Just a quick note to those that haven’t (yet) removed their Exhaust Fan Impeller for cleaning. The Bullet manual is very thin on information about removing and replacing the Exhaust Impeller Fan.
Removal is easy and cleaning is not just a simple soak in some diluted Urnex. Some in-between the blades scrubbing is necessary to get the gunk that traps at the bases of the fan blades. I used what is often referred to as a “straw brush” to get in-between the blades and clean them completely. That kind of brush is about the diameter of a large plastic straw that is commonly sold with drink bottles. It fits between the blades without forcing them to bend or deform.
Replacing the Fan Impeller is as easy as it is to get off with one important word to the wise. Don’t push the Impeller all the way back as far as it will go when you reinstall it. It will touch the surface behind it enough that it will not allow the Impeller to rotate. Instead pull it forward enough such it spins freely, but does not extend beyond the outside flange where the Impeller fits through.
If the Impeller doesn’t spin freely, you will get a “A-01” error which correctly means the Exhaust Fan is not turning. How do I know this…? The odd thing is that the Bullet does not check the Exhaust Fan until the roaster has completely Preheated, the “Charge” statement is issued and it goes into “The Roast has started” mode. I really think the Bullet should check to see that the Exhaust Fan is spinning upon completing the start-up checks before saying “The Bullet is ready”. Clearly if that Exhaust Fan is not able to spin, the Bullet is not ready.