Midea Washer Error Code E40

The E40 code on a Midea washer indicates that the EEPROM memory chip on the main PCB has failed. This chip stores the washer's operating settings and configuration data. When the control board cannot access this memory, it displays E40 and stops functioning. The fix is replacement of the main control board.

No, a reset or power cycle will not clear the E40 error. Because the fault is caused by a physically failed EEPROM chip on the control board, the underlying hardware problem remains regardless of how many times the machine is reset or unplugged. The error will return immediately upon startup until the PCB is replaced.

The cost depends on whether you repair it yourself or hire a technician. A replacement Midea main control board typically costs in the range of $80 to $200 for the part alone, depending on the specific model. If you use a professional repair service, expect to add $100 to $200 or more in labor costs, bringing the total repair estimate to roughly $180 to $400.

If you are comfortable working with appliance electronics and sourcing the correct replacement PCB for your Midea model, you can replace the control board yourself. The repair involves disconnecting the wiring harness connectors from the old board and installing the new one. However, if you are not experienced with appliance electronics, hiring a qualified technician is the safer choice.

The washer will typically halt operation when E40 is active, so running a wash cycle is not possible in this state. There is no immediate safety hazard such as a fire or flood risk from the E40 code itself, but the machine cannot be used for laundry until the control board is replaced.