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Samsung Ovens & Ranges2020–present

Error Code TCO Open

Thermal Cutoff Device Open

Moderate

Address soon - your appliance may not work properly

What This Means

Excessive temperature rise; Main power loss during operation causing temporary temperature spike; Defective TCO device; Sensor malfunction; Motor or fan failure

How to Fix

  1. 1

    Replace TCO device

  2. 2

    Check wire short and sensor operation

  3. 3

    Check cooling motor and convection motor operation

  4. 4

    Verify motor connector is properly connected

  5. 5

    Check motor resistance: Cooling motor 238Ω, Convection motor 218Ω

  6. 6

    Check motor terminal voltage

  7. 7

    Check PCB SMPS input voltage (5V, 230V)

  8. 8

    Check PCB SMPS output voltage (5V, 12V)

  9. 9

    Check PCB relay contact for short

  10. 10

    Replace motor if resistance and voltage checks fail

  11. 11

    Replace PCB if all other components are functional

This Error Applies To

Samsung NV75N7546R Series Ovens & Ranges (2020) (2020–present)

Service manual exact match: NV31T4551SS/AAService manual exact match: NV75N7546RBService manual exact match: NV75N7646RBService manual exact match: NV75N7646RSService manual exact match: NV75N7546RSService manual exact match: NV31T4551SSService manual exact match: NV75N7626RB

Related Error Codes

C-21

Internal Oven Temperature Abnormal Error

C-F0

Communication Problem

C-d0

Key Short Code

C-20

Oven Sensor Malfunction

S-01

Over Time Code / Safety Shutoff

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