The first thing I would check is the water feeding tube into the ice maker for frost inside.
If it is frozen up, defrost it using a hair dryer and replace the water inlet valve (#10 on the
ice maker parts break down diagram).
- The part number for the water inlet valve is
AP3160649
Here are the break down diagrams for the Whirlpool refrigerator
Model ED5FHEXMT00
Gene.