JennAir Microwave Error Code E21
E21 on a JennAir microwave usually means: The Thermal Sensor circuit reported open to the control board. On a JennAir Microwave, code E21 points to the control board.
Fix it fast: Manufacturer troubleshooting steps. Full ranked steps below.
- Likely part
- control board
- Fault type
- communication
How to fix E21 — ranked steps
Try these in order. Stop when the code clears.
-
1 Manufacturer troubleshooting steps
DIY- Power unit down by turning off the circuit breaker(s) for one (1) minute.
- Power unit up by turning on the circuit breaker(s).
- Monitor the microwave for one (1) minute to ensure the error code does not display again.
- Verify microwave operation.
Frequently asked questions
What does JennAir Microwave error E21 mean?
The Thermal Sensor circuit reported open to the control board. On a JennAir Microwave, code E21 points to the control board.
Which part is usually at fault for JennAir error E21?
The most commonly implicated component is the control board.
What is the first thing to try for JennAir error E21?
Power unit down by turning off the circuit breaker(s) for one (1) minute. Power unit up by turning on the circuit breaker(s). Monitor the microwave for one (1) minute to ensure the error code does not display again. Verify microwave operation.
Other JennAir Microwave codes
The appliance could not connect to the router. On a JennAir Microwave, code FCE1 points to the control board.
The appliance could not connect to the router. On a JennAir Microwave, code FCE2 points to the control board.
The appliance could not connect to the router. On a JennAir Microwave, code FCE3 points to the control board.
The Keypad (User Interface) reported a problem to the control board. On a JennAir Microwave, code E03 points to the control board.
The Gas Sensor reported a problem to the control board. On a JennAir Microwave, code E11 points to the control board.
The Thermal Sensor circuit reported a short to the control board. On a JennAir Microwave, code E22 points to the control board.
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