Yikes, that`s my heater in my 125gal. And after a check of the batch number, I`m a 928
I`ll have to give Big Al`s a call tomorrow and see what they say about it. Of course there`s a recall on the heater I was suggested to buy when setting up my 125. Doubt it`ll be much of a problem to change though.
EDIT: Took it back to Big Al's, and they replaced it with an Eheim Jager 250w, so I think I'm good.