F3 error appears; unit may fill with water but not freeze properly.

Safety first: Unplug the unit before cleaning or accessing internal components. Do not attempt to open the sealed refrigeration system yourself.

Steps to troubleshoot:

• Clean condenser: Access and thoroughly clean the condenser coils with a brush and vacuum to improve heat rejection.
• Check condenser and evaporator fans: Ensure both fans (if equipped) run when the compressor is on. Replace any fan motor that does not start or is noisy.
• Verify ambient temperature: Ensure the unit is in a cool, ventilated area. High ambient temperatures can extend freeze times.
• Observe frost pattern: After running for 15–20 minutes, carefully inspect the evaporator. An uneven or partial frost pattern may indicate a sealed system issue.
• Reset and test: After cleaning and checks, reset power and monitor a full cycle. If F3 recurs, sealed system or compressor problems are likely.

When to call a technician: Low refrigerant, compressor failure, or sealed system restrictions must be handled by a licensed refrigeration technician.