Cause

[ub] is an information code indicating washer detects out-of-balance load and is automatically attempting to balance. Washer will add water and try to redistribute load. If successful, cycle continues and display of [ub] may alternate with time left in cycle. [ub] display is for information only; no action (or service) required.

Solution

Cycle selection is critical for washer stability.  Refer to owner’s manual

To prevent an out-of-balance load, do not wash single items. Add one or two similar items to the load. Large, bulky items, such as a blanket, comforter, or bedspread, should be washed individually.

Bulky Bedding cycle is ONLY for large items and is only cycle that does not load sense (filling the wash basket with water) small items should not be mixed with bulky items.

Per Owner’s Manual: “Use the BULKY/BEDDING cycle for large or bulky items such as poly-filled jackets, comforters, pillows, etc. These items may not be as absorbent as other laundry items and should be sorted into a separate wash load for optimal results. Bulky items should be placed as far down in the tub as possible for optimal results. Always place buoyant items at the bottom of the tub. The washer will automatically detect the load size. Because of the high-efficiency wash system, the water level may not completely cover the load..”