Wine cooler displays E5 and may not maintain set temperature; compressor or fans may cycle abnormally.

Safety first: Always unplug the wine cooler before removing the control panel or board cover.

Steps to attempt recovery from E5:

• 1. Hard reset: Unplug the unit for at least 15 minutes to allow capacitors to discharge. Plug back in and check if E5 clears.
• 2. Verify power quality: Ensure the cooler is connected directly to a properly grounded outlet (no undersized extension cords). If your home has frequent surges, use a surge protector rated for appliances.
• 3. Inspect control board: Remove the control panel or rear electronics cover to access the main PCB. Look for burnt components, bulging capacitors, or corrosion on connectors.
• 4. Reseat connectors: Disconnect and reconnect all harnesses to the board, ensuring firm seating. Oxidized contacts can cause communication errors.
• 5. Replace control board: If E5 persists and sensors and wiring are known good, replace the main control board with a Vinotemp-specific board. Transfer any jumpers or configuration plugs exactly as on the original.

Important: Control board replacement involves handling static-sensitive electronics. If you are not comfortable with this, contact a qualified technician.