Error code
Samsung Washing Machine Error Code UB
The load is too unbalanced for safe spinning The most likely cause is unbalanced or very small load. Check first: redistribute the laundry and separate heavy bundled items such as towels, bedding, or bath mats.
Quick answer
UB: what does it mean and how to fix
What does it mean?
The load is too unbalanced for safe spinning
How to fix first
Turn the machine off and let the drum come to a complete stop.
Why is this happening?
Unbalanced or very small load
When should I call an engineer?
Call an engineer if UB happens with normal loads, the drum bangs heavily, the machine moves across the floor, or levelling and load changes do not help.
What does this error code mean?
Samsung washing machine error code UB usually appears when the drum cannot balance the laundry well enough to spin safely. It is often load-related, especially with one heavy item, a very small load, or mixed items that clump together.
This code usually points to load balance and spin monitoring rather than a drainage or power fault.
Start with this safe check: Turn the machine off and let the drum come to a complete stop. If the code returns, the fault worsens, or the appliance does not behave normally, call an engineer if UB happens with normal loads, the drum bangs heavily, the machine moves across the floor, or levelling and load changes do not help.
Symptoms users may notice
- The drum may fail to reach full spin speed.
- Laundry may be bunched on one side of the drum.
What users often notice
- The machine may repeatedly try to redistribute the load before showing the code.
Why is this happening?
- Unbalanced or very small load
- Machine not standing level
- Heavy item absorbing water and sitting on one side of the drum
- Suspension wear or spin sensing issue if it happens with normal loads
What this usually points to
This code usually points to load balance and spin monitoring rather than a drainage or power fault.
How to fix this safely
- Turn the machine off and let the drum come to a complete stop.
- Redistribute the laundry and separate heavy bundled items such as towels, bedding, or bath mats.
- Add a few similar items if the load is too small to balance.
- Check the appliance is level and not rocking on the floor before trying another spin.
What not to do
- Do not keep forcing a high-speed spin with one heavy item or a visibly unbalanced load.
- Do not overload the drum to compensate for UB; aim for an even, washable load instead.
Reset steps
- Restart the spin after redistributing the load.
- Use a lower spin setting for mixed or bulky loads.
- If UB returns with a normal balanced load, stop testing and arrange diagnosis.
Intermittent vs persistent faults
A single UB code with a heavy or mixed load is often load-related; repeated UB codes with normal loads can point to suspension or sensing issues.
When to call an engineer
Call an engineer if UB happens with normal loads, the drum bangs heavily, the machine moves across the floor, or levelling and load changes do not help.
Safety warning
Disconnect the appliance from the mains before making any physical checks around the drum or installation position.
Useful hub links
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Samsung Washing Machine Error Code UE
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After resolving this fault, use the right wash setting to help prevent repeat issues.
Relevant guide
Frequently asked questions
Can I keep using a Samsung washing machine with UB showing?+
You can usually pause and rebalance the load, but do not force repeated high-speed spins if the drum is banging or the machine is moving.
Why does UB happen with one towel or bath mat?+
Single heavy items can hold water and sit on one side of the drum, making it hard for the washer to balance before spin.
Is UB a drain problem?+
Not usually. UB is a balance and spin warning. If the drum is still full of water, check for a separate drainage issue as well.
When is UB more than a loading issue?+
If it happens with ordinary mixed loads on a level machine, worn suspension, a sensor issue, or another spin-related fault may be involved.