ATK - How to delay turning back on for a day???

smariner007 · Nov 7, 2021

I have the ATK v2 run to an ATO tank/reservoir. I would like to turn off the ATK for 2-3 days and then let it fill back the ATO tank (not keep filling it up constantly like it is doing now). This would be a failsafe for when I am out of town. The ATO tank/reservoir holds about 10-15 gallons of water. Here is the current code:

Fallback OFF
Set OFF
If Swx6_1 OPEN Then ON
If Swx6_2 CLOSED Then OFF
When On > 005:00 Then OFF
Defer 000:10 Then ON
Defer 000:04 Then OFF
Min Time 060:00 Then OFF

What should I add to delay and let the ATO/tank not fill up constantly?

SuncrestReef · Nov 8, 2021

The typical way to do this is to place the low sensor at the bottom of the reservoir, and the high sensor near the top. This means you need to separate one of the optical sensors from the ATK magnet mount to be able to place them further apart. Then, use this code:

Fallback OFF
If ATO_Lo OPEN Then ON
If ATO_Hi CLOSED Then OFF

Notice there is no "Set OFF" command. That is what causes the pump to turn off the moment the low sensor detects water. But in the case of refilling a reservoir, you want the pump to continue running until the upper sensor turns it off, so removing the Set OFF command allows this to work.

See my series of Apex tutorials for more tips: