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Samsung Washing Machine Error Code Ub

Reviewed by the ApplianceErrors Editorial Team · Verified against manufacturer service documentation · Last verified: June 11, 2026
✓ Low Severity 🔧 Easy DIY

Unbalanced load — drum cannot reach spin speed safely

The most common cause of the Ub error on a Samsung washing machine is items bunched to one side of the drum (~45% of cases); start with: redistribute the load.

💰 DIY cost: $0–$80 👨‍🔧 Pro cost: $150–$300 Save $150+ by doing it yourself
Samsung Washing Machine error code Ub on the display panel
How the Ub code appears on a Samsung washing machine display

What Does Error Code Ub Mean on a Samsung Washing Machine?

Unbalanced load — drum cannot reach spin speed safely.

Ub is the Samsung unbalance code, distinct from the vibration-sensor 'dc'/'UE' family. During the spin ramp, the control board monitors load distribution via the drum's motion and tub sensors. If the mass stays lopsided after several redistribution tumbles, it aborts high-speed spin to shield the suspension rods, dampers, and bearing. Occasional Ub is normal; persistent Ub on evenly loaded washes points to worn suspension components or an off-level cabinet rather than the laundry itself.

Models affected: Front-load and top-load Samsung washers across most series, including front-loaders like WF45T6000AW, WF45R6100AP, WF42H5000AW and WF50BG8300AV, and top-loaders such as WA50R5400AV, WA45T3200AW and WA54R7600AV
What owners report: Owners commonly report Ub with bulky single items like comforters, rugs, or towels that clump wet, and the quick win is usually pausing to spread the load or adding a towel or two to balance it. It can also appear falsely on a washer that has shifted out of level, so rechecking the feet often helps.

What Causes Error Code Ub?

Here are the most common causes in order of frequency. Start with the most likely cause before moving to the next:

  1. 1
    Items bunched to one side of the drum 45% of cases
  2. 2
    Single heavy item like a comforter or rug 30% of cases
  3. 3
    Worn suspension rods or dampers 15% of cases
  4. 4
    Washer not level on the floor 10% of cases

How to Fix Samsung Washing Machine Error Code Ub

🔧 Easy DIY Est. time: 10–20 min
⚡ Safety first: Unplug the appliance before opening any panels or touching internal components.
  1. 1

    Redistribute the load

    Pause the cycle, open the door, and spread items evenly around the drum.

  2. 2

    Level the washer

    Use a bubble level on the top panel and adjust the leveling feet until solid on all four corners.

  3. 3

    Inspect suspension dampers

    If Ub appears on every load, the shock absorbers/dampers are likely worn and need replacement.

    🔩 Samsung suspension damper set ($35–$80)

How to Reset Error Code Ub

Redistribute the laundry, close the door, and press Start/Pause to resume.

Note: If the error returns after resetting, the underlying issue has not been resolved. Work through the fix steps above.

Full Samsung washer reset guide → Enter diagnostic mode → Symptom guide: Washer shaking or loud →

Did this guide fix your appliance?

When to Call a Professional

If even small balanced loads trigger Ub, have a technician check the suspension and drum bearing.

Average professional repair cost for this issue: $150–$300

Related Error Codes

U6
Unbalance error variant — repeated failed redistribution attempts
✓ Low Severity
UE
Unbalanced load detected
✓ Low Severity

Same Code on Other Brands

Error code Ub appears on these other brands too. See every brand that shows Ub →

LG logo
LG Washing Machine UB
Unbalanced load — washer cannot distribute the load for spin

Find Replacement Parts

Use these links to find the exact replacement parts for your Samsung Washing Machine:

🔩
Search PartSelect
Samsung Washing Machine repair parts
🔧
Search RepairClinic
Step-by-step video guides

External links — ApplianceErrors.com is not affiliated with these retailers.

More Samsung Washing Machine Error Codes

4C Water supply not detected OE Drain failure — water not draining LE Motor locked — drum cannot rotate DE Door not properly closed or door lock failure HE Water heater error — water not heating to target temperature SUD Excessive suds detected

Frequently Asked Questions

Can I keep using my Samsung Washing Machine when error Ub appears? +
Usually yes — Ub is a low-severity balance notice that rarely stops the washing machine from working, but clearing the underlying cause prevents it from escalating.
What most commonly causes Ub on a Samsung Washing Machine? +
Across reported Samsung washing machine repairs, the most frequent is items bunched to one side of the drum (45% of cases), single heavy item like a comforter or rug (30%), then worn suspension rods or dampers (15%). Check them in that order before replacing any parts.
Ub keeps coming back after a reset — what should I check next? +
A reset only clears the stored Ub fault; if it returns, the balance problem is still present. Move on to the physical checks — redistribute the load, then level the washer — since the code will reappear until the root cause is resolved. This is a beginner-friendly job needing only basic hand tools.
How much does it cost to fix Samsung Washing Machine error Ub? +
A DIY repair typically runs $0–$80 in parts, versus $150–$300 for a professional service call, so handling it yourself saves around $150. Expect the work to take about 10–20 minutes.
Which Samsung Washing Machine models show error Ub? +
Ub is documented on Front-load and top-load Samsung washers across most series, including front-loaders like WF45T6000AW, WF45R6100AP, WF42H5000AW and WF50BG8300AV, and top-loaders such as WA50R5400AV, WA45T3200AW and WA54R7600AV. Other units sharing the same control platform can display it too, so the fixes here generally transfer across the series.

Sources & References

Content verified against manufacturer service documentation. Last verified: June 11, 2026.

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