Wine cooler shows E7 and interior lights or fans may behave erratically.

Safety: Always unplug the appliance before touching the control board or wiring.

Steps to attempt recovery:

• Hard reset: Unplug the wine cooler for at least 15 minutes to fully discharge the control board. Plug back in and observe if E7 clears.
• Check for surge damage: Inspect the main control board (usually located behind the rear panel or under the top cover) for burnt components, bulging capacitors, or scorch marks.
• Verify proper grounding: Ensure the outlet is grounded and the power cord is intact. Use a surge protector in the future to prevent recurrence.
• Reseat connectors: Disconnect and reconnect all harness plugs to the control board to ensure good contact.
• Replace the control board: If E7 persists and no other components test faulty, order a Frigidaire main control board for your exact model. Transfer any jumpers or programming plugs from the old board to the new one as instructed in the service documentation.

Warning: Board replacement involves handling static-sensitive electronics. If you are not comfortable with this, contact a professional technician.