Refrigerator display shows E0 and cooling performance is reduced or intermittent.

Safety first: Unplug the refrigerator before removing any panels. Use insulated tools and avoid touching live terminals.

Step-by-step checks:

• Power reset: Unplug the unit for 5–10 minutes, then plug back in. Sometimes E0 is a temporary control glitch that clears after a reboot.
• Check for obvious wiring issues: Pull the unit away from the wall. Remove the rear lower service panel. Inspect the main control board area for loose connectors, burnt spots, or damaged wires. Reseat any loose plugs firmly.
• Inspect interior sensor connections: Remove the interior light/thermostat cover (usually clipped or held by a couple of screws). Look for any disconnected or corroded sensor plugs and reconnect them.
• Monitor operation: After restoring power, allow 15–20 minutes. If E0 returns immediately, a sensor or the control board is likely faulty and should be tested with a multimeter according to the service manual.

When to call a technician: If you see burnt components on the board, or if the error returns after a reset and wiring check, professional diagnosis of the control board and sensors is recommended.