Help on Program

[Zarn]

So far here is what I have. Just have a couple of issure with the program.

1. I cant get the Fans to come on to cool the tank.
2. How do you get the powerheads , ATO to stay on constantly

Timer Names
LT1$-A1
HET$-A2
FAN$-A3
KOR$-A4
ATO$-A5
SKM$-A6
RET$-A7


Program
If Time > 13:00 Then LT1 ON
If Time > 23:00 Then LT1 OFF
If Temp > 78.5 Then HET ON
If Temp > 79.0 Then HET OFF
If Temp < 79.3 Then FAN ON
If Temp > 79.0 Then FAN OFF

[kenargo]

1. I cant get the Fans to come on to cool the tank.

This code should will turn the FAN ON then the temp < 79.3 and OFF when the temp > 79. It looks like you may have the temps reversed. If you want them to cool the tank you should have something like this:

If Time > 00:00 Then FAN OFF
If Temp > 79.0 Then FAN ON

The above initializes the FAN to OFF but when the temp > 79.0 the FAN will turn ON.

2. How do you get the powerheads , ATO to stay on constantly

Add this:

If Time > 00:00 Then ATO ON

One more suggestion; it appears the HET program is a bit off, you may want something like this:

If Temp < 78.5 Then HET ON
If Temp > 79.0 Then HET OFF

And add, just in case the temp probe fails:

If Temp < 73 Then HET OFF

[Zarn]

That solved the problem. Thanks