[smokinreefer]

OK, so I have limited experience using the APEX and am having some challenges with my ATO.

I'm just setting it up again and seem to have gotten it to get the ATO running, but I think something is amiss.

I use a solenoid inline of the PMUP to prevent any siphoning. Even though I've now got it properly topping off water, the programming seems off.

I can see the Solenoid toggling on and off repeatedly. And just hearing the mechanical clicking the APEX makes when this happens makes me feel like this can't be good for the APEX or the Solenoid.

The Solenoid should open when the low optical sensor is open. And should close and remain closed while the low optical sensor is closed. This is where the issue seems to be. It doesn't seem to be staying closed, while the PMUP is remaining off, the solenoid is toggling on and off repeatedly.

Here is the programming I have for the Solenoid:
Fallback OFF
Set OFF
If Swx3_3 OPEN Then ON
If Swx3_3 CLOSED Then OFF

Swx3_3 is the low optical sensor to trigger the ATO.