What E24 Means
Over-the-Range Microwave: KitchenAid publishes for E24 "The oven reached an overheat condition of 500F (260C). There may a problem with the Thermal Sensor, the Gas Sensor, the Appliance Control Board, or the associated wiring." This one states a temperature that was actually reached, which none of the other codes in the set do. Five hundred degrees Fahrenheit is above where this appliance is meant to operate, and the code is the protection working - the appliance stopped itself. Whether the cavity truly got that hot or a sensor told it so, the appliance cannot know, which is why four candidates are named.
Common Causes of E24
- A thermal sensor or the sensor KitchenAid calls the Gas Sensor misreporting temperature
- A control board that failed to stop heating when it should have
- Wiring in the sensing or heating circuit
🔧 One Safe Check You Can Try
Switch off the cooking surface underneath and let it cool before you stand at the appliance at all - an over-the-range unit puts your forearms directly above a range, and a burn from a hot hob is the injury that actually happens while people are troubleshooting a microwave. Then power the unit down by switching off the circuit breakers for one minute, power it back up, watch the microwave for one minute to see whether the code returns, and verify the microwave operates. Then leave it switched off at the breaker until somebody has looked at it.
⚠ Why You Shouldn't Go Further Than That
- An appliance that has recorded an overheat condition should not be put back into service on the strength of a reset - if the heat was real, the thing that let it happen has not been found yet, and it sits directly above a cooking surface.
- Everything in this appliance beyond the door and the control panel sits alongside a capacitor that stays charged after the plug is pulled, which is why the published owner procedure stops at the breaker.
- This unit is mounted over a cooking surface, so any work on it starts with the range switched off and cool and a second person taking the weight - not with a screwdriver.
Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.