Microwave stops mid-cycle and completely shuts off; after a few minutes it may turn back on by itself.

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

• Check ventilation: Ensure there is adequate clearance around the Ambiano microwave (typically at least several centimeters on sides and top). Do not enclose it tightly in a cabinet unless designed for built-in use.
• Clean vents: Use a vacuum or soft brush to remove dust and grease from intake and exhaust vents.
• Inspect cooling fan: Remove the outer cover and verify the fan runs whenever the microwave is cooking. If it does not run or is very weak, replace the cooling fan motor.
• Thermal cut-out: If the unit repeatedly shuts down even with good airflow, the thermal cut-out or magnetron may be failing and should be tested and replaced by a technician.