E13
Siemens
Overtemperature Safety Cut-Out Activation
Microwave shows E13 and may shut down unexpectedly during operation.
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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
Tripped thermal cut-out on magnetron or cavity, blocked cooling airflow, failed cooling fan, defective thermal cut-out
How to Fix / Troubleshooting
Safety warning: Overtemperature conditions can damage components and pose a fire risk. Investigate ventilation before further use.
Steps to try:
- 1. Immediate action: Turn off the microwave, unplug it, and open the door to allow heat to escape.
- 2. Check installation: Verify that the built-in Siemens microwave has the correct clearances and ventilation openings as per the installation guide. Remove any obstructions.
- 3. Clean vents: Use a vacuum or brush to clear dust and grease from all external vents.
- 4. Reduce load: Avoid running the microwave empty or with very small loads on high power, as this can cause localized overheating.
- 5. After cooling: After at least 60 minutes, reconnect power and test a short, low-power cycle. If E13 reappears quickly, the thermal cut-out or cooling fan may be faulty.
- 6. Technician-level: Test continuity of thermal cut-outs, verify cooling fan operation, and replace any defective safety thermostat or fan motor.
Do not bypass thermal cut-outs; they are essential safety devices.
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Repair Difficulty
Hard
4/5
Required Part
Thermal Cut-Out (Magnetron/Cavity Thermostat)
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