To see or ride on a Ferris wheel in your dream, suggests that you are going around in circles. You are headed no where. Alternatively, it is symbolic of wholeness and the circle of life. Life is full of ups and downs.
Perspective or vision: needing it, wanting it, or having it
Ability to see the "big picture" (the whole situation, problem, environment, strategy, etc.)
The idea of going around and around, such as circular logic or a feeling of "getting nowhere"
The need for a change of perspective or a change of pace in your life
Also, consider the context and your feelings:
If you want to get off the ferris wheel but can't, it might mean you're feeling stuck in a
Seemingly never-ending situation
If the ferris wheel gets stuck while you're on it, it may represent getting stuck or stranded in real life somehow
If you want to get onto the ferris wheel but can't, this could represent a need to get some perspective about your life