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Error code reference

Samsung Range Error Code bs

IGBT (Insulated Gate Bipolar Transistor) sensor short (low resistance) error on inverter board.

Samsung codesSamsung range codes

IGBT (Insulated Gate Bipolar Transistor) sensor short (low resistance) error on inverter board.

First step from the service manual

If top sensor resistance matches chart and wiring is OK, replace Ass'y Inverter Module PCB.

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

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  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
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What bs means on a Samsung range

The BS error code on a Samsung range indicates an IGBT (Insulated Gate Bipolar Transistor) sensor short error detected on the inverter board. The IGBT is a critical power switching component within the inverter module PCB that controls the high-frequency current delivered to the induction cooktop elements. A sensor short condition means the control system has detected abnormally low resistance at the IGBT sensor circuit, which signals that the transistor or its associated sensing circuitry may be shorted or degraded. This type of fault prevents normal induction operation and triggers the error to protect downstream components from damage caused by uncontrolled current flow.

The inverter module PCB houses the IGBT along with its gate driver circuitry, thermal sensors, and supporting passive components. When the sensor resistance reading falls below the expected threshold defined in the resistance chart for the top sensor, the board's protection logic immediately flags the BS fault. This can result from an internal short within the IGBT itself, a failure in the sensing resistor network on the board, or wiring and connector issues between the sensor and the inverter module. Heat stress, moisture ingress, and power surge events are common contributing factors to IGBT degradation over time.

Diagnosing this fault requires measuring the top sensor resistance and comparing it against the specification chart. If the resistance reading is within the acceptable range and all wiring connections are secure and undamaged, the inverter module PCB itself is the likely failed component and should be replaced. This board-level failure is generally not field-repairable beyond replacement of the full inverter module assembly.

Source: manufacturer service documentation.

Common causes of bs

  1. 01

    Failed IGBT on inverter module PCB

    Part replacement

    The IGBT transistor on the inverter board may have developed an internal short, causing the sensor resistance to read abnormally low. This is the most common root cause when wiring and sensor resistance check out within spec.

  2. 02

    Shorted or damaged sensor resistor network

    Part replacement

    Passive components in the IGBT sensor circuit on the inverter PCB can fail or short due to heat stress or power surges, producing a false low-resistance reading. Visual inspection of the board for burned or cracked components may help identify this.

  3. 03

    Wiring harness damage or connector fault

    Wiring / connection

    A pinched, burned, or corroded wire in the harness connecting the top sensor to the inverter module can create a short-circuit path. Inspect the full length of the wiring and all connector pins for damage, corrosion, or improper seating.

  4. 04

    Moisture or contamination on the inverter board

    Part replacement

    Liquid or grease ingress onto the inverter module PCB can create conductive paths between sensor circuit traces, resulting in a low-resistance short condition. Check the board surface for any signs of contamination or corrosion.

  5. 05

    Heat-related degradation of the IGBT

    Part replacement

    Prolonged exposure to high operating temperatures, particularly if the cooktop ventilation is restricted, can degrade the IGBT over time and cause it to develop internal shorts. Ensure the unit's cooling vents are clear of obstructions.

See the test procedure for each cause

Frequently asked questions about bs

What does bs mean on a Samsung range?
The BS error code on a Samsung range indicates an IGBT sensor short error on the inverter module PCB. The IGBT is a power transistor that controls current to the induction cooktop elements. The error is triggered when the sensor circuit registers abnormally low resistance, suggesting a short condition within the transistor or its associated circuitry. This fault is designed to protect the range from damage caused by uncontrolled current.
Can I fix the BS error on my Samsung range myself?
A knowledgeable DIYer can start by checking the top sensor resistance against the specification chart and inspecting the wiring harness and connectors for damage. If the resistance is within spec and the wiring looks good, the inverter module PCB will need to be replaced, which is a more involved repair requiring comfort with high-voltage components. If you are not experienced with appliance electronics, professional service is recommended.
Is it safe to use my Samsung range while the BS error code is displayed?
You should avoid using the affected induction cooktop zones while the BS error is active. The error indicates a fault in the inverter's power switching circuit, and continued operation could risk further damage to the inverter module or other electrical components. The oven function may still be operable depending on the model, but the induction surface should not be used until the fault is resolved.
Will resetting my Samsung range clear the BS error code?
A power reset by unplugging the range or tripping the circuit breaker for a few minutes may temporarily clear the error display, but it will not resolve the underlying hardware fault. If the IGBT or inverter PCB is genuinely shorted or damaged, the BS code will return as soon as the control system runs its diagnostic check. A proper repair or component replacement is required for a permanent fix.
How much does it cost to repair a Samsung range BS error code?
Repair costs depend on whether the fix involves a wiring correction or a full inverter module PCB replacement. Wiring repairs on the lower end of the cost spectrum may run in the range of $75 to $150 in labor. An inverter module PCB replacement, including parts and labor, typically falls in the range of $200 to $450 depending on the model and service provider. Getting a diagnosis from a certified technician before purchasing parts is advisable.

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