Samsung Dishwasher Blinking Lights: What Each Light Combination (Heavy, Normal, Express 60…) Means
Samsung dishwashers without a full display announce faults as blinking light combinations — and one blinking light on its own is usually just a state (a paused cycle or a finished one). This page translates the common patterns: which lights blink together for fill, drain, leak, heater and sensor faults, and the state-blinks that mean nothing is wrong.
First, the non-faults
A single light blinking slowly with the cycle resumable by pressing Start = the door was opened mid-cycle. Blinking that stops when you press and hold Start for a reset = a state, cleared. Always try the door-latch + Start test before decoding anything.
Pattern families (by the lights that blink together)
On Samsung's light-code models, faults blink in combinations: the Auto/Normal-side patterns travel with water-supply and level issues; Heavy-side patterns with heating and temperature sensing; combinations including Express 60 with drain and leak families. The exact pairing for YOUR model is printed in its manual's 'information codes' table — light-code charts genuinely differ between Samsung dishwasher generations, so match the combination, not a memory of one.
The leak pattern deserves respect
The combination your manual maps to the leak code (LC family) means water is in the base: stop, supply off, and use the leak playbook (dry base, find the drip) rather than resetting repeatedly. A dishwasher that 'just needs resetting' every few days with a leak pattern is leaking.
When lights blink but the manual disagrees
Photograph the panel, note which lights and whether they're steady-blink or flashing together, and cross-check the model's own table (the model number is inside the door edge). If the pattern isn't in the table, a power-cycle and a test cycle will usually either clear it or produce the code in a readable form.
Why the lights are a code system, not a decoration
On Samsung dishwashers without a full text display, the cycle lights are the display. Before manufacturers fitted screens that could spell out a code, the fault had to be encoded in the panel itself — so Samsung assigned meanings to combinations of lights blinking together, and published those combinations in its support documentation and model manuals as the machine's fault language. Three reading skills make the system work. First, a combination means the listed lights blinking together, in unison — watch two full repetitions before deciding which lights are involved, because a light caught mid-cycle can look involved when it is only lit. Second, photograph or video the panel: at the sink, from memory, everyone misremembers which of Heavy and Normal was blinking, and the combinations differ by a single light. Third, know your model's dialect — the panel layouts vary (some models have Express 60, some have Smart Auto or Quick+ instead), and Samsung's chart gives the equivalent combination for each layout. And if your dishwasher does have a display and is showing a letter-and-number code instead, stop decoding lights entirely: the display code is the more precise message, and Samsung directs display models to the error-code chart, not this one.
The water-supply family: not enough water, or the wrong pressure and temperature
Samsung's chart puts the supply faults on a small group of single lights and one trio. A single blinking Auto, Express 60, Quick, or Smart Auto light means the dishwasher is reporting incorrect water pressure or temperature — the supply side, in other words: the under-sink valve not fully open, low house pressure, or a supply problem upstream of the machine. The low-water combination is distinct: Normal, Heavy and Quick blinking together — or Normal, Heavy and Smart Auto on layouts that have it — means the dishwasher is not receiving enough water to run safely. Read the two as stages of the same story: the single lights question the supply's pressure or temperature, the combination says the tub itself ended up short of water. The homeowner checks are the supply chain in order: valve fully open, no kinked supply line where the machine was pushed back, and no recent plumbing work that left the line off or full of debris. Samsung also notes that Floodsafe-type hoses are incompatible with its dishwashers and can themselves cause supply complaints. If the supply is proven strong and the combination persists, the fault has moved inside the machine — inlet valve or level sensing — and that is service work.
Too much water, and the drain family
The mirror-image family reports water that will not leave. Samsung's chart maps Auto and Heavy blinking together, Heavy and Quick together, and Heavy and Smart Auto together to the same finding: too much water in the dishwasher, usually a sign of drainage problems. Two single lights carry the drain fault directly: Delicate blinking alone, and Quick+ blinking alone, both mean the dishwasher cannot drain properly. The connection between the two groups is mechanical logic — a machine that cannot empty will, sooner or later, also be a machine holding too much water — so do not be surprised if a drain story presents in either form. Samsung's own first check for every one of these combinations is the drain hose: pinched or kinked, especially if the dishwasher has been moved recently, which is when hoses get trapped against the cabinet or the wall. Beyond the hose, work the homeowner end of the drain path: the sink drain and garbage disposal connection (a newly fitted disposal with its knock-out plug still in place is a classic), and the machine's own filters, which when matted slow the drain to a crawl. A drain pump that runs but moves no water, or a combination that returns immediately after the hose is proven clear, has crossed into service territory.
The leak combinations: stop and look, don't reset
Two combinations on Samsung's chart belong to the leak sensor, and they deserve a different response from everything else on this page. Heavy blinking alone — on models without Express 60 — means the leak sensor has detected moisture, or, on WaterWall models, that the water reflector is blocked. Normal blinking alone carries the same report: the leak sensor detects moisture or a blocked reflector. Moisture in the base of a dishwasher is not a software state; something wet is somewhere it should not be, whether that is a genuine leak from a hose, seal or valve, or something more innocent — water splashed during loading or a move, or an overfilled detergent dispenser foaming over. Samsung's guidance follows that split: if a leak is visible, deal with the leak; if none is visible and the machine was recently moved, let the splashed water dry and see whether the report clears. What the leak combinations should never get is the reset-and-forget treatment. A dishwasher that presents a leak combination every few days is not being glitchy — it is leaking slowly, and bases, floors and cabinets pay for the delay. If the combination persists with no visible cause, power off at the breaker and get service; the sensor is reporting something real until proven otherwise.
