Wine cooler shows E6 and may not cool; compressor may not start.

Critical safety warning: Work on the compressor and inverter area only with power disconnected. Do not attempt sealed system repairs (refrigerant handling) unless you are EPA-certified.

Steps:

• Listen for operation: After restoring power, listen for compressor start attempts or clicking. Then disconnect power again before proceeding.
• Access rear compartment: Remove the rear lower service panel to expose the compressor, inverter (if equipped), and control board.
• Check wiring: Inspect the harness from the main control to the inverter/compressor for loose plugs, damaged insulation, or burn marks. Reseat all connectors.
• Inverter module check: On inverter models, visually inspect the inverter board for burnt components. If damaged, replace the inverter module.
• Compressor test (basic): With power off and inverter disconnected, measure compressor winding resistance between pins. All windings should show similar, finite resistance and no continuity to ground. Abnormal readings suggest a failed compressor (requires professional replacement).
• Main control: If wiring and compressor/inverter appear normal, the main control board may not be sending proper signals and should be replaced.

When to call a technician: If E6 persists after checking connections, or if compressor or inverter failure is suspected, contact an authorized Thermador service provider.