ATO Code

[Spyderturbo007]

I'm trying to avoid the failure that occurred last night and is partially responsible for injuring one of my fish.

My filter socks clogged causing the #1 section to fill up until it hit the spillover. Because of that, my ATO (float switch in 3rd section) dumped the entire 2g of the Kalk Reservoir into the tank. Now my female banggai is swimming in circles having spasms. :sad2:

Here is my current ATO code:

Fallback OFF
If Switch1 CLOSED Then ON
If Switch1 OPEN Then OFF
If pH > 08.40 Then OFF
Defer 000:30 Then ON
Min Time 015:00 Then OFF

To be honest, I'm don't really understand the last two lines. I'm assuming that the Defer command keeps the pump off for 30 seconds, but I'm unsure about the Min Time statement.

Either way, is there a way to keep this thing from running for more than X minutes, or some other way for the controller to recognize that this is an abnormal condition? It normally runs for about 3 - 5 minutes, but this time is was on for almost 1h 45 minutes straight.

Is there any way to prevent this in the future? Or even other suggestions that might help?

I'm so sad about my Banggai and am praying that she recovers. I can't take another loss this week. :uhoh3:

 

[jduck]

Defer 000:30 means it will wait 30 sec before it turns on. This resets every time the float switch 1 closes.
The Min time 015:00 means that the ato will run for 15 min even if the switch1 is open.
Remove this line of the program. It's used more for MH lights to make sure there is time min time between firing up bulbs so you don't blow them out.

Perhaps look at putting in another float in section 1.