Another reader helped me out by commenting that if your machine is older than a couple years, often the soap solution will gum up the heater core. Disassemble the heater and clean the channels in the unit of the built up gunk. I found this out only after replacing the solonoid and pump only to have it still not work.
Aaron
June 2009
Automatic Answer
We may have found other answers which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix vacuum cleaners.