Microwave shows E07 and will not start; fan may run briefly then stop.

Safety first: Unplug the microwave before inspection. Do not insert tools into vents while the unit is plugged in.

Steps to address E07:

• 1. Check external vents: Inspect side, rear, and top vents for dust buildup, plastic bags, or cabinet trim blocking airflow. Clean with a soft brush or vacuum.
• 2. Verify installation: Ensure the microwave is not built into a cabinet without proper ventilation clearances specified by Toshiba.
• 3. Listen for fan operation: Plug the unit back in and start a short cycle. Listen for the internal cooling fan. If you hear no fan noise before E07 appears, the fan motor or its power supply may be faulty.
• 4. Power reset: Unplug for 10 minutes, then retry. If E07 appears immediately, the control board may not be detecting fan feedback.
• 5. Internal inspection (technician): Access the fan assembly, check for obstructions (e.g., insulation, wiring touching the blades), and test the fan motor for continuity and proper voltage.

Next step: If cleaning vents and ensuring clearance do not resolve the error, schedule service to replace the cooling fan motor or repair the control PCB.