Error E025. With water in the bottom. Turned off/on ran for about 30 secs, the pump running within this time sounds struggling. When door opened it appeared to have drained. Checked impeller area, for debris - found non. Impeller felt to have a bumpy resistance. Is the bumpy resistance normal? After short wash..E025, a reboot/wash would not clear water. Checked for blockages, cleared drain pipe, drain waste disposal pipe at large tank LHS. Now comes up with E015?