Tunze osmolator nano stays off

[flyinbryan4295]

I have a Tunze osmolator nano for my auto top off. After it cycles off due to water level reaching the set point it stays off even after the water drops inches below the fill line. If I unplug it, it starts working again, filling the chamber as desired. However after it fills and shyts off, it stays off again, and does not start back up. It seems the only way to reset it is to unplug it. Does anyone have any ideas on how to get it running and cycling properly?

 

[WIReefer]

Had the same problem the other week give my thread a read maybe it will help. I have yet to get it working properly.

Problems with tunze nano 3152 ATO

Have had this ATO running for roughly 8-9 months now without any problems. The other day it just stopped working. I inspected all wiring and connections seemed fine, cleaned the float valve. And still acting up, if I move float valve by hand it works fine. Once I place in sump it seems to no...

www.reef2reef.com

 

[flyinbryan4295]

Had the same problem the other week give my thread a read maybe it will help. I have yet to get it working properly.

Problems with tunze nano 3152 ATO

Have had this ATO running for roughly 8-9 months now without any problems. The other day it just stopped working. I inspected all wiring and connections seemed fine, cleaned the float valve. And still acting up, if I move float valve by hand it works fine. Once I place in sump it seems to no...

www.reef2reef.com

Thank you for the link. What I discovered was that the pump was not fully submerged in the reservoir, so it ran the full time, causing the power cycle to be discontinued. Since the sump evaporated enough water that it would take more than one full power cycle to fill it, the pump kept going back to turning itself off completely.