Display shows E17 and the refrigerator compartment may freeze food even at normal settings.

Safety warning: Disconnect power before accessing internal air ducts or damper assemblies.

Steps:

• 1. Check temperature settings: Ensure the fridge setpoint is not accidentally set too low. Adjust to a mid-range setting and monitor.
• 2. Locate the air damper: On many IceKing models, the damper is located at the top or rear of the fridge compartment, behind a plastic grille.
• 3. Inspect damper operation: Remove the cover and observe the damper door while the unit is running (briefly reconnect power if necessary, keeping hands clear). If the door remains fully open, the damper may be stuck or the motor failed.
• 4. Check for ice blockage: Ice can jam the damper door. If present, unplug the unit and allow the area to defrost. Do not force the door with tools.
• 5. Test damper motor: With power disconnected, unplug the damper and measure coil resistance. An open circuit indicates a failed motor. Replace the damper assembly if defective.
• 6. Sensor and PCB: Verify the fridge NTC sensor is reading correctly (see E1). If both sensor and damper are good, the main PCB may be miscontrolling the damper and require replacement.

Note: After replacing the damper, reassemble all ducting to ensure proper airflow.