Meaning
Unbalance error — the drum could not distribute the load for spin.
Symptoms
Spin retries, loud thumps, clothes piled on one side.
Possible causes
Single heavy item, overloading, shock absorbers on some models.
Safe checks
Redistribute the load. Mix large and small items. Run a spin-only cycle.
When to call a technician
If the code returns after the safe checks, stop and request a technician. Error meanings can vary by model — read the sticker inside the door and the model’s manual.