Apex - Can I control a heater output via a cross alert setup?

[JCOLE]

I have heaters in my sump that turn off when I shut my pumps down so I do not overheat my acrylic sump. I have two return pumps. One pump controls the display tank and the other pump controls my manifold to my frag tank, uv, reactors, etc. See below for my programming. I have the heaters shut down when a pump is turned off. However, what I would like to do is have the heater outputs turn off only if BOTH pumps are turned off. Most of the time I will only shut down one pump at a time to feed, clean, etc so I would like the heaters to stay on to keep up temp if one pump is still on.

I know I can always turn the heaters to ON but I have 3 of them and I will more than likely forget to set them to ON or forget to set them back to auto.

Is this a possibility?

This is my current programming for one of my heaters.

Fallback OFF
If Tmp < 78.6 Then ON
If Tmp > 78.8 Then OFF
If Output RETPUMP_DT = OFF Then OFF
If Output RETPUMP_FUGE = OFF Then OFF

 

[SuncrestReef]

You can do an "AND" comparison if you create a virtual output to check the status of the pumps, then on the heater use the status of the virtual output to decide what to do. Example:

BothPumps (virtual output)
-----------------
Set OFF
If Output RETPUMP_DT = ON Then ON
If Output RETPUMP_FUGE = ON Then ON

Heater:
------------
Fallback OFF
If Tmp < 78.6 Then ON
If Tmp > 78.8 Then OFF
If Output BothPumps = OFF Then OFF

Place the new BothPumps output on your dashboard and set its slider to AUTO.

The "BothPumps" output will be ON if either one of your two pumps is on. So the heater will turn OFF if BothPumps is OFF.

 

[JCOLE]

You can do an "AND" comparison if you create a virtual output to check the status of the pumps, then on the heater use the status of the virtual output to decide what to do. Example:

BothPumps (virtual output)
-----------------
Set OFF
If Output RETPUMP_DT = ON Then ON
If Output RETPUMP_FUGE = ON Then ON

Heater:
------------
Fallback OFF
If Tmp < 78.6 Then ON
If Tmp > 78.8 Then OFF
If Output BothPumps = OFF Then OFF

Place the new BothPumps output on your dashboard and set its slider to AUTO.

The "BothPumps" output will be ON if either one of your two pumps is on. So the heater will turn OFF if BothPumps is OFF.

That did the trick! Thank you for the help!!!