Thermador Refrigerator E05 Error: Refrigerator Evaporator Sensor
Thermador refrigerator E05 error indicates refrigerator evaporator sensor. Stop using the appliance and call a Thermador-certified technician immediately for diagnosis. What Does Thermador Refrigerator Error Code E05 Mean? The E05 error code on a Thermador Freedom Collection refrigerator or built-in column indicates the refrigerator evaporator temperature sensor is reporting a fault. This sensor is mounted […]
Quick Assessment
Answer to continue safely
Is it safe to keep using?
Maybe. You can continue using the refrigerator briefly while you arrange service, but expect gradual warming and frost buildup. Move highly perishable items to a backup unit if the temperature begins climbing.
Can I reset the code?
Yes. A breaker reset and manual defrost can clear E05 if the sensor was jammed by ice. If the sensor has electrically failed, E05 returns within hours.
When to stop immediately?
Stop if you notice: Refrigerator temperature exceeds 45°F, Continuous ice sheet forms on the back wall.
Symptoms You May Notice
Frost buildup on the back wall of the refrigerator section
A layer of frost or ice forms on the inside back wall where the evaporator panel is located.
Refrigerator runs cold initially then gradually warms
The compartment maintains temperature for several hours then slowly warms because the defrost cycle is not running properly.
Hissing or dripping sounds from behind the rear panel
Unusual noises from the evaporator area as the defrost cycle behaves erratically.
Possible Causes
Failed evaporator sensor
The temperature sensor mounted on the refrigerator evaporator coil has failed open or shorted.
Requires ProfessionalSensor harness damaged behind the rear panel
The harness has been damaged by frost buildup, ice accumulation, or recent service work behind the back wall.
Requires ProfessionalFailed input on the main control board
The dedicated evaporator sensor input on the main board has failed, often after age-related component degradation.
Requires ProfessionalSafe Checks You Can Do
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1
Allow a manual defrost
Switch the breaker off for 8 hours with the doors propped open and a towel on the floor to catch any water. Then restore power.
Manually defrosting clears any ice that may be physically jamming the sensor against the evaporator. Some E05 errors clear after a complete thaw.
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2
Check for visible frost on the rear panel
Open the refrigerator and look at the inside back wall. Heavy frost buildup along the rear panel signals defrost failure related to the sensor fault.
A thin layer of frost is normal during heavy use, but a continuous sheet of ice indicates the defrost system is not running.
When to Call a Professional
Contact a qualified technician if:
- Sensor reads outside expected resistance after defrost
- Visible damage to the evaporator coil or sensor wires
- Multiple E0X codes appearing simultaneously
Need Professional Help?
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