E-21
Microwave temperature sensor open or short circuit
The microwave has detected an open-circuit or short-circuit condition in the temperature-sensor system.
What this code means
The microwave has detected an open-circuit or short-circuit condition in the temperature-sensor system.
Possible causes
- Temperature sensor fault
- Sensor wiring fault
- Internal electronic fault
Common symptoms
- E-21 displayed
- Microwave may stop or refuse normal operation
Checks to make
- Unplug the microwave
- Do not continue using it while the code remains
- Contact Samsung service for diagnosis
Safety
- Microwave ovens contain hazardous high-voltage components that can retain charge after unplugging. Internal repairs require qualified technicians.
Model notes
Samsung groups E-21 and E-22 with C-20 as temperature-sensor open/short codes.