Samsung dishwasher won't start is a known issue affecting DW80R9950US. Our technicians specialize in Samsung-specific diagnostics and repair.
Samsung dishwasher won't start is typically caused by faulty door latch or failed control board. Samsung-specific factor: leak-sensor lockout after a base weep — the samsung control trips a protective hold and only pulses the drain pump until the base is dried. Repair costs $100-$350 with free diagnostic and 90-day warranty.
Leak-sensor lockout after a base weep — the Samsung control trips a protective hold and only pulses the drain pump until the base is dried
Base-tray residual water from a minor tub or hose weep keeping the leak sensor tripped
Door-latch switch failure leaving the control reading the door as open so the cycle never starts
Touch-panel or membrane fault so the start touch is not registered
Water-inlet or flow issue the control interprets as a supply fault, holding the start
Other Samsung models may also be affected. Book a free diagnostic for confirmation.
Seeing one of these codes? It likely indicates won't start.
Bay Area Samsung owners who find the dishwasher dead but hear the drain pump running have usually tripped the leak sensor — a small base weep floats the sensor and the control refuses to start until the base is dry. The technician dries the tray and finds the source weep.
Listen: a Samsung that only pulses its drain pump and will not start has likely tripped the leak sensor — tip the unit to drain the base tray
Find and fix the source weep at the pump seal, spray tower, or inlet before drying, or the sensor trips again
If the base is dry, check the door-latch switch and the touch panel before condemning the control board
The technician drains the base and clears the leak-sensor trip first — with the source weep fixed this is the low-cost resolution for most no-start Samsung calls. A door latch or inlet fault is a moderate repair; a control or panel failure is the higher-cost end. Reading the no-start as a dead board skips the Samsung leak-sensor interlock that is usually the real cause.
| Diagnostic | Free |
| Typical repair | $100–$350 |
| Repair time | 1-2 hours |
| Warranty | 90 days parts + labor |
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