E10 displayed; unit may not cool and may show signs of frost buildup or no frost at all.
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Possible Causes
How to Fix / Troubleshooting
Critical safety: Sealed system repairs involve refrigerant and must be performed by an EPA-certified technician. Do not attempt to open the sealed system yourself.
Homeowner checks:
- Visual inspection: With power off, remove the interior rear panel and inspect the evaporator. A small frost patch only near the inlet or no frost at all while the compressor runs suggests a sealed system issue.
- Condenser temperature: Carefully feel (light touch) the condenser coils at the rear when the unit has been running. They should be warm. Completely cool coils may indicate a non-running compressor or no refrigerant.
- Noise and vibration: Listen for compressor operation. Clicking or humming without sustained running can indicate a compressor or start device problem.
- Rule out airflow issues: Ensure fans are running and coils are clean before concluding a sealed system fault.
Next step: If E10 persists and cooling is inadequate after basic checks, schedule service with an authorized Thermador technician for sealed system diagnosis and repair.