is failing, seized, or obstructed, heat builds up rapidly and trips the thermal protection, resulting in the E-25 code.

  4. 04

    Blocked ventilation or grease buildup

    Wiring / connection

    Heavy grease accumulation in the filters or around ventilation openings can restrict airflow through the unit, causing the internal temperature to rise abnormally during cooking cycles. Cleaning the filters and inspecting all air passages is a good first step.

  5. 05

    Faulty control board

    Part replacement

    If the thermal sensor, cutout, and fan all test within normal parameters, the control board itself may be misinterpreting sensor signals or generating a false E-25 fault. Control board replacement is typically a last resort after other components have been ruled out.

See the test procedure for each cause

Frequently asked questions about E-25

What does E-25 mean on a Samsung hood?
E-25 on a Samsung hood indicates that an abnormal temperature was detected during Micro Cook mode. The appliance monitors internal temperature through a thermal sensor or thermistor while the microwave cooking function is active, and this code appears when the reading falls outside the acceptable range. The unit stops the cooking cycle automatically to prevent potential damage to the magnetron or other internal components.
Can I fix the E-25 error myself?
Some steps are DIY-friendly, such as cleaning clogged grease filters and checking that ventilation openings are clear. However, testing and replacing components like the thermistor, thermal cutout, or cooling fan involves working near high-voltage microwave circuitry, which carries serious safety risks. If you are not experienced with appliance repair and high-voltage systems, professional service is the safer choice.
Is it safe to keep using my Samsung hood while E-25 is displayed?
You should not continue using the Micro Cook function while the E-25 error is active. The code indicates a temperature problem that, if caused by genuine overheating, could damage the magnetron or create a safety hazard with continued use. The ventilation fan functions of the hood may still be usable, but the microwave cooking feature should remain off until the fault is diagnosed and corrected.
How much does it cost to repair a Samsung hood showing E-25?
Repair costs vary depending on which component has failed. Replacing a thermistor or thermal cutout is generally a lower-cost repair, often ranging from around $75 to $200 including labor. A cooling fan motor replacement may cost somewhat more, and a control board replacement typically falls in the higher range of $150 to $400 or above. Getting a diagnostic estimate from a qualified technician before committing to parts is a practical approach.
Will resetting the Samsung hood clear the E-25 error?
A power reset, done by unplugging the unit or switching off its circuit breaker for a few minutes, may temporarily clear the E-25 display. However, if an underlying fault exists in the thermal sensor, thermal cutout, or cooling fan, the error will return when Micro Cook mode is used again. A reset is a useful first step to determine whether the fault is intermittent, but it does not fix a hardware problem.

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