If your dishwasher will not start, confirm that it has power, the water shutoff is open, Control Lock and Delay Start are off, a cycle is selected, and the door closes firmly. A blinking Start or Resume light often means the cycle was interrupted or the door was not latched in the required sequence. Stop if the breaker trips, water is near wiring, the cord or junction box smells hot, or the controls remain dead after one safe reset.
No lights, beeps, or display Likely cause: Lost power, tripped breaker, outlet or junction-box problem, failed control, or damaged wiring. Homeowner action: Check the breaker once and any accessible plug without moving the dishwasher.
Lights are on, but Start does nothing Likely cause: Control Lock, Delay Start, incomplete cycle selection, door latch, touchpad, or control fault. Homeowner action: Clear the displayed mode, select a cycle again, and close the door firmly.
Start or Resume light keeps blinking Likely cause: Door opened mid-cycle, door not latched, or start sequence not completed. Homeowner action: Press Start or Resume and close the door within the time stated in the manual.
Dishwasher hums but never fills Likely cause: Closed water valve, inlet restriction, float issue, inlet valve, or control problem. Homeowner action: Confirm the under-sink water valve is open and stop after one attempt.
Breaker trips when Start is pressed Likely cause: Shorted component, wet wiring, motor, heater, or power connection fault. Homeowner action: Leave the breaker off and schedule professional diagnosis.
Door will not latch Likely cause: Rack interference, misaligned strike, worn latch, hinge, or installation problem. Homeowner action: Reseat the racks and remove anything blocking closure; do not force the door.
DIY difficulty: Low for visible, exterior, settings-based, cleaning, loading, and thermometer checks. Moderate when the appliance must be moved slightly or monitored across a cycle. High for any repair that requires removing service panels, testing live voltage, handling gas components, accessing sealed refrigeration parts, or disassembling drive components.
Estimated homeowner check time: 15 to 45 minutes.
Tools needed: Flashlight, owner manual, phone for photos or error codes, appliance thermometer when temperature is involved, towels for minor cleanup, and mild soap for approved cleaning.
Safety risk: Medium. The risk becomes high if there is gas odor, burning smell, repeated breaker tripping, flooding, overheating, damaged wiring, or any need to access internal components.
When to call a professional: Call when the safe checks below do not restore normal operation, the symptom returns, the appliance shows repeated error codes, or the repair would require electrical, gas, sealed-system, control-board, motor, or cabinet disassembly.