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 completely and disconnect power before any inspection.

Steps to try:

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

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