If you look in the manual you may see in the maint section  a message to clean filter cap
 On the bottom left front of the machine is a small door
 Inside the door is a small drain hose that you have to pull out and drain  the filter housing 
 Looking straight into that opening is a big black cap that you can remove to clean the filter
 My understanding is that this has to be done twice a month and if not cleaned can cause the  UE error
 if moving clothes and and adding and taking out does not work 
 make sure machine is level and then look for the door
                
 Doc C
                
 January 2011