Problem is with the top floating sensor on the osmolator setup. It has started beeping as if the water level is too high even though the water is on the photo sensor level. First time it happenned it sort of started working again after a couple of days. This time I got really curious and had a close look at a sensor. I have noticed that there is a lot of black sticky goo where the white nut screws up and the grey wire goes into a sensor tubu=ing. I pulled the wire slightly and it got pulled out from the white thingy all covered in that black goo. The unit is not working. What is the fix? Can I use the osmolator without the top sensor?