Display shows "dF" or similar; unit may pause cooling periodically.

Safety: No immediate safety risk; this is usually informational.

Steps:

• Wait cycle out: Allow 20–40 minutes for the defrost cycle to complete. The code should clear automatically and cooling should resume.
• Check for ice buildup: If the code remains for hours and cooling does not resume, unplug the unit and inspect the evaporator for heavy ice. Defrost manually if needed.
• Sensor check: Test the defrost/evaporator sensor. A faulty sensor can cause the board to remain in defrost.
• Control board: If the sensor is good but the unit remains stuck in defrost, replace the main control PCB.