Vtherm not reacting quickly to set-temperature reduction #906
Replies: 10 comments 3 replies
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PS I saw similar behaviour on a graph that snauwaertc posted, his seemed to continue heating for 20-30 minutes after the temperature reduction too - |
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Hello @doubledrat , Please give me your VTherm attributes (Dev Tools/State). I guess you have a very long cycle not ? |
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5 minutes
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Avec tout le respect, je ne pense pas être confronté à ce bug. a) Je fais tourner mon hack de manière à éviter le bug (mais j’admets que le "correctif" pourrait ne pas fonctionner). Ce qui est incorrect, c’est que le vtherm n’a pas réagi à la baisse de la température de consigne en temps voulu. With respect, I don't think I am hitting this bug a) I'm running my hack so that the bug should be avoided (but accept that the "fix" might not be working) what is incorrect is that the vtherm didn't respond to the reduction in set-temperature in a timely fashion The log shows Le journal montre
Puis à 21h25 (quand je l'ai passé en mode ECO) - Mais ce n'est qu'à 21h38 qu'il ferme la vanne.
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PS : Je pense que le bug est que la vanne signale incorrectement "idle" alors qu'elle chauffe ? Je ne me souviens pas l'avoir vue signaler "chauffage" lorsqu'elle est au repos. PS I believe the bug is that the valve incorrectly reports idle when it is heating? I don't recall having seen it report heating when it is idle |
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PPS : Sauf si je comprends mal le code, un vtherm de type over-valve/climate ne se base pas sur PPS unless I'm misunderstanding the code, an over-valve/climate vtherm doesn't use the hvac_action to determine if it is active, but checks if the valve_opening_degree is more than 0?
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To your main point, I have no idea. I wish I will be able to see that directly now I have a TRV. |
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I see something wrong in your configuration (which is not linked to the issue): You should set 5 in this field. |
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Ah. OK. I believe that is the default. I don't remember changing it
…On Wed, 12 Feb 2025, 23:00 Jean-Marc Collin, ***@***.***> wrote:
I see something wrong in your configuration (which is not linked to the
issue): auto_regulation_dpercent: 0.5. With valve you should give a
percentage. And I read in discussion that values < 3 can lead to a
decalibration issue (not sure it is English).
You should set 5 in this field.
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Yes, I mean the value is the default and there's no indication that the
value is not appropriate.
It would be better if the default was 5 if it is a percent - less cries for
help that way! Or at least put that in the text below.
…On Thu, 13 Feb 2025, 20:55 Jean-Marc Collin, ***@***.***> wrote:
Yes it is the defaut for temperature regulation and not valve regulation
which should be in %. It is in the text below the field.
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This is just one example of a phenomena that I have experienced multiple times on multiple vtherms
Ceci est juste un exemple d'un phénomène que j'ai vécu plusieurs fois sur plusieurs vtherms.
At 21:25 temperature was reduced from 20 to 16. It wasn't until 21:42 (17 minutes later) that the valve was closed by VT and it wasn't until 21:44 (19 minutes later) that the vtherm stopped calling for heat. This kept my boiler running for nearly 20 minutes after it was needed (this was the last active vtherm).
À 21:25, la température a été réduite de 20 à 16. Ce n'est qu'à 21:42 (17 minutes plus tard) que la vanne a été fermée par VT, et ce n'est qu'à 21:44 (19 minutes plus tard) que le vtherm a cessé de demander de la chaleur. Cela a maintenu ma chaudière en fonctionnement pendant près de 20 minutes après que ce n'était plus nécessaire (c'était le dernier vtherm actif).
The day before and the day after, this same vtherm did what I would expect it to do (it reacted within 3 minutes) -
Le jour précédent et le jour suivant, ce même vtherm a réagi comme je m'y attendais (il a réagi en moins de 3 minutes).
this is the debug log from the day it misbehaved. Any idea what went wrong? -
Voici le journal de débogage du jour où il s'est mal comporté. Une idée de ce qui a mal tourné ?
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