Issue with Tunze Nano ATO

[Flatlandreefer]

I have a Tunze Nano ATO, the one with only the float switch. I used it for a pico aquarium for about 6 months and then shut down that system. I went to use it again and I am having issues with the float sensor. The sensor seems to work to shut the pump off but it does not work to kick the pump back on when the water level drops. Is there any trouble shooting that I can do or is it simply the result of a faulty float switch?

 

[cromag27]

I have a Tunze Nano ATO, the one with only the float switch. I used it for a pico aquarium for about 6 months and then shut down that system. I went to use it again and I am having issues with the float sensor. The sensor seems to work to shut the pump off but it does not work to kick the pump back on when the water level drops. Is there any trouble shooting that I can do or is it simply the result of a faulty float switch?

if it’s clean, then i would say it’s bad.