Wine cooler displays E8 and the compressor or Peltier module does not start or shuts off quickly.

Safety first: Unplug the cooler. Compressor and power circuits carry mains voltage; if you are not experienced with electrical testing, contact a technician.

Steps to address E8:

• 1. Listen for start attempts: Plug in briefly and listen. A clicking sound every few seconds may indicate the compressor is trying to start but failing.
• 2. Check ventilation: Ensure the rear and sides have proper clearance and the condenser coils are clean. Overheating can cause protection circuits to trip.
• 3. Inspect control board and relay: With power disconnected, remove the rear cover to access the main board. Look for burnt relay contacts or charred areas.
• 4. Test compressor windings (compressor models): Disconnect the compressor start device and measure resistance between the three compressor pins. Values should be finite and consistent with manufacturer specs. A short to ground or open winding indicates a bad compressor.
• 5. Test Peltier module (thermoelectric models): Disconnect the Peltier module leads and measure resistance; a dead short or open circuit indicates a failed module.
• 6. Replace failed component: Replace the compressor start relay/overload, Peltier module, or main control board as indicated by tests. Compressor replacement should be done only by a licensed refrigeration technician.

Warning: Do not bypass safety devices or relays; this can cause fire or further damage.