Microwave stops mid-cycle and displays E05; may beep repeatedly and require unplugging to clear.

Safety first: Unplug the microwave and allow it to cool for at least 30 minutes before inspection.

Step-by-step checks:

• 1. Allow cooling: If you have been cooking for an extended period, let the unit cool completely, then try a short test run.
• 2. Check ventilation: Ensure there is adequate clearance around the microwave and that cabinet cutouts (for built-in Paderno models) are not blocked.
• 3. Inspect vents: Look for grease, dust, or plastic wrap blocking the vents. Clean gently with a soft brush or vacuum.
• 4. Access cavity thermostat: With the unit unplugged and cover removed, locate the cavity thermostat or thermal sensor mounted on the top or side of the cooking cavity.
• 5. Test thermostat/sensor: Use a multimeter to check continuity (for a thermostat) or resistance (for a thermistor-type sensor). An open thermostat at room temperature is faulty.
• 6. Replace faulty sensor: If the thermostat or sensor is defective, replace it with a Paderno-compatible cavity thermostat/temperature sensor.