We have a digital washer by Kenmore. It is the Elite Calypso version. We bought it off a friend that said it was only a few years old but she lost the manual. When we try to use it, the washer will start then halt and C1 or Cl (not sure which it means) pops up. What is wrong with it? What does that mean?

Here is the manual: https://dl.dropbox.com/u/8010163/Kenmore_Elite_Calypso%20Washing_Machine.pdf