Microwave stops heating shortly after start and displays E02 or similar overheating warning; internal fan may run loudly.

Safety first: Unplug the microwave. Internal components can be live and store high voltage. Do not touch the high-voltage section (transformer, capacitor, magnetron terminals).

Step-by-step checks:

• 1. Check external ventilation: Ensure the Privileg microwave has at least 10 cm clearance on sides and top. Remove any items blocking rear or side vents.
• 2. Clean vents and filters: For built-in models, remove the trim kit if fitted. Vacuum dust from intake and exhaust vents. If there is a removable grease filter (on combination/grill models), remove and wash it with hot soapy water, dry thoroughly, and reinstall.
• 3. Listen for the cooling fan: Plug in and start a short heating cycle with a cup of water. Listen at the side or rear for the cooling fan. If you do not hear a fan running, unplug and proceed.
• 4. Access the fan: Remove the outer cabinet. Locate the magnetron cooling fan (usually a small shaded-pole motor with a plastic or metal blade near the magnetron fins). Check for obstructions or broken blades.
• 5. Test the fan motor: Disconnect the fan motor connector and test for continuity with a multimeter. An open circuit indicates a failed motor that must be replaced.
• 6. Inspect thermal cut-outs: Locate the thermal cut-out (TCO) or thermostat mounted on the magnetron or cavity. Test for continuity; if open and not resettable, replace with the exact temperature-rated part.
• 7. Reassemble and test: After replacing faulty parts, reassemble the cabinet, ensure all covers and screws are in place (they are part of the safety shielding), then test with water for several minutes.

Warning: If the magnetron itself is overheating due to internal failure, it must be replaced by a professional due to radiation and high-voltage safety requirements.