Refrigerator shows E15 and may not cool; compressor may not start or may short-cycle.

Safety first: Unplug the refrigerator. The compressor and related components operate at high voltage.

Steps to check:

• Listen for compressor: After restoring power, listen for the compressor attempting to start (clicking) and then shutting off. Frequent clicking suggests a start device issue.
• Inspect start device: Remove the rear access panel and locate the compressor start relay/overload or inverter module. Check for burnt smell or rattling parts inside the relay.
• Replace start relay (non-inverter models): If the relay is suspect, replace it with a Thermador-approved start device kit.
• Check wiring: Ensure all compressor and inverter connections are tight and undamaged.

Important: If the compressor draws high current, overheats, or fails to start even with a new start device, the compressor or inverter board may be defective. This requires specialized tools and should be handled by a certified refrigeration technician.