Ok, first question. Is it a steady beep once a second or is it a rippling musical sound like you get when you turn power on at wall. The first is an error beep & should have an error code showing along the top row. The 2nd sound is a user warning signal to tell you something is not right that the user can correct. It will have a light blinking. If either the hot temp, cold temp, or both are blinking it is telling you it is not getting enough water. Water level high blinking usually happens if it is overloaded i.e. heavy blanket. Fast spin light blinking means it can't get up to fast speed usually out of balance. I suspect yours will be the rippling sound with the water temp lights flashing because you say it is taking over half hour to fill. When it is filling, is the water coming in fast or just trickling in with a strange hissing sound?
Lincoln Appliance NZ, January 2014