Problem setting up Profilux Optical Level Sensor

[Oldtimer]

I have an optical sensor on the Level 1 port in my Profilux II Plus EX. I cannot get it to switch on my ATO pump. The ATO pump is actually channel 1 on my Profilux Dosing Pump. Channel 1 is on socket #5 and I programmed this socket to be switched by function "Water 1". The maxiumum on time is set to 20 minutes. I tried to decrease the sensitivity of the sensor from 10 s to 2 s, but it did not help. The water level in my sump actually seems very stable especially in the area where this sensor is mounted. I verified that the diagnostic shows "-" when the water is not touching the sensor. When I lower the sensor to contact the water, diagnostic correctly shows "X". Strangely, the dosing pump does not turn on for either condition, but if I change Inverting Switching Behavior from normal to inverse, then the dosing pump will turn on no matter if the sensor is touching the water or not. Please help!

[Matthias]

this means that the sensor is working and the connection to ProfiLux is Ok if you see - and x when you move the sensor

water 1 is the correct setting for this "socket"

maybe there is an error at the moment?
what is the operational mode?

please post a screenshot of the level settings

[Oldtimer]

By screenshot, I'm sure you mean to take a picture of my PC, but I'm only using the controller to program, not my PC. If this is critical, I will have to setup my WLAN... I just haven't found the time to do it yet. I'm travelling out of town for a few days Wednesday morning and was hoping to have the level setup before I go.

Operational mode is set to ATO.

[Matthias]

"ATO" is correct for this purpose

I guess an error occured and must be reset (timeout overdue)

[Oldtimer]

OK, I will try to reset it and see what happens.

[Oldtimer]

Another option I'm considering is using my conductivity probe to switch on the dosing pump once conductivity rises above a certain level. Then I can use the optical sensor as a protection for the return pump just in case the water level drops much lower (perhaps 50mm lower) than where I normally keep it. This way, I'm actually adjusting based on conductivity and not evaporation...or worse, a leak which could result in a disaster since salinity could decrease significantly while the dosing unit controlled by the float sensor would keep adding fresh water. I haven't looked into setting it this way, but it seems possible. Is it?

[Matthias]

this is possible, but I guess you have to use the "programmable logic"
-> therefore you need to do the settings with ProfiLuxControl

[Oldtimer]

I did this last night and it's working fine now with conductivity control.