Thermador Dishwasher Error Code E23

Error Code E23 on your Thermador dishwasher signals an issue with the drain pump. This code typically appears when the drain pump is clogged, blocked, or experiencing a malfunction. When confronted with this error, here are the steps to diagnose and resolve the problem:

1. Accessing the Drain Pump:

• Begin by lifting up the spray arm to move it out of your way.
• Remove the dishwasher filter and set it aside to access the pump area.

2. Inspecting the Pump Cover:

• Use a spoon or a tool to carefully remove the pump cover located beneath the filter.
• With the pump cover removed, you will have access to the pump impeller spinner.

3. Check Impeller Movement:

• The impeller should move freely without any obstruction. If it’s stuck or not spinning properly, it’s a clear sign of a problem.
• Inspect the area for any debris that might be obstructing the impeller. Be cautious, as there could be sharp objects, like glass, hidden in the debris.

4. Removing Debris:

• If you find debris causing the impeller blockage, carefully remove it. Using thick gloves is recommended to protect your hands from potential sharp objects.
• Clearing the impeller area of any obstructions is crucial to restore proper drainage.

5. Reassembling and Testing:

• After removing the obstruction, reassemble the dishwasher. Put the pump cover, filter, and spray arm back in their respective places.
• Run a test cycle to ensure that the drain pump functions correctly and that the E23 error code is no longer displayed.

If you’re uncomfortable with these steps or if the error code persists after your DIY efforts, it’s advisable to seek professional assistance. Experienced appliance repair technicians can provide a thorough inspection, identify underlying issues, and perform the necessary repairs to ensure your Thermador dishwasher operates flawlessly.