Wine cooler does not cool at all; interior remains at room temperature despite display and lights working.

Safety first: Unplug the unit before removing panels. Sealed system repairs involve refrigerant and must be performed by a certified technician.

Basic checks you can perform:

• 1. Listen and feel: When powered, listen for the compressor humming and feel for slight vibration. Also check if the condenser coil warms up after 10–15 minutes.
• 2. Check fans: Ensure both internal and condenser fans run when cooling is demanded. Replace any non-functioning fan motors.
• 3. Frost pattern: After 20–30 minutes of operation, remove the interior rear panel and inspect the evaporator. A healthy system shows even frost across most of the coil. No frost or only a small patch indicates a sealed system issue.
• 4. Start components: Test and replace the compressor start relay/PTC and overload protector if the compressor does not start at all.
• 5. Call a professional: If the compressor runs but there is no cooling or only partial frost, a refrigerant leak, restriction, or internal compressor failure is likely. These require specialized tools and should be handled by an authorized Brandt service center.