E15
Blomberg
Humidity / Steam Sensor Fault
Microwave shows E15 and stops mid-cycle when using sensor cooking or auto programs.
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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
Contaminated humidity sensor,Failed humidity sensor,Loose sensor wiring,Control board sensor input failure
How to Fix / Troubleshooting
Safety: Unplug the microwave before accessing internal sensors.
User-level cleaning:
- 1. Clean cavity: Steam and food residue can coat the humidity sensor. Thoroughly clean the interior walls and ceiling with a mild detergent and soft cloth. Avoid harsh chemicals.
- 2. Dry the cavity: Leave the door open for several hours to ensure the sensor area is dry.
- 3. Test manual modes: Try heating on a manual power level. If manual modes work but sensor programs trigger E15, the humidity sensor is likely at fault.
Advanced steps:
- 4. Locate humidity sensor: It is usually mounted on the top or side of the cavity behind a small grille. Inspect for damage or loose connections.
- 5. Replace sensor: If cleaning and wiring checks do not resolve the issue, replace the humidity sensor according to Blomberg service instructions.
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Repair Difficulty
Medium
3/5
Required Part
Humidity Sensor
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