I’m an owner like you; from what you describe I feel you have a clutch issue if you’re machine is a FAV6800AW or FAV9800AW. I'll bet it completes the spin cycle with no clothes in the wash basket. Here is what is happening
See this post
for a step by step process to remove the clutch.
Try a maintenance clean up of the One-way Roller Clutch bearing and see if that will get you back in service, if not I would do a Clutch replacement.
Your machine is shutting down the spin cycle with dc and UC errors so your Tub Displacement Sensor is working as designed.
From the Service Manual page 12;
During fill cycle – If machine tumbles and spins simultaneously replace clutch assembly.
During spin cycle – If machine tumbles and spins simultaneously replace clutch assembly.
You can check this out by turning off the water supply lines if you check during water fill cycle. Lift the washer top from the base and observe the action during water fill or spin cycle.
The Service Manual will show you how to raise the washer top from the base.
This is happening because the clutch One-way Roller Bearings are sticky, slightly rusted. When the machine enters spin cycle the agitator shaft is slightly engaged because the one-way roller clutches are dragging this will cause the agitator shaft to rotate in spin cycle spinning the tumblers slightly.
In this condition the wash load is tossed about while the wash basket begins to spin up.
This will cause the Tub to become unbalanced and the tub starts making greater swings.
This continues until the TDS (Tub Displacement Sensor) signals an unbalance condition to the Control Board and shuts the cycle down with a dc or UC unbalance errors.
If the TDS fails in this mode the machine would likely walk across the floor until it unplugged itself or ended in a self-destruct.… :)
A WD-40 clean up and re-lube may get you back in service.
Just follow this posting
step by step.
If you are not a DIY type direct your service repair to this e-mail to help speed you to repair and control cost.
You can redistribute the wash load until the cows come home and you will continue to fail with UC or dc unbalance errors….
Fix the clutch issue and your machine will be happy and so will the owner.