E18
Sharp Exhaust Fan Motor / Control Error

Microwave displays E18 and the exhaust (range hood) fan does not operate (over-the-range models).

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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 exhaust fan motor, Jammed blower wheel, Faulty fan speed switch or keypad, Wiring fault between fan and control board

How to Fix / Troubleshooting

Safety: Unplug the microwave. Over-the-range units are heavy; do not attempt to remove the unit from the wall without assistance.

Steps:

  • 1. Check fan settings: Try all fan speeds from the control panel. Listen for any attempt to start.
  • 2. Filter and airflow: Remove and clean the grease filters. Ensure the exhaust path is not blocked.
  • 3. Access blower (advanced): Remove the top grille and, if necessary, the control panel to access the exhaust fan assembly. Inspect the blower wheel for obstructions.
  • 4. Electrical test: Test the exhaust fan motor for continuity and check wiring connections.

Repair: Replace the exhaust fan motor or blower assembly with Sharp-approved parts if defective. If the motor is good but not receiving power, the control board or fan switch may need replacement.

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Repair Difficulty

Hard 4/5

Required Part

Exhaust Fan Motor
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