Defer command

[blackx-runner]

I've had my ato programmed for a couple years using an OSC command and an upper level float switch. That has worked very well for my needs. I've noticed recently that I'm getting waves in the return area that will cause the pump to flip on and off when it nears the fill level. I tried to just add a defer command to stop this, but it doesn't seem to work. Can anyone point me in the right direction, or advise on a better way to program.
Here is my current code.

Fallback OFF
Set OFF
OSC 000:00/010:00/050:00 Then ON
If Sw1 OPEN Then OFF
Defer 001:00 Then ON

 

[Reefing Madness]