Product review (4 stars): Simple fix, but I've gone through three of them
I'm on my third replacement diffuser, in fairness I'm not sure if the parts are not lasting or if there's a deeper underlying problem with my fridge. The part is super simple to install, it only takes removing three screws, I've gotten the job down to about five minutes!

When the diffuser is working it works great, but the last two have only lasted about six months. Both of them have failed the same way.  It sounds like the diffuser door gears get stripped and it just clicks instead of opening.