Most Samsung dishwasher "won't start" calls come down to a locked panel, a door that didn't latch fully, or a control board that needs a power-cycle. The unit has multiple safety interlocks that prevent it from starting if anything's off, and the panel does a poor job of telling you which one fired. Working through the checks in order rules out the easy stuff before any service call.

Quick checks

  • Control Lock indicator (a small padlock icon) is lit on the display.
  • Door doesn't latch fully — you can wiggle it slightly when "closed."
  • Power outage or breaker trip in the last day.
  • Delay Start was set by accident; the unit will start later, not now.
  • Water supply valve is fully open.
  • Display works but Start does nothing when pressed.

Step by step

  1. Look at the display for the padlock icon. If it's on, Control Lock is active. On most Samsung models, press and hold the Dry+/Child Lock button for 3 seconds. On newer touch-control models, hold Heated Dry and Delay Start together for 3 to 5 seconds until the icon clears.
  2. Close the door firmly and listen for a click. A weak latch is the #2 cause. Push hard near the latch — not the handle — to make sure it engages.
  3. Press and hold Start for 3 seconds. The dishwasher should beep, the display should clear, and the cycle should restart. This is the standard soft reset.
  4. Check for Delay Start. If a delay time is showing instead of a cycle time, the unit is waiting. Cancel by holding Start, then re-select the cycle without delay.
  5. Confirm the water supply valve under the sink is fully open. If the dishwasher senses no water, some models won't start the wash phase.
  6. Cut power. Turn off the breaker (or unplug, if accessible) for 1 to 5 minutes. This clears the control board's state and resolves most "frozen panel" complaints.
  7. Restore power and try Start again. Wait for the display to come fully back before pressing buttons.
  8. If nothing on the display lights up at all, the unit has lost power upstream — check the outlet, breaker, and any GFCI on the circuit.

If Control Lock won't turn off

  • Wrong button combination for the model. Samsung uses different button pairs across models. Check the user manual for "Control Lock" or "Child Lock" — usually a 3-second press of a single labeled button or two touch-control buttons together.
  • Touch panel needs cleaning. Greasy fingerprints can interfere with capacitive touch buttons. Wipe with a damp cloth and dry fully.
  • Stuck button on a hard-key model. A button physically stuck in the pressed position confuses the controller. Press each one to feel for normal action.
  • Power-cycle clears most stuck states. The breaker reset above usually solves Control Lock issues that don't respond to the button combo.

If the door won't latch

  • Rack out of position. The bottom rack can shift forward and hit the door. Push it fully in.
  • Tall items. A casserole dish or cutting board can block the door from closing fully.
  • Strike plate loose. The metal piece on the tub the latch hooks into may have shifted. Tighten the screws.
  • Latch hook bent or broken. The latch on the door is plastic on many Samsung models and can crack. This is a service or DIY part replacement.
  • Hinges sagging. A door that hangs low won't align with the latch. Hinges are replaceable.

When to call for service

  • Display dead, breaker reset doesn't bring it back.
  • Error code on the display (LE, OE, 9E, etc.) — note the code first.
  • Button presses register on the display but no cycle starts after a full reset and lock-clear.
  • Door latch is broken, bent, or sprung.
  • Burning smell or visible damage.
  • Tripped circuit breaker that won't stay reset (electrical fault).

Samsung has a dedicated dishwasher support line and chat. Out of warranty, an independent appliance tech is usually cheaper than Samsung's first-party service for door, latch, and control-board work.

Good maintenance rhythm

  • Monthly: clean the bottom filter and check for food debris under it.
  • Monthly: wipe the door gasket and edges where food collects.
  • Quarterly: run a dishwasher cleaner or vinegar cycle on the hottest setting.
  • Yearly: check the door latch and hinges for play or wear.
  • Yearly: inspect the supply line under the sink for kinks or leaks.
  • Ongoing: don't slam the door; push firm but steady to latch.
  • Ongoing: keep the panel face wiped down so touch buttons stay responsive.
Add reminders to the HomeSaver mobile app to always stay ahead of your home maintenance.

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