How To Fix Thermador Dishwasher Not Drying

The Thermador dishwasher washes your dishes without an issue, but it’s always disappointing when you open the dishwasher to find your clean dishes aren’t dry.

In my opinion, it is not a very big problem to worry about. It can only be solved with a few troubleshooting steps. I also did so and wrote it in a categorical way.

This can be frustrating, but there are steps you can take to solve this problem. If you start with these steps, you can get back to enjoying your clean dishes in no time!

Run diagnostic cycle with clean dishes

Try running a diagnostic cycle with clean dishes to confirm if there is an issue with your dishwasher not drying. You may need to switch detergents in order for a diagnostic cycle to occur.

During a diagnostic cycle, water will fill both tubs and then drain at end of the cycle, leaving no dishes in either tub.

If you have hard water, run another load of dishes using filtered water to see if your dishwasher dries completely.

When it comes time for a repair on your Thermador dishwasher not drying, contact Trusted Appliance Repair and get back to normal household operations.

Thermador Dishwasher Not Drying

Check for an air gap under the sink

Have you checked to see if there is an air gap installed under your sink? These are available in plastic or metal and they plug up any water flow that isn’t necessary. Be sure to check before you proceed.

An air gap is not a mandatory part of the code but it is considered best practice for home safety, especially when it comes to potential flooding. You can find these at most hardware stores or order one online.

They cost less than $20 and will make a huge difference for any future dishwashers that you install in your home, so don’t skip out on them because it takes two minutes to install them properly!

Check dishwasher drain hose for blockage

If there’s no visible blockage in your dishwasher drain hose, inspect it by hand. Hold a small mirror up to one end of your drain hose and look for any debris that might be blocking drainage.

It may help to turn off the water and let some of it run out so you can better see inside.

Use pliers to gently pull out any foreign objects you find. Reattach any hoses that have come loose, then run another cycle with fresh water in an empty load.

The dishes should now be dryer than before. If not, proceed to Step below.

Clean Dishwasher Drain Hose

If you still have a problem with your dishwasher not drying completely, check to see if it has a drain hose. If so, remove it from where it’s connected on both ends.

Then clean both ends out by disconnecting and cleaning off any debris that might be clogging things up. Cleaning it out should do the trick for your dishwasher not drying.

If you don’t see a drain hose, check to make sure that water is flowing from all of your hoses; also check to make sure that there are no kinks in them as well.


Clean Rinse Aid Dispenser

For stubborn clogs, you may need to clean out your rinse aid dispenser. If a sock or piece of paper should happen to get in there, it could prevent water from exiting.

Turn off your dishwasher, then remove its lower kick plate by unscrewing it.

Look inside with a flashlight and see if you can spot any kinks in your tubing. Use a snake or long, narrow object (like an Allen wrench) to free up any stuck material that might be blocking water flow.

Rinse and repeat until no more debris comes out of the tube or is present on your floor when you look under it while standing outside of your dishwasher.

Clean Heater Element

If there are any food particles or mineral build-up on your dishwasher heater element, turn off the power to your dishwasher. Unplug and remove from under your sink.

Scrub with a toothbrush and a solution of equal parts vinegar and water. Be sure to dry completely before reconnecting to power.

If you aren’t sure how to check out an online video for assistance or call a professional for help. Important! Do not use a metal brush as it may short circuit or damage your heating element.

Also read:  Fix Thermador Dishwasher Not Draining

Also watch the video to fix the issue


You can clean up your dishwasher to make sure your dishes come out dry. Check for clogs and make sure all of your connections are secure.

There may be an actual problem with your drain line or gasket. You can find replacement parts for these issues on Thermador’s website.

If you need additional help, contact a professional for assistance. Schedule appliance repair by contacting Thermador Support.

I'm a Professional Content Writer on and willing to write Articles on Technology-based Items. Writing basically is not my job but I consider it as my hobby and passion. I have been working as a Content writer for quite some time.
I'm a Professional Content Writer on and willing to write Articles on Technology-based Items. Writing basically is not my job but I consider it as my hobby and passion. I have been working as a Content writer for quite some time.