Originally Posted by woodchuckie
You have a solenoid switch which switches the dispenser back and forth from crushed to cube. It could be stuck or not working or the parts connecting it could be disconnected or broken. You will have to observe to see if any parts are moving and if any noise is coming from the solenoid.
Post your model number for diagrams of parts. Model Number Locator
What does the solenoid look like and where typically is it located?