Error E4 on Midea Dishwasher

What does error E4 mean on Midea dishwashers?

You’ve loaded your dirty dishes into your Midea dishwasher, selected the wash program, and suddenly the error code E4 appears. This code indicates a problem with the temperature sensor, a key component that regulates water heating during the wash cycle.

The temperature sensor helps your dishwasher run efficiently, ensuring the water reaches the right temperature to dissolve detergent and remove grease. If this component fails, the machine may not heat water properly, leaving your dishes dirty or even stopping the cycle entirely. Before diving into repairs, it’s important to understand what could be causing this annoying error.

• One of the most common causes is a faulty temperature sensor: Over time, these sensors can wear out or get damaged from constant exposure to heat and moisture, causing them to send incorrect readings to the control board.
• Another possible cause is a wiring or connection issue with the sensor: The wires might be frayed, broken, or poorly connected, interfering with the signal sent to the control board. Moisture inside the dishwasher can also corrode the connectors and disrupt electrical flow.
• There’s also the possibility that the heating element or resistance is failing: If the element doesn’t heat the water properly, the sensor may detect an incorrect temperature and trigger the E4 code.
• Lastly, we can’t rule out control board failures: A damaged electronic component, like a swollen capacitor or a broken circuit trace, may prevent the system from correctly interpreting the sensor’s signals.

What are the steps to fix error E4 on your Midea dishwasher?

We’ve prepared a small list of solutions to help you fix this issue yourself. Take note of each step and follow them carefully—you’ll likely find a solution.

1. First, unplug the appliance for safety: Before checking anything, make sure the dishwasher is turned off and unplugged. Also turn off the water supply valve to avoid leaks while working.
2. Locate and inspect the temperature sensor: The sensor is usually near the heating element at the bottom of the dishwasher. Remove the lower cover if needed and look for a small component with two wires, typically black and white. Carefully disconnect it and use a multimeter in ohms mode (Ω) to test resistance. At room temperature (20–25°C), it should read between 10kΩ and 50kΩ. If the reading is "infinite" or zero, the sensor is defective and needs replacement.
3. Inspect the wiring and sensor connections: Check the wires running from the sensor to the control board. Look for damage like fraying, cuts, or burns. Ensure the connectors are secure and free of rust or corrosion. If you find oxidized terminals, clean them with isopropyl alcohol and a soft-bristled brush along with electronic cleaner.
4. Test the heating element: If the sensor seems fine, the heating element might not be warming the water correctly. Use the multimeter in continuity mode to check the element. If there’s no continuity, it means the element is burned out and needs to be replaced with one that matches your dishwasher model.
5. Inspect the control board of your dishwasher: If everything else checks out, the issue could be in the electronic board. Open the control panel (usually behind the door) and look for burnt components, swollen capacitors, or broken circuit traces. If you have basic electronics knowledge, use the multimeter to check for voltage at the sensor connector and inspect the board thoroughly.
6. Restart the system and do a final test: After completing the repairs, reassemble everything, plug in the dishwasher, and power it on. Select a short cycle and see if the E4 error disappears. If the issue persists, you may need to replace the control board or contact a technician specialized in Midea dishwashers.

The E4 error code on a Midea dishwasher can be frustrating, but with a bit of patience and the right tools, it’s often solvable without needing a service call. Always prioritize safety, and don’t hesitate to contact a professional if the issue seems too complex. To prevent future errors, perform regular maintenance on your dishwasher, such as cleaning the filter and checking internal components. With proper care, your appliance will run efficiently for years to come.