ATO/NSW Refill Programming

[crs751]

I perform ATO and refill of my new salt water (NSW) tank directly from my RODI unit controlled by solenoids. My programming is as follows:

ATO

Fallback OFF
Set OFF
If SmpFil CLOSED Then ON
If SmpHI OPEN Then OFF
When On > 008:00 Then OFF
If T_Salt < 33.0 Then OFF

NSW Refill

Fallback OFF
If NSW_Lo CLOSED Then ON
If NSW_HI OPEN Then OFF
If Output ATO_4_4 = ON Then OFF

I added the last line of code under NSW Refill because when I am refilling the NSW reservoir my RODI can't do the ATO and that refill at the same time. I want to have the Apex temporarily close the solenoid to the NSW refill and open the ATO solenoid to replace the evaporated water in the display. When complete, the ATO solenoid closes and the NSW solenoid opens to continue refilling the NSW Refill. When I tested this today the ATO opened and completed its task but the NSW solenoid did reopen. What am I doing wrong? Thanks.

[RussM]

When I tested this today the ATO opened and completed its task but the NSW solenoid did reopen. What am I doing wrong? Thanks.

Did you mean to write that the NSW solenoid did *not* reopen?

If so, that would be expected. If the NSW refill process started and ran long enough for the low sensor to be OPEN, and then was interrupted by the ATO refill running, the NSW refill will not restart until the low sensor is once again CLOSED.

[crs751]

Yes you are correct. The low sensor is OPEN so I understand how the process was interrupted. Is there programming that will interrupt the fill process when the ATO operates and then restart the NSW fill until the NSW_HI is OPEN?