Why won't my Samsung washer door lock?

If the Samsung washer door won't lock, the door latch or door lock actuator has likely failed. Less commonly, the control board is not sending the lock signal. Try unplugging the washer for 60 seconds and restarting. If the door still won't lock and the display shows a door lock error, the door lock assembly needs replacement — a certified technician repair.

Why is my Samsung washer not draining?

Samsung washers most often stop draining due to a clogged pump filter (the small round access panel at the front bottom of the machine) or a kinked drain hose. The pump filter catches coins, lint, and small items and should be cleaned every 2–3 months. If the filter is clean and the hose is clear, the drain pump itself may have failed and needs replacement.

Most Common Samsung Washer Problems & Fixes (2026)

Q: Why does my Samsung washer vibrate or shake violently?

Severe vibration on Samsung front-load washers is often caused by shipping bolts left in place during installation, an uneven floor, or a worn shock absorber. Check that the four shipping bolts were removed from the rear of the washer when it was installed. Also check that all four feet are in firm contact with the floor and the washer is level side-to-side and front-to-back.

Samsung is one of the most popular washer brands in Canada — and one of the most commonly repaired. From the notorious Sud code to UE unbalance errors, door lock failures, and leaking door seals, this guide covers every major Samsung washer problem with the exact cause, the right fix, and when it's time to stop DIYing and call a certified technician.

Problem 1: Sud / Sd Code (Excessive Suds)

SUD / Sd Excessive Suds Detected

Cause: Using regular (non-HE) detergent in a high-efficiency Samsung washer, or using too much HE detergent. Front-load washers use much less water than top-loaders — excess suds can't rinse out and trigger the error.

Fix: The washer will add extra rinse cycles automatically to clear the suds. Switch to HE-labeled detergent only, and use approximately half the recommended amount. If using pods, use one pod maximum per load. Run a drum clean cycle monthly to clear soap residue.

Call a tech if: The Sud error appears even with correct HE detergent amounts, or if the washer gets stuck in a continuous rinse loop and won't complete the cycle.

Problem 2: UR / UE Code (Unbalanced Load)

UR / UE Unbalanced Load

Cause: The drum is unevenly loaded, causing vibration that exceeds the safety threshold during the spin cycle. Common with single heavy items (jeans, towels, bath mats) that clump to one side when wet.

Fix: Open the door and redistribute clothes evenly around the drum. Add a few similar-weight items to help balance. Restart the spin cycle. For large heavy items like comforters, use a laundromat commercial-size machine.

Call a tech if: The UE error appears frequently on normally-loaded balanced loads — this can indicate worn shock absorbers or a damaged drum bearing that needs professional inspection.

Samsung SUd tip: You can find more detailed fixes for the Samsung washer Sud code in our Samsung Washer Sud Code guide. For the UR code, see our Samsung Washer UR Code guide.

Problem 3: Door Won't Lock

Door Lock / dL Error

Cause: The door lock assembly (door latch and lock actuator) has failed mechanically or electrically. The washer will not start a cycle unless the door lock confirms it's sealed. Less commonly, the control board has failed to send the lock signal.

Fix (DIY): Unplug the washer for 60 seconds to reset the control board, then restart. Check that nothing is caught in the door seal preventing it from closing fully.

Call a tech if: The door still won't lock after a reset and the display shows a door lock error code. Door lock assembly replacement requires opening the door panel — a certified technician repair. Cost: $120–$200.

Problem 4: Violent Vibration & Shaking

Excessive Vibration During Spin

Cause: Most commonly, shipping bolts were not removed during installation (common on front-loaders — four large bolts at the back of the machine secure the drum for shipping). Also: uneven floor, unlevel washer, worn shock absorbers, or a damaged drum bearing.

Fix: Check the rear of the washer for 4 blue or yellow plastic-covered shipping bolts and remove them. Level the washer using adjustable feet — all four feet must touch the floor. Use a spirit level on top of the machine.

Call a tech if: Shipping bolts are removed and the machine is level but vibration is severe. Worn shock absorbers or drum bearings require disassembly. Cost: $130–$280.

Problem 5: Not Draining

5E / SE Drain Error / Water in Drum After Cycle

Cause: Clogged pump filter (most common), kinked drain hose, or a failed drain pump motor.

Fix: Locate the small circular access door at the front bottom of the washer. Have towels ready — remove the cap and drain the residual water slowly. Remove and clean the filter — coins, hair pins, lint, and small items accumulate here. Clean monthly.

Call a tech if: The filter is clean and hose is unkinked but the washer still won't drain. A failed drain pump requires replacement by a technician. Cost: $130–$230.

Problem 6: Leaking Water

Water Leaking From Door or Under Machine

Cause: Front-load Samsung washers most commonly leak from the door boot gasket (the rubber seal around the door opening). The gasket develops mold in its folds and can tear from sharp items in pockets. Leaks from underneath typically indicate a pump hose or tub connection.

Fix: After each wash, wipe the door seal dry and leave the door open 30 minutes to prevent mold. Check the gasket for tears or holes — if the tear is visible, water leaks past it during the wash cycle.

Call a tech if: The door seal is torn or heavily damaged. Door boot gasket replacement costs $150–$250 with labour and requires removing the door and front panel.

Frequently Asked Questions

Sud (or Sd) means the washer has detected excessive suds. This is almost always caused by using regular detergent instead of HE (High Efficiency) detergent, or using too much HE detergent. The washer will automatically add rinse cycles to clear the suds. Use only HE detergent and use less than the recommended amount.

UR and UE both indicate an unbalanced load. The washer detected the drum is off-balance and stopped the spin cycle. Open the door, redistribute the clothes evenly around the drum, and restart. Heavily soaked single items are common culprits — add a few towels to help balance the load.

If the Samsung washer door won't lock, the door latch or door lock actuator has likely failed. Try unplugging the washer for 60 seconds and restarting. If the door still won't lock and the display shows a door lock error, the door lock assembly needs replacement — a certified technician repair.

Severe vibration is often caused by shipping bolts left in place during installation, an uneven floor, or worn shock absorbers. Check that the four shipping bolts were removed from the rear of the washer. Also confirm that all four feet are in firm contact with the floor and the washer is level.

Samsung washers most often stop draining due to a clogged pump filter at the front bottom of the machine. The filter catches coins, lint, and small items and should be cleaned every 2–3 months. If the filter is clean and the drain hose is unkinked, the drain pump itself may have failed and needs replacement.

Leaks on Samsung front-load washers most commonly come from the door seal (door boot gasket), especially if dark mold is visible in the folds. The seal can tear from sharp objects in pockets or general wear. Door seal replacement costs $150–$250 with labour.

Most Samsung washer repairs fall in the $150–$350 range. Door lock assembly: $120–$200. Drain pump: $130–$230. Door boot seal: $150–$250. Control board: $180–$350. Nick's Appliance Repair charges $89 for diagnostics, waived when you proceed with the repair. Save $40 with our limited-time promo.