Microwave runs but does not heat food; turntable and light operate normally, no error code displayed.
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Possible Causes
How to Fix / Troubleshooting
Critical safety warning: The high-voltage section of a microwave can be lethal. Do not attempt to test or replace magnetron, transformer, capacitor, or diode unless you are trained and equipped to safely discharge the capacitor.
User-level checks:
- Load test: Place a cup of water in the oven and run on full power for 1–2 minutes. If the water remains cold, the unit is not heating.
- Listen for abnormal sounds: A loud humming, buzzing, or arcing sound may indicate a failing high-voltage component. If heard, stop using the microwave and unplug it.
Technician-level diagnostics:
- Test the magnetron for filament continuity and shorts to ground.
- Check the high-voltage diode and capacitor with appropriate test equipment.
- On transformer models, test the HV transformer windings; on inverter models, test the inverter board outputs.
- Inspect wiring and connectors in the high-voltage circuit.
Due to the danger involved, most users should contact an authorized Electrolux service technician for no-heat conditions.