ᐅ Timer for circulation pump at the heating system

Created on: 6 Apr 2021 09:11
C
chewbacca123
Hello everyone,
We have a timer switch for the heating circulation pump, see the picture.
But no matter how I set it, the circulation never works as it should. I just don’t understand it!
There are three modes you can set: permanently on, permanently off, or according to the schedule (middle setting).
I set it so that, for example, it should circulate tomorrow between around 6 and 9:00 AM. But it doesn’t. Of course, I also set the current time correctly according to the small arrow. I’ve tried everything.
What am I doing wrong?
Our heating system also has an option to control the circulation, see the other photo.
According to the heating installer, this won’t work if the manual timer is activated.

It really never works as I set it—for example, at 6:30 AM, freezing cold water for 1 minute.

FRUSTRATION!
Do you have any idea what this could be? Thanks a lot

Round timer dial with 24-hour number ring, two arrows, and Off/On marking


Display of a schedule: circulation 5+2, Monday-Friday, times 06:15-09:00 and 15:00-19:00.
chewbacca1236 Apr 2021 12:17
KingJulien schrieb:

What is it doing?
Circulating at the wrong time? Not circulating at all?

I’m trying to figure that out right now; I suspect it’s not circulating at all currently.
chewbacca1236 Apr 2021 12:18
FloHB123 schrieb:

Is it really correct that there is a completely standard analog timer switch at the pump, running in parallel with the heating system’s time control? In our case, the circulation pump is also time-controlled, but if I want to make changes, I only have to adjust the heating system—nothing on a timer switch.

According to the heating engineer, the information was: if the regular analog timer switch is running, the digital control in the heating system is ignored. If we turn off the analog timer, then whatever we set digitally on the heating system runs automatically. But somehow, I suspect that this is not quite right…
chewbacca1236 Apr 2021 12:19
berny schrieb:

You just need to pull out or push in a few of the black "teeth" around the outside, depending on the setting... then set the red selector switch to "clock."
Are you serious.. 😉 Of course we did that. At the times when it’s supposed to circulate, the plastic tabs are pushed in.
KingJulien6 Apr 2021 12:37
So, if it is set digitally, it still isn’t correct?
chewbacca1236 Apr 2021 12:50
KingJulien schrieb:

So even if it is set digitally, it still isn’t correct?
Unfortunately not :-(
berny6 Apr 2021 13:13
chewbacca123 schrieb:

Are you serious.. 😉 Of course, we did that. At the times when it’s supposed to circulate, the plastic tabs are pressed in.
Sorry, it was just an idea...