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Error code · Dishwasher

Thermador Dishwasher “All LEDs light up or flash”: Update or Reset

Every indicator on the control panel lights up or blinks at once and the dishwasher will not start. On the DWHD660EFM and other E-generation models the manual gives two readings: a software update may be installing,…

Minor · safe to check yourself
Code
All LEDs light up or flash
Appliance
Dishwasher
Brand
Thermador
Warranty
30-day workmanship

What All LEDs light up or flash means

Every indicator on the control panel lights up or blinks at once and the dishwasher will not start. On the DWHD660EFM and other E-generation models the manual gives two readings: a software update may be installing, which can take about 30 minutes, or the electronics have detected a problem. Waiting and then resetting is the first move, and a recurring pattern means service.

Usual causes of All LEDs light up or flash

  • A software update installing in the background
  • A problem detected by the electronics that a reset can clear
  • A repeat of the same problem after power was restored, which points to the control board
✓ A safe check worth trying

1. Leave the dishwasher alone for about 30 minutes in case an update is running. 2. If it is still not ready, hold the main switch for about 4 seconds to reset it. 3. If the lights return, switch it off at the breaker or unplug it for at least 2 minutes, then power it up again. 4. If it flashes a third time, call us.

! Why you should stop here
  • Repeated resets do not repair a control that keeps tripping, and they hide the pattern we need to see.
  • Interrupting power during a real update can leave it stuck longer, so we confirm which situation you have before anything is opened.
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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All LEDs light up or flashAll LEDs light up or flash questions
How long should I wait before resetting?

The manual says about 30 minutes, because that is how long a software update may take. If the lights are still flashing after that, hold the main switch for roughly 4 seconds to reset the machine.

Does this mean the dishwasher is broken?

Not necessarily. An update in progress looks the same as a detected electronics problem at first. Only if the pattern comes back after a reset and a 2-minute power-off does it become a service call.

Which models show this?

The manual covers the DWHD660EFM and the E-generation, including DWHD640E and DWHD661E, whose display uses E:xx-xx. Send us your model number and we will tell you whether the same steps apply.

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