Maytag Microwave Error Code E24

E24 means the microwave's control board detected an internal temperature of 500°F (260°C), which is classified as an overheat condition. When this threshold is reached, the PCB assembly shuts down all microwave functions automatically. The cause could be a failed thermal sensor, a wiring fault, a ventilation problem, or a defective PCB assembly.

Start by unplugging the microwave and checking for obvious ventilation blockages, such as clogged vents or heavy grease buildup around the fan area. If airflow is not the issue, the next step is testing the thermal sensor with a multimeter to verify it is reading within its correct resistance range. Also inspect the wiring harness between the sensor and the PCB for burned connectors or shorts. If the sensor and wiring are both good, the PCB assembly is likely the faulty component and will need replacement.

Unplugging the microwave and waiting 60 seconds can clear the error temporarily, allowing the unit to restart. However, if the underlying cause, such as a faulty thermal sensor, damaged wiring, or a defective PCB assembly, is still present, the E24 code will return. A reset without diagnosis does not fix the problem and does not make the microwave safe to use long-term.

No. The E24 code represents a confirmed or suspected overheat condition at 500°F (260°C), and the microwave cancels all functions specifically because operating at or near this temperature poses a fire and damage risk. Do not attempt to bypass the shutdown or continue using the appliance until the thermal sensor, wiring, and PCB assembly have been inspected and the fault resolved.

Repair cost depends on the failed component. A replacement thermal sensor is typically $15 to $40 in parts, and replacing it is manageable for a careful DIYer comfortable working inside a microwave. A PCB assembly replacement costs $80 to $200 or more depending on the model, plus labor if a technician handles the job. If the microwave is older or out of warranty, compare the repair cost against the unit's replacement value before committing to PCB-level repairs.