Samsung washer won't start: check Control Lock (hold Lock button 3-5 seconds). Then check that the door or lid is fully closed (listen for the latch click). Also check the outlet and breaker.
Most of the time when a Samsung washer won't start, it's one of three things: Control Lock is on, the door latch isn't clicking all the way, or the board took a hit from a power surge. Ignore it long enough and what's a $40 latch fix turns into a $350 board replacement. I've seen it happen. If it's sitting there with a lit display and doing nothing, don't panic yet.
OK so here's the deal with Samsung washers that won't start. These machines are actually pretty communicative, they'll usually signal something's wrong with a blinking light or a specific pattern. The tricky part is Samsung's safety interlock basically refuses to let the motor spin if even one sensor sends a bad signal. Could be the door latch, could be Control Lock, could be a board issue. I've fixed probably 40+ of these and it's almost never catastrophic.
Most Likely Causes
Based on aggregated repair data, here is the probability breakdown for this error code:
Lid/door lock not engaging30%
Control Lock active20%
Thermal fuse blown15%
Control board failed15%
Water supply not detected10%
Start switch worn10%
Symptoms You May Notice
You press Start and the machine beeps once or twice at you but nothing happens, no drum movement, no water filling, just silence.
Display is fully lit and showing your cycle selection but the Start button feels completely dead no matter how many times you press it.
You can hear the door lock trying to engage, that little click-click sound, but then it releases again and the cycle never actually begins.
Machine starts filling with water and then stops dead a few seconds in with the Start light blinking at you.
Completely dark display with zero response to any button including Power, which usually means the board took a hit or the outlet itself is dead.
Can you reset a Samsung washer to clear the WONT-START code?
Unplug from the wall and wait a full 60 seconds, not 30, not 15. While it's unplugged, hold the Power button down for about 5 seconds to drain any charge left in the capacitors. Plug it back in and try a Spin Only cycle first since that's the simplest thing the board has to execute. If it spins you're good. If not, you've got a hardware issue a reset won't touch.
Tools Required for Diagnosis
Phillips #2 screwdriverFlathead screwdriverDigital multimeterFlashlight or headlampSpring expansion tool (for door boot seal on front-loaders)Needle-nose pliersTorx T20 screwdriver (some Samsung models use these on the top panel)
Diagnostic Checklist
Follow these steps in order. We start with the easiest external fixes before opening up the machine.
ComponentComponent Under Test
Expected Range0–5 ohms
ConditionIf Open (OL) or infinite, replace component.
Frequently Asked Questions
How much does it cost to fix a Samsung washer that won't start?
Depends what's actually broken. A door latch is $25 to $40 for the part, maybe $150 total with a tech's labor. Control board is where it gets painful, figure $200 to $350 for the part alone plus another $100 to $150 in labor. I replaced three Samsung boards last week and every single one was on a machine that had taken a surge hit. If the machine's over 8 years old and it needs a new board, honestly just start pricing out new units. A new Samsung front-loader starts around $700 and comes with a fresh warranty.
Is it worth repairing a Samsung washer that won't start?
Usually yes if it's under 7 years old and the repair is under $300. Samsung's inverter motors have a 10-year warranty, so if the motor itself is involved you're probably covered at no cost. The things that are NOT worth fixing are a failed main control board on an older machine or a cracked tub. For a door latch or a blown fuse, absolutely fix it. Those are cheap repairs that'll buy you several more solid years.
Can I fix a Samsung washer that won't start myself?
If it's Control Lock or a hard reset you need, yeah absolutely, no tools required. Door latch on a front-loader is DIY-able too but you'll need to peel back the door boot seal and there are a bunch of small clips involved, so go slow and don't force anything. The part's cheap and there are good model-specific videos online. Control board replacement is doable if you're comfortable around electronics, just take pictures of every connector before you unplug anything.
Why does my Samsung washer have power but still won't start?
This is the question I get most. Power to the display doesn't mean power to the motor. Samsung's safety system requires the door latch to confirm closed, Control Lock to be off, and on some models water supply pressure to be present before it'll let the motor run. Any one of those sensors sending a wrong signal and the machine just sits there looking at you. Start with the door latch and Control Lock before you go anywhere near the electronics.
How do I know if my Samsung washer's control board is bad?
A bad board usually shows up in one of a few ways. Display works but no button does anything at all. Or buttons work intermittently, like sometimes it starts and sometimes it doesn't with no pattern to it. Or you see random error codes that don't make sense given what the machine is doing. The dead giveaway is when you've checked the door latch, the fuses, the outlet, everything checks out fine, and it still won't go. At that point it's the board.
Does Samsung cover won't-start issues under warranty?
Standard Samsung warranty is one year parts and labor. The inverter motor gets 10 years. But here's what a lot of people don't know: Samsung has extended warranty coverage for certain known defects, and main control board failures on some models have been covered well outside the standard period. Call Samsung support at 1-800-SAMSUNG before you pay for a new board, especially if your machine is under 5 years old. I've personally seen them cover it at year 3 and year 4. Worth the 20 minute phone call.
Same Fix Works on These Brands
Samsung shares the same hardware platform with these brands. The diagnosis and repair steps are identical.