LG Microwave Error Code E-24

E-24 on an LG microwave signals an over-temperature error, meaning the control board detected that the oven's internal cavity temperature exceeded its safe operating limit. This condition triggers an automatic shutdown to protect the appliance and prevent hazards. It is most commonly associated with using Convection mode and then switching to microwave mode before the oven has had time to cool down.

No, you should not attempt to continue using the microwave while E-24 is active. The error indicates the cavity temperature has reached an unsafe level, and the appliance has shut down as a protective measure. Using the unit while this error is present or bypassing the shutdown could risk component damage or a fire hazard. Allow the oven to cool fully before attempting to restart it.

Repair costs depend on the failed component and whether you hire a technician or perform the repair yourself. A replacement temperature sensor typically falls in the range of $15 to $50 for the part alone, while a heater element can range from $30 to $80 or more. If you hire a professional appliance technician, expect to add $75 to $150 or more in labor costs. For older units, it is worth comparing the repair cost against the price of a replacement appliance.

If the error is caused by residual heat from convection cooking, you can resolve it by unplugging the microwave, allowing it to cool completely for 30 to 60 minutes, and then restarting it. If the error returns during normal use, the temperature sensor or heater element likely needs to be tested and possibly replaced, which requires basic electrical diagnostic skills and a multimeter. Any work involving the heater or internal wiring should be performed with the unit fully unplugged.

Unplugging the microwave and allowing it to cool completely may clear E-24 if the error was caused by temporary overheating from back-to-back Convection and microwave use. However, if the root cause is a defective temperature sensor or a heater that is not cycling off correctly, the error will return after reset. A reset that does not hold is a strong indicator that a component needs testing or replacement.