AEG Electrolux MICROMAT-143-EU user manual

There could be several reasons why your AEG microwave is not heating. Some possible causes and solutions include:
1. Faulty door switch: If the door switch is not working properly, it may not allow the microwave to start heating. Check if the door is closing properly and if the switch is damaged or misaligned. Replace the switch if necessary.
2. Malfunctioning magnetron: The magnetron is the component that generates microwave radiation for heating. If it is not functioning properly, the microwave will not heat. It may need to be replaced by a professional technician.
3. Defective high voltage diode: The high voltage diode converts the incoming electrical power into the appropriate voltage for the magnetron. If the diode is defective, it may prevent the microwave from heating. Test the diode using a multimeter and replace it if necessary.
4. Faulty capacitor: The capacitor stores electrical energy for the microwave's components. If it is defective, it may not provide enough power for heating. Test the capacitor with a multimeter and replace it if needed.
5. Burnt-out or faulty fuse: Microwaves have a fuse that protects the unit from power surges and electrical problems. If the fuse is blown, the microwave will not heat. Open the microwave's casing and check the fuse with a multimeter. Replace it if it is blown.
6. Control board issues: The control board manages the functions of the microwave, including heating. If it is malfunctioning, it may prevent the microwave from heating. Inspect the control board for any visible signs of damage and consider replacing it if necessary.
If you are unsure or unable to diagnose and fix the problem yourself, it is recommended to contact a professional technician or the manufacturer's customer service for assistance.