Error code
Samsung Washing Machine Error Code UB1
The washer has detected a serious load-balance problem while trying to spin. The most likely cause is bulky or waterproof items creating a severe imbalance. Check first: open the door and redistribute, reduce, or separate the load so it can balance properly.
Quick answer
UB1: what does it mean and how to fix
What does it mean?
The washer has detected a serious load-balance problem while trying to spin.
How to fix first
Turn the machine off and wait for the drum to stop moving fully.
Why is this happening?
Bulky or waterproof items creating a severe imbalance
When should I call an engineer?
Call an engineer if UB1 appears on a light, evenly distributed load or the washer continues to bang heavily after rebalancing.
What does this error code mean?
Samsung washing machine error code UB1 usually means the load is too uneven for the machine to spin safely. In most cases, that is caused by a heavy item tangling up on one side of the drum, overloading, or a waterproof or bulky load that will not balance properly.
Check first whether the load is bulky, tangled, or too small to spread around the drum evenly. If the issue is milder you may also see Samsung UB or Samsung UE, but UB1 usually means the imbalance is more severe.
In practice, UB1 is commonly linked to Bulky or waterproof items creating a severe imbalance, Overloaded or underloaded drum, or Laundry tangled into one heavy mass on one side of the drum.
Why is this happening?
- Bulky or waterproof items creating a severe imbalance
- Overloaded or underloaded drum
- Laundry tangled into one heavy mass on one side of the drum
How to fix this safely
- Turn the machine off and wait for the drum to stop moving fully.
- Open the door and redistribute, reduce, or separate the load so it can balance properly.
- Run one spin test only after rebalancing the drum; if the machine still cannot spin even with a lighter load, compare the fault with Samsung UB or Samsung UE.
Can I fix this myself?
YesUB1 is often worth fixing yourself first because load redistribution and running a more balanced spin test are the main safe actions.
Safety boundary: Stop if the machine keeps banging violently on a balanced load, or if the next step would involve inspecting suspension or internal drive parts.
When to call an engineer
Call an engineer if UB1 appears on a light, evenly distributed load or the washer continues to bang heavily after rebalancing.
Safety warning
Do not force the machine through repeated spin attempts if it is shaking or banging hard.
Useful hub links
Related balance and spin fault codes
Samsung Washing Machine Error Code UE
Load balance or spin detection problem
Samsung Washing Machine Error Code UB
The load is too unbalanced for safe spinning
Samsung Washing Machine Error Code PC
The washer cannot confirm the motor or clutch position correctly.
Samsung Washing Machine Error Code PC1
The washer is not getting the clutch or position feedback it expects from the drive system.
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 UB1 showing?+
Only after you redistribute the load properly. Do not keep forcing the washer to spin with a badly unbalanced drum.
Will resetting clear Samsung UB1 permanently?+
Only if the underlying problem was the load itself. If UB1 returns on balanced loads, the issue may be mechanical.
Is Samsung UB1 dangerous?+
It can be if the machine is shaking violently, because repeated heavy imbalance can damage the suspension, drum movement, or surrounding floor.