Fills even when unplugged
Water keeps entering the tub after you unplug the washer or turn the controls off.
Start here: Go straight to the inlet valve check. That is the classic stuck-open valve pattern.
Washer Overflowing
Samsung Washer Keeps Filling
Direct answer: If your Samsung washer keeps filling, the first thing to check is whether the water stops when you unplug the washer. If it keeps taking in water with power removed, the washer water inlet valve is likely stuck open. If the water stops when unplugged but the tub overfills during a cycle, the more likely problem is the washer pressure hose or water level sensing circuit.
Most likely: Most of the time, this is either a washer water inlet valve that is not closing all the way or a washer pressure hose that has slipped off, split, or plugged up with residue.
Start with the simple split: power-off filling versus cycle-only overfilling. That tells you whether water is getting past a valve mechanically or the washer is being told the tub is still low. Reality check: a washer that keeps filling can overflow a room a lot faster than people expect. Common wrong move: restarting the cycle over and over without shutting the water supply off first.
Don’t start with: Do not start by ordering an electronic control or tearing the cabinet apart. One unplug test and a quick pressure hose check usually narrow this down fast.
If it fills even unpluggedShut off the supply valves and suspect the washer water inlet valve first.
If it only overfills during a cycleCheck the washer pressure hose and air dome path before blaming the control.
Last reviewed: 2026-04-16
What the filling pattern tells you
Only overfills during a cycle
The washer starts normally, but the water level climbs too high before it moves on.
Start here: Check the washer pressure hose and the connection points first.
Fills slowly between loads
You come back later and find water sitting in the tub even though no cycle is running.
Start here: Suspect a washer water inlet valve that is seeping past internally.
Hot or cold side will not stop
Only hot or only cold water keeps coming in, or one temperature setting overfills worse than the other.
Start here: That points to one side of the washer water inlet valve assembly sticking open.
Most likely causes
1. Washer water inlet valve stuck open or leaking through
If water keeps entering with the washer unplugged, the valve is not closing mechanically. This is the most decisive clue on this problem.
Quick check: Unplug the washer while it is filling. If water still flows, shut the supply valves and suspect the washer water inlet valve.
2. Washer pressure hose loose, split, kinked, or clogged
The washer uses air pressure from the tub to tell when the water level is high enough. If that signal never reaches the sensor, the washer keeps calling for water.
Quick check: Look for a small hose from the tub area up to the pressure sensor. Check for cracks, soap buildup, pinches, or a hose that slipped off.
3. Blocked air dome or pressure chamber at the tub
Even with a good hose, a plugged pressure port at the tub can keep the water level signal from building correctly.
Quick check: Inspect the lower hose connection area for sludge or residue where the pressure hose meets the tub side or air dome.
4. Washer water level sensor or main control not reading level correctly
If the hose and air path are intact and the valve closes normally when power is removed, the sensing side may be misreading the tub level.
Quick check: After confirming the hose is sound and seated, watch whether the washer ever recognizes a full tub or just keeps energizing the valve until you stop it.
Step-by-step fix
Step 1: Stop the water and separate the two main failure patterns
This is the fastest safe check and it prevents a floor flood while you diagnose.
- Pause the cycle if you can, then unplug the washer.
- If water is still entering the tub, shut off both household water supply valves behind the washer right away.
- Mark down what happened: did the water stop only after unplugging, or only after shutting the supply valves?
- If the tub is already too full, do not start another wash cycle just to test it again.
Next move: If unplugging stops the fill immediately, the valve may still be okay mechanically and the washer is likely being told to keep filling. If water keeps flowing with the washer unplugged, the washer water inlet valve is the leading cause.
What to conclude: Power-off filling points hard at a mechanical valve problem. Cycle-only overfilling points more toward the pressure hose, air dome, sensor, or control side.
Stop if:
- Water is already spilling onto the floor.
- The shutoff valves will not close fully.
- You cannot safely reach the plug or water valves without standing in water.
Step 2: Check for a slow seep or one-sided fill from the inlet valve
A failing inlet valve does not always stick fully open. Sometimes it seeps into the tub between loads or only on hot or cold.
