it is most likely waiting for a condition to occur, like water reaching temerature, water reaching the fill or empty level. until the condition is achieved and/or the sensor that tests for the condition says so, the machine won't go on to the next step..
checklist... did these things happen
the water fill,
did the machine start rotating,
get the water get hot,
did it try to empty and fail
is it empty but still trying to empty, making a low growling noise
various sensors are checking for all these things any one can fail.. but if you can answer these questions it will help
steve b
March 2011