Blocky output different after some change, but which change caused it?

[hill2button]

Hi all,

I have the following Event in my Domoticz:

Knipsel1.JPG (36.95 KiB) Viewed 517 times

This event is active.

Yesterday night the output was as follows:

Knipsel2.JPG (17.81 KiB) Viewed 517 times

Basically : IF CO2 is > 1000 --> start ventilation UNTIL CO2 < 775.

Yesterday I changed 3 things:
1) I added a new event, but this event is not set to active.
2) I set a "Off Delay" of 1200 seconds to the switch that starts the ventilation.
3) I removed 3 lines in the domoticz startup script that looked like this:
sudo sh -c 'echo 17 > /sys/class/gpio/export'
sudo sh -c 'echo high > /sys/class/gpio/gpio17/direction'
sudo sh -c 'echo 1 > /sys/class/gpio/gpio17/active_low'

Now, after these 3 changes, last night this is the output:

Knipsel3.JPG (25.49 KiB) Viewed 517 times

So now: it SEEMS that the ventilation starts at 1000 but it does not continue till 775, it stops when it drops below 1000. Or, also possible, it stops after 20 minutes? In any case, I'm lost. What's wrong?

[hill2button]

Problem was gone after I removed the Off Delay. It seems I misinterpreted "Off Delay". I thought this was a delay of the off command. So, I thought if you give a off command to a switch that it would delay this off action for 20 minutes, in fact turning the switch off at t+20min.

Apparently it's not like that, it seems it just means that when you turn it on, it will only remain on for 20 minutes.

I find that "Off Delay" as a name is confusing, but maybe that's just me