I would go to their website and find your model and download the manual. Most of the time it is pretty easy to pop out a fan unit and install a new one. Also when you open it up you may find that it’s just a broken bracket of some type, or a bolt or nut worked its way loose.
I would expect it to last decades, 8 years is very soon for the fan unit to break down.
At the least, if any repairs are beyond what you are comfortable attempting, let us know the model number and I can take a look at the manual.
