Display shows E9; ice buildup or temperature swings may be present.

Safety first: Unplug the freezer before accessing internal components. Avoid using sharp tools on ice.

• Manual defrost: Thaw the freezer completely to restore airflow and cooling temporarily.
• Inspect defrost components: Access the evaporator area and visually inspect the defrost heater, defrost thermostat, and wiring for signs of overheating or loose connections.
• Wiggle test: Gently move wiring harnesses while checking continuity with a multimeter to locate intermittent opens.
• Replace suspect parts: If any component shows signs of damage or intermittent readings, replace it. If all parts test good, the electronic control board may be mismanaging defrost cycles.