The heat family: overheating, sensors, and a heater that can't
The largest family on Samsung's chart is thermal, and it splits into three sub-stories. Overheating — the dishwasher itself too hot — is reported by Auto and Normal together, Normal and Quick together, and Normal and Smart Auto together. Incoming water that is too hot is a separate report: Normal, Delicate and Quick, or Normal, Delicate and Smart Auto, and Samsung's check is the supply itself — the hot water should not be set above 176°F (80°C). The sensor-and-heater failures make up the third group: Heavy and Delicate together means the heater is failing; Heavy and Express 60, or Heavy and Quick+, means the dishwasher cannot heat the water; Normal and Heavy together means the thermistor — the temperature sensor — is malfunctioning; Normal, Heavy and Express 60 together means the thermistor has short-circuited; and the temperature-sensor failure report appears as Heavy, Delicate and Quick, Heavy, Delicate and Smart Auto, or Heavy, Quick+ and Smart Auto, depending on the panel layout. Samsung's handling of this whole group is consistent: run one empty normal cycle with detergent for the sensor reports if the chart suggests it, and if the combination persists, disconnect power and request service. Heating elements and their sensors are not homeowner parts territory — a dishwasher that cannot control its temperature is a safety-relevant fault, not a settings issue.
The panel family — and the combinations Samsung doesn't list
The last family is about the control panel itself. A stuck button — a pad held down by grime, moisture or a failing membrane — is reported by Auto and Express 60 together, by Auto, Normal and Express 60 together, or by Normal and Delicate together, depending on layout; Samsung's check is to power off and press each button in turn, feeling for one that sticks or fails to respond. Delicate and Quick blinking together is the panel's neighbour rather than the panel: the door may not be properly closed, so latch it firmly before suspecting electronics. And when all four or more lights blink together, Samsung reads it as the control panel being unable to communicate with the rest of the dishwasher; its prescribed step is power off at the circuit breaker for two minutes, then restart — a genuine reset for a communication fault, not a ritual. Finally, the honest catch-all: Samsung states that any other combination is an unidentified issue, and its advice is to watch how the machine runs — if it operates normally, no action is needed; if it misbehaves, that behaviour plus your photograph of the combination is what service needs. A combination that appears nowhere in the chart is a reason to check the display code instead, on models that have one — never to borrow a meaning from a different model's chart.
When your combination is not in Samsung's list: the working method
It happens constantly: you count the blinking lights carefully, open Samsung's chart, and your exact combination is not there. Samsung itself anticipates this - its support page states that any other combination of lights blinking is an unidentified issue, and its guidance is to watch how the dishwasher actually operates: if it functions normally, no action is needed, and if it misbehaves, that is a service matter. Work that official position into a method rather than a shrug. First, preserve the evidence: photograph or video the panel through two full repetitions, because the combination you cannot find is also the combination you will misremember by the time you speak to anyone. Second, confirm you are reading the right model's list - Samsung's chart gives equivalent combinations for different panel layouts (models with Express 60, Smart Auto, Quick+ and other variants do not carry identical panels), so find the list for your model's layout by its model number before declaring the combination unlisted. Third, match by fault family rather than by exact lights: note what the machine was doing when the blinking started - would not fill, stopped with water standing, stopped hot, leaked, or simply stopped - because the behaviour places the fault in the supply, drain, heating, leak or panel family even when the lights spell nothing documented, and family is what a technician will ask for first. Fourth, do not borrow a meaning from a different model's chart or a different brand's list: a combination that means one thing on another layout is a confident wrong answer, which is worse than Samsung's honest 'unidentified'. And hold the one documented exception clearly: all four or more lights blinking together is listed - it is the control panel unable to communicate with the rest of the dishwasher, and Samsung's step is power off at the circuit breaker for two minutes, then restart. Everything else unlisted follows the monitor-or-service rule: normal operation, log it and carry on; abnormal operation, service, with your video and the cycle stage it failed at as the handover.
Key takeaways
- Light patterns repeat — watch two full repetitions before deciding which lights are involved.
- Keep the manual's information-code page photographed on your phone; light codes are impossible to decode from memory at 11pm.
Resetting the Samsung dishwasher
Samsung dishwashers clear most codes when you cancel the cycle (hold Start/Cancel for about 3 seconds so the machine drains), then cut power at the breaker for 5 minutes. Restore power and run a short cycle. Leak-related codes (LC) will return immediately if water is still sitting in the base pan — the reset cannot clear water that is physically still there.
Related guides
Facts on this page were checked against manufacturer documentation: www.samsung.com · www.samsung.com · www.samsung.com · www.samsung.com · www.samsung.com · www.samsung.com · mans.io · www.notice-facile.com · www.notice-facile.com · manuals.plus · downloadcenter.samsung.com