Falmot, set minimum valve opening

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Maxd13
Beiträge: 3
Registriert: 31.12.2025, 10:38
System: CCU
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Falmot, set minimum valve opening

Beitrag von Maxd13 » 31.12.2025, 11:27

Hello,

Sorry in advance if this has been answered already.

I have a 3 floor house. With 3 false floor heating circuit per floor.
I managed them with 2x Falmot c8, and 9 valves (1 falmot: 3x valves, 1 falmot: 6x valves). I have a 3x sth thermostat on each floors .

I have created 3 groups ( 3 valves+ 1x sth) in OpenCCU.

My question: I would like to keep 1 valve open to each floors/group to something like 10% . Is there a way to set this up in OpenCCU, or else where?

Thanks in advance for your help
Max

Xel66
Beiträge: 16521
Registriert: 08.05.2013, 23:33
System: Alternative CCU (auf Basis OCCU)
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Re: Falmot, set minimum valve opening

Beitrag von Xel66 » 31.12.2025, 14:48

No, there's no way to do that. You can only set a temporary value. The FALMOT's internal routine will close the valve again after a 3-minute period of time. The FALMOT is a regulator.

Gruß Xel66
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RaspberryMatic Version: 3.75.7.20240420 (rpi3) + Testsystem: CCU2 2.61.7
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Maxd13
Beiträge: 3
Registriert: 31.12.2025, 10:38
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Re: Falmot, set minimum valve opening

Beitrag von Maxd13 » 31.12.2025, 16:54

Okay,

Thanks for your quick answer. I have an automation in Home assistant that is setting target temperature to the STH, and with a min closing percentage on some valves, but I haven't been able to understand why sometimes it works fine (1st and 2nd floor), and sometimes the Falmot is forcing his order over the HA order... In the attachment suddenly the valves in ground floor got this behaviour...

To my understanding on reading on this forum, it's fine to play with STH target temp in HA, but I should not try to control the FALMOT in HA , right?
Dateianhänge
Screenshot_20251230-100024.png

Xel66
Beiträge: 16521
Registriert: 08.05.2013, 23:33
System: Alternative CCU (auf Basis OCCU)
Wohnort: Nordwürttemberg
Hat sich bedankt: 755 Mal
Danksagung erhalten: 1910 Mal

Re: Falmot, set minimum valve opening

Beitrag von Xel66 » 31.12.2025, 17:03

Maxd13 hat geschrieben:
31.12.2025, 16:54
...it's fine to play with STH target temp in HA,
Yes, that is the recommended way.
Maxd13 hat geschrieben:
31.12.2025, 16:54
but I should not try to control the FALMOT in HA , right?
Right. It's not possible to control the FALMOT directly dueto the affections to the duty cycle.

Gruß Xel66
-------------------------------------------------------------------------------------------
617 Kanäle in 166 Geräten und 242 CUxD-Kanäle in 45 CUxD-Geräten:
366 Programme, 357 Systemvariablen und 209 Direktverknüpfungen,
RaspberryMatic Version: 3.75.7.20240420 (rpi3) + Testsystem: CCU2 2.61.7
-------------------------------------------------------------------------------------------
Einsteigerthread, Programmlogik-Thread, WebUI-Handbuch, Logging von Programmläufen

Maxd13
Beiträge: 3
Registriert: 31.12.2025, 10:38
System: CCU
Hat sich bedankt: 1 Mal

Re: Falmot, set minimum valve opening

Beitrag von Maxd13 » 31.12.2025, 17:21

Hello,

Okay so I understood it right.

Sorry but I'm a bit into a loop at the moment...😅

In my scenario, I don't really understand the benefits to run OpenCCU, in terms of features, Vs hmIP cloud. ( Outside the obviously running locally vs in the cloud).

Max.

Xel66
Beiträge: 16521
Registriert: 08.05.2013, 23:33
System: Alternative CCU (auf Basis OCCU)
Wohnort: Nordwürttemberg
Hat sich bedankt: 755 Mal
Danksagung erhalten: 1910 Mal

Re: Falmot, set minimum valve opening

Beitrag von Xel66 » 01.01.2026, 02:27

Maxd13 hat geschrieben:
31.12.2025, 17:21
... in terms of features, Vs hmIP cloud.
That's the point. OpenCCU is more powerfull and has more options than the cloud devices. You can use virtual cannels
and expert parameters for advanced features. And much more.

Gruß Xel66
-------------------------------------------------------------------------------------------
617 Kanäle in 166 Geräten und 242 CUxD-Kanäle in 45 CUxD-Geräten:
366 Programme, 357 Systemvariablen und 209 Direktverknüpfungen,
RaspberryMatic Version: 3.75.7.20240420 (rpi3) + Testsystem: CCU2 2.61.7
-------------------------------------------------------------------------------------------
Einsteigerthread, Programmlogik-Thread, WebUI-Handbuch, Logging von Programmläufen

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