how do i fix a leaky Thermador dishwasher door

4 Reasons Your Thermador Dishwasher Leaking Through the Front Door

While Thermador dishwashers are known for their superior cleaning and drying abilities, they can still fall victim to troublesome leaks. What’s the most common cause of Thermador dishwasher leaking? A damaged door gasket causes leaks if it’s cracked or torn, requiring replacement. Troubleshoot common reasons for a Thermador dishwasher leaking through front door and how to stop the leak.

Thermador Dishwasher Leaking Through Front Door? Here’s How to Stop Leaks at the Source

Pinpointing the location is key to stopping a Thermador dishwasher leaking through front door. Determining the source of the leak can dictate the right solution, whether it be a DIY fix or professional repair. 

1. Broken Door Seal

One of the most likely reasons for a Thermador dishwasher leaking through front door is a broken door seal. This rubber gasket runs along the perimeter of the dishwasher door and forms a watertight seal when the door is closed, preventing leaks. However, over time, the gasket can dry out and crack. Damage such as rips or tears may also occur. When this happens, the seal will no longer be watertight, resulting in leaks through the door during operation.

To test the door seal, place a dollar bill at various points along the dishwasher door and close the door. If the dollar bill is easily removed, the door seal isn’t functioning properly and requires replacement. 

2. Water Inlet Valve is Stuck

The water inlet valve allows water to enter the dishwasher from your home’s water supply, opening and closing as needed. If the valve becomes stuck in the open position, water will continually enter the dishwasher until it overflows and leaks.

How do I fix a leaky Thermador dishwasher door if the water inlet valve is stuck? A stuck valve can’t be fixed and must be professionally replaced to stop the leak.

3. Center Wash Arm is Cracked

A Thermador dishwasher leaking from bottom of door is likely due to a cracked center wash arm. If the arm is cracked, a stream of water can shoot directly at the door seal and cause a leak. To assess the wash arm, open the dishwasher door, remove the lower rack and inspect it for cracks. A cracked wash arm must be replaced, as sealing or taping the crack won’t hold up to repeated heat and water.

Thermador dishwasher leaking through front door

4. Overfilled Dishwasher

In addition to a stuck inlet valve, drain clogs or a faulty float valve can also cause overfilling and leaks. A float valve monitors the amount of water in the dishwasher. Once it reaches a certain level, it switches off, signaling the water inlet valve to close. However, if the float valve is faulty, it won’t signal the inlet valve and water will overfill the dishwasher. How do I stop my Thermador dishwasher from leaking if the float valve is faulty? The valve must be replaced to stop the leak.

Drain clogs can occur if the drain becomes blocked with food particles, causing backups of water that result in leaks. Cleaning the dishwasher filter on a monthly basis can prevent food particles from blocking the drain. This buildup of food particles can also be the cause of a smelly dishwasher.

Here’s how to clear drain clogs from an overfilled dishwasher:

  • Mix a solution of baking soda and white vinegar.
  • Pour the solution down the drain and allow it to sit for 10-15 minutes.
  • Dissolve the solution and break up lingering clogs by pouring 4 cups of boiling water down the drain.

The experts at D&T Appliance Service Company can fix a Thermador dishwasher leaking through front door or any dishwasher problem. Call us for a fast and reliable repair!

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