Microwave shows E5 and stops heating; fan and light may still operate.

Safety: Unplug the microwave before removing any covers.

Locate the humidity sensor:

• On many Magic Chef models, the humidity (steam) sensor is mounted inside the cavity near the top or side, behind a small grille or cover.
• Remove the inner cover (if present) to access the sensor.

Cleaning and inspection:

• Gently clean the sensor area with a soft cloth lightly dampened with mild detergent. Remove grease, food splatter, and smoke residue.
• Inspect the sensor body and wiring for corrosion, broken insulation, or loose connectors.
• Reseat the sensor connector on both the sensor and control board ends.

Testing and replacement:

• If E5 appears immediately on any sensor-based cooking mode (e.g., auto reheat, popcorn) after cleaning, the sensor is likely defective.
• Replace the humidity sensor with the exact Magic Chef part number specified for your model.
• If a new sensor does not resolve the error, the control board's sensor circuit may be faulty and the main control board may need replacement.

Tip: Until repaired, you can often still use manual time-and-power cooking modes if the control allows it and the error does not lock out all functions.