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Error code reference

Samsung Range Error Code IGBT Sensor Short

IGBT sensor (Assy-Inverter Module) short error

Samsung codesSamsung range codes

IGBT sensor (Assy-Inverter Module) short error - A/D value falls under 10. Defective sensor, misplaced wires, or defective PCB.

First step from the service manual

Check if sub wire is connected from Assy-Inverter Module to Assy Touch PCB. Check sub wire sequence matches PCB schematic. Measure sensor resistance (good condition: 10K ohms at 25°C).

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

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What IGBT Sensor Short means on a Samsung range

The IGBT Sensor Short error on a Samsung induction range indicates that the analog-to-digital (A/D) conversion value from the IGBT temperature sensor has dropped below 10, which signals a short condition in the sensor circuit. IGBT stands for Insulated Gate Bipolar Transistor, and it is the core switching component inside the Assy-Inverter Module that drives the induction heating coils. The inverter module includes a dedicated NTC (negative temperature coefficient) thermistor sensor that monitors IGBT temperature in real time. Under normal operating conditions at 25 degrees Celsius, this sensor should read approximately 10K ohms. A reading significantly below this threshold indicates a short in the sensor or its associated circuit, prompting the control board to shut down and display this error.

The Assy-Inverter Module communicates with the Assy Touch PCB through a sub wire harness. If this sub wire is disconnected, routed incorrectly, or if the wire sequence does not match the PCB schematic, the sensor signal can be misread by the control board, producing a false short condition. This makes wiring integrity the first area to inspect before condemning any individual component. Physical damage to the wire insulation, loose connector pins, or a connector seated in the wrong orientation are all possible contributors.

If the wiring checks out, the fault points to either a defective IGBT temperature sensor within the inverter module or a defective PCB. Because the sensor is integrated into the Assy-Inverter Module assembly, a failed sensor typically requires replacing the entire inverter module. A shorted sensor will pull the A/D signal line low, preventing accurate temperature monitoring and making safe operation of the induction surface impossible until the fault is resolved.

Source: manufacturer service documentation.

Common causes of IGBT Sensor Short

  1. 01

    Disconnected or misrouted sub wire harness

    Wiring / connection

    The sub wire connecting the Assy-Inverter Module to the Assy Touch PCB may be unplugged, loose, or installed in the wrong sequence. Verify the connector is fully seated and that the wire sequence matches the PCB schematic.

  2. 02

    Defective IGBT temperature sensor

    Part replacement

    The NTC thermistor sensor inside the inverter module should measure approximately 10K ohms at 25 degrees Celsius. A reading far below this value confirms a shorted sensor, requiring replacement of the Assy-Inverter Module.

  3. 03

    Damaged sub wire harness

    Part replacement

    Physical damage to the sub wire insulation, such as pinching, burning, or a broken connector pin, can create a short to ground on the sensor signal line and trigger this error.

  4. 04

    Defective Assy Touch PCB

    Part replacement

    If the sub wiring and inverter module sensor both test correctly, the main or touch PCB may have a failed input circuit that incorrectly reads the sensor A/D value as below 10. The PCB would need to be replaced.

See the test procedure for each cause

Frequently asked questions about IGBT Sensor Short

What does IGBT Sensor Short mean on a Samsung range?
This error indicates that the temperature sensor monitoring the IGBT inside the induction inverter module has produced an analog-to-digital value below 10, which the control board interprets as a short circuit. The IGBT is the high-power switching component that drives induction heating, and its sensor must read around 10K ohms at 25 degrees Celsius to be considered functional. The range shuts down to prevent unmonitored overheating of this component. Possible causes include a loose wire harness, a shorted sensor, or a defective control board.
Can I fix the IGBT Sensor Short error myself?
A knowledgeable DIYer can start by inspecting and reseating the sub wire harness that runs between the Assy-Inverter Module and the Assy Touch PCB, checking that the wire sequence matches the schematic. If the wiring is intact, measuring the sensor resistance with a multimeter (expected value: 10K ohms at 25 degrees Celsius) will confirm whether the inverter module sensor is shorted. Replacing the inverter module or PCB involves working near high-voltage capacitors, so those steps are best handled by a qualified technician.
Is it safe to use my Samsung range while this error is displayed?
No, you should not attempt to operate the induction cooktop while this error is active. The error means the range cannot reliably monitor the temperature of the IGBT, which is a critical safety function. Continued use without a functioning temperature sensor could result in overheating and damage to the inverter module or other components.
Will resetting my Samsung range clear the IGBT Sensor Short error?
A power reset may temporarily clear the error display, but the fault will return as soon as the range runs a self-diagnostic cycle if the underlying hardware problem has not been fixed. Because the error is triggered by an out-of-range sensor resistance reading, clearing it requires correcting the wiring connection or replacing the defective component. A reset alone is not a repair.
How much does it cost to repair an IGBT Sensor Short error on a Samsung range?
Repair costs vary depending on the root cause. If only the sub wire harness needs reseating or replacement, costs are minimal, typically in the range of a service call fee plus a small parts cost. If the Assy-Inverter Module requires replacement, parts and labor combined can range from roughly 150 to 400 dollars or more depending on the model and local labor rates. A defective PCB replacement falls in a similar cost range.

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