Hi,

I have a few Profilux 3 devices that use the optical level sensor. My problem is that they seem to fail after a year or two getting stuck in
the trigged position so it no longer detects a drop in water level and start my pump.

I clean the surface of it weekly. I'm on number two now that failed after about the same period. Is this normal? Is there any way I can test
the sensor function disconnected from the profilux?

Any help appreciated.

--Mats