Program problems

[Carlos]

I am having a real problem with my chiller and heater.

They either do not come on or when they do, they do not turn off when they are supposed to.

If my chiller kicks on, then it brings down the temp down but does not turn off when it is supposed to. The heater usually never comes on.

Can someone check the program and let me know if I am doing something wrong??

If Time > 01:00 Then ALM OFF
If Sun 015/000 Then LT1 ON
If Sun 000/-015 Then LT2 ON
If Sun -015/015 Then VHO ON
If Sun 000/000 Then MO1 OFF
If Sun 000/000 Then MO2 OFF
OSC 070/015 ON/OFF Then PM1 ON
OSC 090/025 ON/OFF Then PM2 ON
If Feed cycle Then PM1 OFF
If Feed cycle Then PM2 OFF
If Temp > RT+1.0 Then SMP ON
If Temp < RT+0.0 Then SMP OFF
If Temp > 85.0 Then LT1 OFF
If Temp > 85.0 Then LT2 OFF
If Temp > 86.0 Then ALM ON
If Temp < 75.0 Then ALM ON
If ORP < 340 Then OZN ON
If ORP > 350 Then OZN OFF
If ORP > 450 Then ALM ON
If ORP < 200 Then ALM ON
If pH > 7.90 Then CO2 ON
If pH < 7.85 Then CO2 OFF
If pH > 8.50 Then ALM ON
If pH < 7.50 Then ALM ON
If Temp > RT+1.0 Then COL ON
If Temp < RT+0.0 Then COL OFF
If Temp < RT+-0.5 Then HET ON
If Temp > RT+0.0 Then HET OFF
Max Change 015 M Then LT1 OFF
Max Change 015 M Then LT2 OFF
If Battery Low Then ALM ON

Thanks for your help.

Carlos

 

[hammerhead]

I dont use RT commands. For mine it like this


IF TEMP IS < 79.1 THEN HET ON
IF TEMP IS > 79.3 THEN HET OFF
IF TEMP IS > 79.9 THEN COL ON
IF TEMP IS < 79.4 THEN COL OFF
IF TEMP IS < 30 THEN HEAT OFF (I use this in case of a temp probe malfunction)


This works great for me.

 

[Carlos]

Yeah, I like to use the RT function cause it just makes it a bit more natural. I have a pretty good chiller that can keep the temp where it is supposed to so I really would love to take advantage of the feature.

Carlos

 

[kbecker]

Can you provide the temps you notice the chiller and heater going on and off? I am asking this trying to isolate the problem from the RT table's current temp for today: 76.1

 

[Carlos]

Turns out it was a matter of rearranging the order of commands.

Go figure!

Carlos