Microwave displays E10 and may shut down; often appears after long cooking times on built-in Privileg models.

Safety first: Unplug the microwave and allow it to cool completely before inspection.

Step-by-step checks:

• 1. Verify installation clearances: For built-in Privileg microwaves, ensure the cabinet cut-out and trim kit follow the installation manual. Blocked exhaust paths can cause overheating and E10.
• 2. Clean ventilation paths: Remove the trim kit and vacuum dust from intake and exhaust openings. Clean any accessible grease filters.
• 3. Listen for the cooling fan: During operation, you should hear a fan running. If the fan is silent or very noisy, it may be failing.
• 4. Access the cooling fan: Remove the outer cabinet. Locate the cavity cooling fan (often a tangential or axial fan near the top or side). Check for obstructions and spin the blade by hand to ensure it moves freely.
• 5. Test the fan motor: Disconnect the fan and measure resistance. An open circuit indicates a failed motor. Replace with the correct Privileg fan assembly.
• 6. Check thermal cut-outs: Test any thermal cut-outs on the cavity or duct for continuity. Replace if open and not resettable.

Note: After replacing parts, clear the error by unplugging for several minutes, then test with a short cooking cycle.