Wine cooler shows E9 and interior light or fan may not operate correctly

Safety: Unplug the appliance before removing the rear cover or control housing. Capacitors on the PCB can retain charge briefly.

Steps to address E9:

• Check mains supply: Verify the wall socket is delivering stable voltage and that the plug and cord are not damaged.
• Inspect internal light: Remove or access the LED light module. Disconnect it and power the unit briefly to see if E9 clears, indicating a shorted light module.
• Check accessory loads: Similarly, disconnect non-essential loads (e.g., decorative LEDs, additional fans) one at a time to identify a shorted component.
• Inspect main PCB: Remove the PCB cover and look for burnt components, bulging capacitors, or darkened areas around the power supply section.
• Reseat connectors: Ensure all harnesses to the PCB are firmly seated and that earth/ground connections are secure.
• Replace faulty parts: If a specific accessory (light, fan) causes E9 when connected, replace that LED light module or fan. If the PCB itself is visibly damaged or E9 persists with all loads disconnected, replace the main control PCB.

Warning: Component-level repair of the PCB is not recommended for untrained users; replacing the entire board is safer.