Display shows E9 and the refrigerator may not cool properly or may shut down unexpectedly.

Safety first: Unplug the refrigerator before cleaning coils or working near the compressor.

Steps:

• Check installation: Ensure there is adequate clearance around the refrigerator (typically at least 2 inches at the back and sides) for proper airflow.
• Clean condenser coils: Remove the rear lower access panel. Use a coil brush and vacuum to remove dust and lint from the condenser coils. Dirty coils cause overheating and poor cooling.
• Verify condenser fan operation: With power restored, observe whether the condenser fan runs when the compressor is on. If not, follow the condenser fan motor troubleshooting steps (see E7 scenario).
• Ambient temperature: Ensure the unit is not installed in a very hot environment (e.g., unventilated garage in summer) beyond its rated operating range.
• Reset: After cleaning and ensuring proper airflow, unplug the unit for 5 minutes, then restore power. Monitor for recurrence of E9.

If E9 persists: The main control board or internal temperature protection circuitry may be faulty and should be evaluated by a technician.