Microwave runs but does not heat; 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
Safety Warning: The high-voltage system is extremely dangerous. Do not attempt to service magnetron, capacitor, transformer, or diode unless you are trained.
User-level confirmation:
- 1. Heat test: Place a cup of water in the oven and run on HIGH for 2 minutes. If the turntable rotates and the light is on but the water remains cold, the unit is not heating.
- 2. Listen and smell: Note any unusual buzzing, arcing sounds, or burning smells. If present, unplug immediately.
Non-heating with normal operation almost always requires professional service to test and replace high-voltage components. Continued use can be hazardous.