Siemens Refrigerator Error E20

⚡ Quick Answer: The Siemens Refrigerator E20 error indicates a defrost sensor failure, often resulting in elevated internal temperatures and an alarm tone. Users may ... ✅ DIY Fixable

What Does Error E20 Mean?

The Siemens Refrigerator E20 error indicates a defrost sensor failure, often resulting in elevated internal temperatures and an alarm tone. Users may notice an unresponsive control panel and inconsistent temperature displays. This error can stem from high internal temperatures, communication faults between control boards, or issues with the drainage and defrost systems.

Common Symptoms:

  • Display shows E20 code
  • Continuous alarm tone (in some models)
  • Elevated internal temperature / insufficient cooling
  • Control panel unresponsive in some reports
  • Complete shutdown reported in some cases

Possible Causes

  • High internal temperature (alarm condition) (medium)
  • Communication fault between control boards (medium)
  • Drainage / defrost system issue (low)

How to Fix Error E20

DIY Fix Basic user checks for high temperature alarm

  1. Ensure the refrigerator/freezer doors are fully closed and gaskets are sealing properly.
  2. Remove excess warm food and allow the appliance time to stabilize.
  3. Check if the internal temperature is abnormally high and listen for alarm tones.

Technician Only Inspect control boards and wiring

  1. Disconnect power and inspect wiring harnesses between the main control board and display/control module for loose connections or damage.
  2. Test communication signals with proper diagnostic tools per service manual.
  3. Replace faulty display or main control board if communication errors are confirmed.

Parts needed: Control board, Display/control module, Wiring harness

Technician Only Check drainage and defrost components

  1. Unplug and inspect drain hole and drain tube for blockages or ice buildup.
  2. Verify defrost heater and thermostat operation.
  3. Repair or replace defrost system components as needed.

Parts needed: Drain tube, Defrost heater, Defrost thermostat

🛑 When to Call a Pro:
  • If the E20 code persists after basic checks (door seal, temperature stabilization).
  • If you observe unresponsive control panels or suspected electronic faults.
  • If internal ice buildup or drain blockage cannot be cleared safely.

Technical Specifications

wattage
component Defrost Sensor
resistance 10-30 ohms
part_number Siemens 00612029
voltage_rating 120V AC

Common Questions

What does E20 error mean on Siemens Refrigerator?

E20 indicates a defrost sensor failure, leading to high temperatures and alarm sounds.

Can I fix Siemens Refrigerator E20 error myself?

Yes, check door seals, remove excess warm food, and allow 12-24 hours for stabilization.

How much does it cost to fix E20 error?

Repair costs for the E20 error typically range from medium to high.

When should I call a technician for E20?

Call a technician if the error persists after checks or if control panels are unresponsive.

Data last verified: 2026-01-25

User Comments (0)

Share your experience or solution below.

Be the first to comment!