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Error code · Dishwasher

Thermador Dishwasher E24, Where the Drain Path Is Obstructed

The cycle ends or stalls with water left behind, and E24 is on the display. Thermador documents this code as a drainage problem involving the drain pump cover, the hose or the airgap. Whatever is in…

Moderate · have it inspected
Code
E24
Appliance
Dishwasher
Brand
Thermador
Warranty
30-day workmanship

What E24 means

The cycle ends or stalls with water left behind, and E24 is on the display. Thermador documents this code as a drainage problem involving the drain pump cover, the hose or the airgap. Whatever is in the way sits somewhere between the tub and the sink drain, and the control noticed the water was not leaving.

Usual causes of E24

  • A clogged airgap fitting
  • Debris underneath the drain pump cover
  • A kinked drain hose
✓ A safe check worth trying

1. Turn the dishwasher off. 2. Take out the filter and lift off the drain pump cover, clearing out any debris underneath. 3. Look along the drain hose for kinks. 4. If your sink has a small cylindrical airgap fitting near the faucet, take off its cap and clear the buildup inside, then run a short cycle.

! Why you should stop here
  • If the cover, hose and airgap are all clear and the code remains, the drain path inside the machine needs a technician.
  • Forcing a hose around without knowing where the blockage is can loosen a connection under the sink.
Taking off a panel yourself does not by default void a manufacturer warranty, yet it can lead to accidental damage, and some manufacturers attach their own service terms. Read your warranty paperwork, or ask us, before you decide.
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E24E24 questions
What is an airgap, and do I have one?

It is a small cylindrical fitting, often next to the kitchen faucet, found on some installations. Plenty of dishwashers have none, so check your own setup before looking for one.

Which of the three checks should come first?

Start with the pump cover, since food debris collects there most often. Then the hose, and last the airgap if one exists. Any of the three can block the path.

Why would the airgap clog?

It sits in the drain path, so grease and food bits collect in it over time. Cleaning it is simple when accessible, but the drain path inside the unit still needs a technician if the code stays.

Request service

Is E24 still showing?

Our technician checks it in your home and hands you a written price before touching anything.