JennAir JMV Code E24: overheat condition reached 500F

What E24 means

On JennAir over-the-range microwave hoods like the JMV9196CS and JMV8000 series, E24 reports that the oven reached an overheat condition of 500F (260C). The guidance names the thermal sensor, the gas sensor, the appliance control board and the wiring. The microwave stops and shows E24, and the unit housing may feel very hot to the touch. Please do not keep restarting it, because the heat condition may be real.

Common causes of E24

Thermal sensor reading is wrong or the sensor has failed
Gas sensor is sending a wrong signal
Wiring has a short or loose contact
Appliance control board is misjudging temperature

✓ One safe check you can try

1. Press Stop/Cancel, open the door and keep clear of the hot cavity. 2. If you see smoke or smell burning, turn off the breaker and keep the door shut. 3. Let it cool completely, about an hour. 4. Make sure no food or foil is inside. 5. Do not run it again until we have checked it.

! Why to stop there

An overheat message can come from a real heating problem or a bad sensor, and a guess may be unsafe.
A true overheat can damage wiring and cabinets above the cooktop.
Testing the sensors needs the hood opened and meters connected.
We give a written price first and cover the work with a 30-day warranty.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

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Other Microwave codes

FC E7JennAir OTR Microwave Code FC E7: no connection to your router FC E8JennAir OTR Microwave Code FC E8: registration rejected, check the SAID number FCE8JennAir OTR Microwave Code FCE8: wrong appliance type or model chosen Flashing 0:00JennAir Countertop Microwave Message Flashing 0:00: Reset the Clock Flashing ":" or PF in displayJennAir OTR Microwave Message Flashing ":" or PF: Power Failure or Clock Off LOC or "L" or Padlock IconJennAir Microwave Message LOC, L or Padlock Icon: Control Lock Enabled Locked, Lock or LocJennAir Built-In Microwave Message "Locked, Lock or Loc": Control Lock On ":" or "." in displayJennAir Built-In Message ":" or "." in display: clock needs setting

E24E24 questions

Is E24 dangerous?

It can be. The unit shut itself off because it believed the cavity hit 500F. Cool it fully, keep the door closed if you see smoke, and do not use it again until a technician has confirmed the reason.

Could burnt food cause E24?

Heavy burning inside can raise temperatures, and leftover residue can mislead sensors. Wipe a clean, cool cavity first. If E24 shows again with nothing inside, the sensors or the board are suspect.

Why does the guidance list a gas sensor?

The hood uses a sensor that watches for vapor during cooking. If it sends a wrong signal, the control can misjudge conditions, so we test it along with the thermal sensor and wiring.