3155 overfill?

[rockryno]

Hi,

I just bought the 3155 for my 20L and set it up last night. I have a very small overflow where I placed the sensors, as that's the only place where the water level drops with evap.

I used the supplied sensor mounting plate for both sensors. When the water level drops past the tip of the eye sensor, the water comes on. But the water stays on until the eye is submerged and the float sensor shuts the water off and sounds an alarm.

What to do?

 

[rvitko]

The Osmolator deliberately overfills for a short time, this is to reduce how often in comes on and it adds about 1 cup too much, the pump speed is adjustable inside the controller, red knob on the bottom right of the board, turn this down, that will cut the flow in half so it adds about 1/2 cup and move the float and optic sensor as far apart as possible (the optic sensor has a range of movement on the magnet holder of about 1cm, make sure it is all the way down).

 

[rockryno]

turned the knob to nano. I adjusted the optical mount down to its lowest setting. In my tank, that extra 10 seconds was just enough to trigger the float sensor. Looks like its working perfectly now. Thanks!

 

[Ruckus16]

Do all controllers have the red knob or is it only on newer models?

 

[rvitko]

Only those made since Nov 2011.