Code overview
Content status: Verified
- Error code
- E21
- Appliance
- Microwave
Over-the-range microwave E21: thermal sensor circuit reported open to the control board.
Model compatibility: Maytag reuses codes across series and model years, so E21 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
What this code means
E21
The Thermal Sensor circuit reported open to the control board.
What E21 reports
The thermal sensor circuit is open as far as the control board can tell. Maytag names three places to suspect: the thermal sensor, the appliance control board and the associated wiring.
Power reset checklist
- Breaker off for one (1) minute
- Breaker back on
- One (1) minute of monitoring
- Verify microwave operation
Next step
Persistent E21 means it is time to call for a technician.
Related codes
Arrange Microwave service
Service-center calls for a Maytag Microwave are answered on (844) 415-0954 across the Miami, New York, Houston, Los Angeles and San Diego metro areas. Have E21, the model number and a short list of your tries ready. Related: Microwave repair.
Source: E21 – Error Code – Over-the-Range Microwave – Maytag Product Help
Safety warning
Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Sources & references
Tell us what’s wrong — we’ll take it from there
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