I have a similar problem... TransGlobal repair guy called Samsung engineer and they say E3 means the machine is overloaded. I get this with a week of underwear and socks for a single guy. It's been getting weaker and weaker the last few months so I just put in one then two then three fewer towels in the heavy loads. Now it will spin but not agitate with any size load.
The problem I get is that it tries to turn in the clean cycle about 6 or 7 times I hear a sort of tinkling sound as it slips then after a few tries it throws the E3 error. Lightening the load had worked until the last load when it wouldn't even spin a shoebox sized load of underwear. TransGlobal says there's nothing they can do and Samsung is blaming me for overloading the washer.
If you happen upon this and are thinking of buying a Samsung machine run! Buy something that people can fix like any of the domestic products such as Whirlpool, Maytag, Kenmore... Much better support and techs that know what they are doing.
flatlander, February 2009