- With the washer empty and unplugged, turn the household water supply valves back on for a moment and watch the tub.
- See whether water slowly drips or streams into the basket with the washer still unplugged.
- Run a brief fill on warm if safe to do so, then switch to cold and hot settings if your model allows it and watch whether one side behaves worse.
- Listen near the valve area at the back of the washer for a steady hiss even when the machine should not be filling.
Next move: If you catch water entering while the washer is unplugged, you have enough evidence to replace the washer water inlet valve. If no water enters with power removed, move on to the pressure hose and sensing path.
What to conclude: A seep or one-temperature overfill still supports a bad washer water inlet valve, usually one side of the valve assembly.
Step 3: Inspect the washer pressure hose from end to end
This is the most common non-valve cause of a washer that keeps filling during a cycle.
- Unplug the washer and pull it forward enough to work safely.
- Locate the small washer pressure hose running from the tub or air dome area up to the water level sensor.
- Check both ends to make sure the hose is fully attached and not loose.
- Look and feel for splits, rub-through spots, sharp kinks, or a hose flattened behind the cabinet.
- If the hose is dirty at the ends, remove it and clear residue with warm water, then let it dry and reinstall it securely. Do not poke aggressively into the sensor port.
Next move: If the hose was off, cracked, or blocked and the washer now fills to a normal level, you found the problem. If the hose looks good and is clear, inspect the tub-side pressure port next.
Step 4: Clear the tub-side air dome path and retest one small fill
Soap residue and lint can block the pressure chamber at the tub, which acts just like a bad hose.
- With the pressure hose removed from the tub-side connection, inspect the opening for sludge or packed residue.
- Wipe the outside area clean and gently clear only visible buildup at the opening.
- Reconnect the hose firmly so it seals well at both ends.
- Restore power and water, then run the smallest fill setting you have while watching the water level closely.
- Be ready to pause the cycle and shut the supply valves if the level climbs too high again.
Next move: If the washer now stops filling at the right level, the pressure path was blocked or leaking. If it still overfills only during operation and the hose path is sound, the remaining likely causes are the washer water level sensor or the control that reads it.
Step 5: Replace the confirmed part or stop and schedule service
By this point you should know whether the problem is a mechanical fill valve or a water-level sensing issue.
- Replace the washer water inlet valve if water entered with the washer unplugged or seeped into the tub between loads.
- Replace the washer pressure hose if it was split, hardened, or would not seal tightly at the fittings.
- If the hose and air dome path are good but the washer still overfills only during a cycle, plan on a washer water level sensor diagnosis or replacement.
- If you are not comfortable opening the console or tracing the sensing circuit, stop here and book appliance service with your notes from the unplug test and hose inspection.
A good result: After the repair, the washer should stop at a normal water level, advance into wash, and stay dry between loads.
If not: If a confirmed valve or hose repair did not change the symptom, the washer water level sensor or control side needs deeper diagnosis.
What to conclude: You have moved from the common mechanical causes into the less homeowner-friendly sensing and control side of the washer.
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FAQ
Why does my Samsung washer keep filling with water even when it is off?
If it fills while off or unplugged, the washer water inlet valve is usually stuck open or leaking through internally. Shut off the supply valves behind the washer until you repair it.
Can a bad pressure hose make a washer overflow?
Yes. If the washer pressure hose is loose, split, kinked, or clogged, the washer may never get the signal that the tub has reached the proper level, so it keeps calling for water.
What if the washer only overfills on hot or only on cold?
That usually points to one side of the washer water inlet valve assembly sticking open. Many washers use a combined valve body with separate hot and cold sections.
Is it safe to keep using a washer that sometimes overfills?
No. Even if it only happens once in a while, an overfilling washer can flood the room fast. Use it only for closely watched testing until the cause is confirmed and fixed.
Do I need a new control board if my washer keeps filling?
Usually not as a first move. Start with the unplug test, then inspect the washer pressure hose and tub-side air path. A stuck inlet valve or pressure problem is more common than a bad control.
Why is there water in the tub hours after the load finished?
That is a strong sign that the washer water inlet valve is seeping past internally. The washer may look off and normal, but the valve is still letting water creep into the tub.