F7
Daewoo Cooling Fan Feedback / Overheat Error

Microwave shows F7 and may shut down unexpectedly

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Failed cooling fan motor, Blocked fan blades, Faulty fan feedback sensor (if equipped), Open fan wiring

How to Fix / Troubleshooting

Safety first: Unplug the microwave before removing the cabinet.

Step-by-step checks:

  • 1. Listen for fan: During operation, you should hear the cooling fan. If it is silent or unusually loud, suspect a fan issue.
  • 2. Remove cabinet: Take off the outer cover to access the fan assembly, usually located near the magnetron and transformer.
  • 3. Inspect fan blades: Check for obstructions such as insulation, plastic, or debris. Remove any blockage.
  • 4. Test fan motor: Spin the fan by hand; it should rotate freely. Test the motor for continuity with a multimeter. Replace if open or seized.
  • 5. Check wiring: Ensure all connectors to the fan and any feedback sensor are secure and undamaged.

Note: Proper cooling is essential to prevent damage to the magnetron and inverter.

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Repair Difficulty

Medium 3/5

Required Part

Cooling Fan Motor
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