Wine cooler shows E13 and may exhibit erratic temperature control or random beeping.

Safety: Disconnect power before accessing the control board. Electronic components are sensitive to static; use ESD precautions if possible.

Steps:

• 1. Power reset: Unplug for 10–15 minutes to fully discharge capacitors, then reconnect. If E13 returns immediately, proceed.
• 2. Inspect wiring to board: Remove the control board cover and check all harness connectors for secure fit and signs of overheating.
• 3. Look for visible damage: Examine the board for burnt components, cracked solder joints, or corrosion. If present, the board must be replaced.
• 4. Replace main control board: Label and disconnect all connectors, remove mounting screws, and install the new Electrolux control board. Reconnect harnesses one by one, matching labels.

Note: If you are not comfortable handling electronic boards, have an authorized technician perform this repair.