Wine cooler shows E15 and may shut down or run erratically after a power event.

Safety: Turn off the circuit breaker before inspecting the power connection. Only qualified persons should work on mains wiring.

Steps:

• 1. Verify supply voltage: Use a multimeter to confirm that the outlet or junction box provides the correct voltage specified on the rating plate (typically 220–240 V or 120 V depending on region).
• 2. Inspect power cord and plug: Check for damage, burns, or loose blades. Replace the cord if any defects are found.
• 3. Check terminal block (if hardwired): Ensure all screws are tight and there are no signs of arcing or overheating.
• 4. Power reset: After verifying connections, leave the unit powered off for 15 minutes, then restore power and see if E15 clears.
• 5. Inspect control board: If the error persists, access the main control and look for damaged MOVs, fuses, or other surge-protection components. Replace the board if necessary.
• 6. Consider surge protection: Install a quality surge protector or have an electrician evaluate the circuit if power issues are frequent.

Note: Persistent voltage problems should be addressed by a licensed electrician, not just by replacing appliance parts.