** the manufactures web site does not show any ECP series ice makers! **
Maybe it's an older model which is no longer being sold? Did you try contacting them and asking?
Just because it may not be a current model doesn't necessarily mean they can't help you with it.
BTW. I did find the parts list for it at their site. If you have an Adobe Acrobat .PDF file viewer, you can see it at the following link:
LINK > ECP400-500-556 Air and Water Cooled
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