5UD is a Samsung washer error that means the drum is not draining properly

When your Samsung washer displays 5UD, the machine has detected that water is not leaving the drum at the expected rate during the drain cycle. This is not a mechanical failure of the washer itself — it is a signal that something is blocking the water's path out of the machine. The washer stops the cycle to prevent water from backing up into your clothes or flooding the interior.

The error appears on the display panel and the washer will not complete its cycle until you address the blockage. Most of the time, the fix is straightforward and does not require a technician.

Key Takeaways

  • 5UD means water is not draining from the drum, usually because of a clogged drain hose, pump filter, or standpipe.
  • Check the drain hose first — it is the most common culprit and the easiest to clear yourself.
  • The pump filter (a small compartment on the front or bottom of the washer) traps lint and coins and should be cleaned every few months.
  • If the hose and filter are clear, the drain pump itself may be failing and will need replacement by a technician.

How to clear a clogged drain hose

The drain hose is a rubber tube that runs from the back of your washer to either a standpipe (a vertical drain pipe in your wall) or a sink. Over time, lint, hair, and detergent buildup can narrow or block this hose. Before you start, turn off the washer and unplug it from the wall outlet.

Locate the drain hose at the back of the machine. It is usually held in place with a clip or bracket. Disconnect it from both the washer and the drain outlet. Hold the hose over a bucket or bathtub and pour hot water through it from the washer end. If water does not flow freely, use a plumbing snake or a straightened wire coat hanger to push the clog through. You can also soak the hose in hot water with a commercial drain cleaner for 30 minutes, then flush it again. Once water runs clear, reconnect the hose, plug in the washer, and run a test cycle.

Clean the pump filter to remove trapped debris

Your Samsung washer has a small filter inside the pump that catches coins, buttons, and lint before they damage the drain pump. This filter needs to be emptied regularly — Samsung recommends checking it every few months, or sooner if you wash items with loose buttons or coins.

The pump filter is located on the front or bottom of the washer, behind a small access panel. Unplug the washer first. Open the panel by pressing or unscrewing it (check your model's manual for the exact method). You will see a cylindrical or cartridge-shaped filter. Turn it counterclockwise to unscrew it and pull it out. Empty any debris into a trash can, then rinse the filter under running water. Screw it back in firmly — hand-tight is enough — and close the access panel. Plug the washer back in and run a test cycle.

Check the standpipe and household drain

If the hose and pump filter are both clear, the problem may be in your home's plumbing. The standpipe (the vertical drain pipe that the hose connects to) can become clogged with lint or hair, or your household drain line may be backed up. Remove the drain hose from the standpipe and run water into it directly from a bucket. If water backs up or drains very slowly, the blockage is in your plumbing, not the washer.

You can try to clear a standpipe blockage yourself using a plumbing snake pushed down from the top, or you may need to call a plumber. If your household drain is backed up, you will notice slow drainage in other fixtures like sinks or showers — that also requires a plumber.

When the drain pump needs replacement

If the hose is clear, the filter is clean, and your household drain is working, the drain pump itself may have failed. The pump is an electric motor that forces water out of the drum, and it can wear out or burn out over time. You will hear a humming sound during the drain cycle but no water will leave the drum.

Replacing the drain pump requires removing the front or back panel of the washer and disconnecting electrical connectors — this is not a task for most home owners. Contact a Samsung service center or a local appliance repair technician. Bring your washer's model number (found on a sticker inside the door frame or on the back) so the technician can order the correct pump.

How to prevent 5UD errors in the future

Clean the pump filter every two to three months, or more often if you wash items with loose buttons, coins, or heavy lint (like towels or blankets). Check the drain hose once a year for kinks or damage — a kinked hose will restrict water flow and trigger the error. Make sure the hose is not bent sharply where it connects to the washer or the standpipe.

Empty pockets before washing and use a mesh laundry bag for small items like socks or delicate pieces. Keep the area around the washer clean so lint does not accumulate near the drain connection. These straightforward steps will reduce the chance of blockages and keep your washer draining normally.

Frequently Asked Questions

Can I run the washer again right after the 5UD error appears?

No — the washer will not complete the cycle until the drainage problem is fixed. Running it again will produce the same error. Unplug the washer, clear the blockage, and then try again.

Is 5UD the same as a flood error?

No. 5UD means water is not draining out. A flood error (usually displayed as "UE" or "1E") means water is not draining fast enough and is backing up into the drum. Both point to drainage problems, but 5UD is specifically about the drain cycle failing.

What if I clear the hose and filter but the error comes back when ready?

The pump may be failing, or there may be a blockage deeper in your household plumbing. Run water into the standpipe directly to test whether your home's drain is working. If it is slow or backed up, contact a plumber. If it drains normally, the pump likely needs replacement.

Can I use chemical drain cleaner in my washer to fix 5UD?

No — chemical drain cleaners can damage the rubber hoses and seals inside the washer. Stick to hot water, a plumbing snake, or removing and cleaning the hose and filter by hand.

Does 5UD mean my washer is broken?

Not necessarily. Most 5UD errors are caused by a clogged hose or filter, which you can clear yourself in 15 to 30 minutes. Only if the hose, filter, and household drain are all clear does the pump itself need professional repair.