Before resetting, note what error code (if any) is showing on the display.
I've been on probably 200 Samsung dishwasher calls in the last five years and here's what I keep seeing: the control board gets stuck in a frozen loop after a power blip and just won't come back on its own. A reset usually fixes it in under two minutes. But if you've got a persistent LC code, forget the reset until you dry out that base pan first. I've watched people cycle the breaker six times thinking it'll clear. It won't.
SamsungDishwasher90% DIY Success
How to Reset Your Samsung Dishwasher
OK so your Samsung dishwasher is just sitting there, maybe frozen on a code, maybe completely dark, maybe the buttons are lit up but doing absolutely nothing. Relax. Most of the time this is a logic glitch, not a hardware failure. A tiered reset, starting with the Cancel button and working up to the breaker, forces the processor to reload everything fresh. Probably costs you five minutes and zero dollars.
Most Likely Causes
Based on aggregated repair data, here is the probability breakdown for this error code:
Error code appeared and needs to be cleared after repair40%
Machine is frozen or unresponsive to button presses24%
Cycle did not complete and machine is stuck mid-program14%
Power surge or brief power outage disrupted cycle12%
Control lock (CL) activated and machine appears dead10%
Symptoms You May Notice
Display completely frozen on an error code and every single button on the panel does nothing when you press it.
Machine is totally dark and silent, like it lost power, even though the breaker is still on.
CL shows on the screen and the machine acts completely dead (it's not broken, just locked out).
Cycle indicator light stuck at the same point for 45+ minutes with no sounds at all coming from the machine.
Machine stopped mid-cycle, drained itself, and now won't start back up no matter what you press.
Tools Required for Diagnosis
Flashlight (to inspect the base pan for moisture)Dry towel or sponge (if LC code is present and base pan needs drying)
Diagnostic Checklist
Follow these steps in order. We start with the easiest external fixes before opening up the machine.
Did the reset not work?
If the problem comes back after following these steps, a component has permanently failed and needs replacement. Check the specific error code your dishwasher is showing:
How do I reset a Samsung dishwasher that's not responding?
First, look for a CL code on the screen, which means child lock is on. If the screen's just frozen, hold the Start button for 3 seconds. If it's still a brick, go straight to the breaker. Samsung boards can get into a 'zombie state' after a power flicker where they need a total power loss to reboot. Leave the breaker off for at least 30 seconds to make sure the memory clears. I've had machines that needed a full 60 seconds before they'd come back properly.
Will resetting the Samsung dishwasher clear error codes?
Most codes like 4E or 5E will clear with a reset, but LC is the stubborn one. The LC sensor is a physical float in the bottom tray. If there's even a teaspoon of water down there, the code'll come back 10 seconds after a reset. You have to dry that tray out manually, usually by tilting the machine or using a towel, for the reset to actually stick. I had a customer who reset hers seven times in one afternoon before she called me. Dried it out in two minutes and it's been fine since.
How do I cancel a cycle on a Samsung dishwasher?
Just hold the Start or Cancel button for 3 seconds. The dishwasher'll automatically trigger a short drain cycle. Don't open the door right away because there's probably hot soapy water in there that needs to drain out first. Once the pump stops and the lights stop flashing, the cycle's officially cancelled and you can select a new one. Takes maybe 90 seconds total from button press to done.
Does a Samsung dishwasher reset erase all settings?
No, a standard reset won't wipe your custom settings. Samsung uses non-volatile memory for things like your last used cycle or delay start preferences. A power reset just clears the temporary RAM where active error codes and current cycle progress are stored. You won't have to reprogram anything. I've done hundreds of these resets and not once has anyone called me back saying they lost their settings.
How do I know if I need a reset vs. an actual repair?
Here's how I think about it: if the machine has power, the display does something, and this started suddenly after a power event, try the reset first. Nine times out of ten, that's it. But if the machine's been acting weird for weeks, or if you hear grinding, or if you see actual water on your floor, a reset won't fix that. Also, if the same error code keeps coming back within a day or two of resetting, something physical is broken and needs to be replaced. At that point you're looking at parts.