I've had this same issue, does anyone know if this could be fixed by replacing the magnetized pieces inside? In all honesty, I need a new one, but seems like such a waste to buy a new filter when it could be salvaged.
I pulled it apart, and found that the pieces were basically disintegrating. I could play around with the part to get my impeller to spin again, but it would just lock back up.
I pulled it apart, and found that the pieces were basically disintegrating. I could play around with the part to get my impeller to spin again, but it would just lock back up.