Liebherr Refrigerator Error BT021

⚡ Quick Answer: The Liebherr refrigerator error BT021 indicates a fault with the evaporator sensor, leading to irregular temperatures in the refrigerator compartment ... ✅ DIY Fixable

What Does Error BT021 Mean?

The Liebherr refrigerator error BT021 indicates a fault with the evaporator sensor, leading to irregular temperatures in the refrigerator compartment and often accompanied by unusual humming sounds. This can result in compromised cooling performance, necessitating attention to restore normal operation.

Common Symptoms:

  • Error BT021 displayed on control panel
  • Possible irregular refrigerator compartment temperatures
  • Cooling performance may be affected

Possible Causes

  • Faulty refrigerator compartment evaporator sensor (medium)
  • Wiring/connectivity issue related to evaporator sensor (low)

How to Fix Error BT021

DIY Fix Basic checks before service call

  1. Ensure door seals close properly and no warm air ingress is occurring.
  2. Observe if temperature irregularities are present along with the BT021 code.

Technician Only Diagnose and repair sensor circuit

  1. Disconnect power to the refrigerator.
  2. Access the refrigerator compartment evaporator sensor and inspect wiring harness and connectors for damage or looseness.
  3. Test sensor resistance/operation with appropriate tools per service manual specifications.
  4. Replace defective evaporator sensor and verify correct operation.
  5. Check related wiring harness and connectors for continuity and repair if needed.
  6. Clear the error code and confirm normal temperature regulation.

Parts needed: Refrigerator compartment evaporator temperature sensor, Connector/wiring harness as necessary

🛑 When to Call a Pro:
  • If error persists after basic checks and power cycling
  • If you are unfamiliar with appliance diagnostics or lack appropriate tools

Technical Specifications

wattage 150W
component Compressor
resistance 1-5 ohms
part_number Liebherr 741-0001-00
voltage_rating 220-240V AC

Common Questions

What does BT021 error mean on Liebherr refrigerator?

BT021 indicates a fault with the evaporator sensor, resulting in irregular temperatures and reduced cooling.

Can I fix Liebherr refrigerator BT021 error myself?

Yes, you can check door seals and observe for temperature irregularities before calling for service.

How much does it cost to fix BT021 error?

Repair costs vary by region but typically include sensor replacement and labor.

When should I call a technician for BT021?

Call a technician if the error persists after basic checks or if you're unfamiliar with diagnostics.

Sources & References

Data last verified: 2026-04-23

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