Built-in Siemens microwave with hot air function shows E07 and stops heating.

Safety warning: Internal fans and heaters can remain hot after use. Allow the appliance to cool and disconnect power before any inspection.

Steps to try:

• 1. Cool and reset: Let the unit cool for 30–60 minutes with the door open, then disconnect and reconnect power to clear temporary faults.
• 2. Listen for fan operation: Start a hot air or combination program and listen through the door. You should hear the convection fan running. If E07 appears and no fan noise is heard, the fan may be defective.
• 3. Check for obstructions: Ensure no foil, trays, or large dishes are blocking the rear or side air outlets inside the cavity.
• 4. Clean air inlets: Vacuum or brush dust from external vents to improve airflow.
• 5. Technician-level: Access the convection fan assembly, test the fan motor for continuity, and check the hot air NTC sensor. Replace the convection fan motor or sensor if faulty.

Persistent E07 errors require professional service to avoid overheating and damage to the cabinet.