Wine cooler not cooling at all; interior light works but temperature remains at room temperature.

Safety: Unplug the wine cooler before removing the rear panel. Sealed system work should be done only by certified technicians.

• Listen for compressor: With the unit plugged in and calling for cooling, listen at the back. If the compressor is silent and no vibration is felt, proceed with checks.
• Check start device and overload: Remove the start relay and overload from the compressor terminals. Inspect for burn marks or rattling components. Test for continuity; replace with a compatible Blomberg start device/overload if defective.
• Verify power to compressor: With extreme caution and using proper insulated probes, check for mains voltage at the compressor terminals when the unit should be cooling. If no voltage is present, the main PCB or wiring may be faulty.
• Control board: If the compressor and start components test good but never receive power, the main control board likely needs replacement.
• Compressor failure: If the compressor hums briefly then clicks off repeatedly even with a new start device, the compressor may be locked or internally damaged. Contact a professional for sealed system repair or replacement.