Defer Statement to Prevent ATO from turning on every minute.

[wyattray]

My float switch is causing my ATO to fire every minute or so for about 30 minutes, I think this may have to due with location of the switch and I plan on fixing it in a few days. But in the mean time is the defer command the right command to basically keep the ato from only turning on once every 30 minutes.

My current program.

Fallback OFF
Set OFF
If pH > 8.40 Then OFF
If ATO_SW CLOSED Then ON
If Sump_H CLOSED Then OFF
If FeedA 010 Then OFF

[zombie]

This is what you want to do exactly what you asked for (note your pH line was in the wrong place and there is also a min time then on added to prevent short cycling the other way)

Fallback OFF
Set OFF
If ATO_SW CLOSED Then ON
If Sump_H CLOSED Then OFF
If pH > 8.40 Then OFF
If FeedA 010 Then OFF
Defer 030:00 Then ON
Min Time 000:30 Then ON


With that said, You have no failsafes other than a second float to protect your tank if they were to fail. Please read up on this thread for ideas and the "When" command thread I linked on the last post of the thread for ideas.

https://forum.neptunesystems.com/sho...-ATO-Failsafes

You might be an engineer if...You have no life and can prove it mathematically.

[wyattray]

The Fail safe is the Sump_H (Sump High) is that in the right place?

[zombie]

It is in the right place, but I would check and make sure it is oriented correctly for your code (shows OPEN when down and closed when up). Usually floats are done the other way (open when up, CLOSED when down). If it is oriented OPEN when up, CLOSED when down, The sump_h line needs to say open instead of closed.

You might be an engineer if...You have no life and can prove it mathematically.