F8
Midea Steam / Humidity Sensor Calibration Error

Microwave shows F8; sensor cooking and auto functions may not work.

Advertisements

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.

Advertisements

Possible Causes

Out-of-range humidity sensor, Sensor contamination, Incorrect sensor calibration, Faulty control board sensor processing

How to Fix / Troubleshooting

Safety first: Unplug the microwave before cleaning internal surfaces.

Step-by-step checks:

  • 1. Clean cavity thoroughly: Grease and residue can affect sensor readings. Clean the interior walls, ceiling, and especially the area around the sensor grille with mild detergent and water. Dry completely.
  • 2. Reset unit: Unplug for 5 minutes, then plug back in. Some models recalibrate the sensor at power-up.
  • 3. Run a sensor test (if available): Follow the manual to run any built-in sensor test or calibration program.
  • 4. Replace sensor: If F8 persists, replace the humidity/steam sensor with an OEM Midea part.
  • 5. Control board replacement: If a new sensor does not resolve F8, the control board may be defective.
Advertisements

Repair Difficulty

Medium 3/5

Required Part

Humidity / Steam Sensor for Midea Microwave
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements