I have a fault with a thermostat that keeps heating up too much. It heats up 3 °C too high but I don't understand why.
#better thermostat bug(?)
still marsh
still marsh
In general, I find that it constantly misses the target temperatures.
viscid trench
Hi @still marsh,
Better Thermostat is a custom Integrtion and therefore seperate from HA. You are free to ask here, but I would suggest a better place would be the official (looking) support for this software that the author has set-up in their GitHub repo here:
https://github.com/KartoffelToby/better_thermostat/discussions
You will find the community where most of the people reading your question will know what you are concwrned with.
still marsh
The problem is that there is no longer any support from the original developer. Because I have already looked at github.
The question is also whether I need it at all, because it can't be that difficult to keep a room in a certain state of repair.
viscid trench
Sorry to hear that. Usually at that point someone in the community takes over or the project dies and you find new software.
still marsh
Can't HA control this perfectly?
viscid trench
I don't understand the question.
still marsh
The aim is to maintain the temperature you have set in the room, right?
still marsh
So why is it so complicated?
viscid trench
There are numerout other Custom Integrations and Blueprints as well.
still marsh
do you know a good one?
viscid trench
Everyone wants it a bit different, temp control in a home is different things to different people and hardware is wildly varied.
still marsh
i only want two fixed temps day and night. nothing with when i come home or leave the room. My heating system is too slow for that
viscid trench
If you put this into a search engine it will search the community Forums and the Docs for things related to thermostat, or tweak the subject to refine your question. (I use the generic one in core)
site:home-assistant.io thermostat
still marsh
Which core do you mean?
viscid trench
Home Assistant Core Integrations.
https://www.home-assistant.io/integrations/generic_thermostat/
still marsh
unfortunately i can't use it because it needs a switching element(?) and i don't have a switch for it.
I will probably have to keep looking, thanks anyway
kindred bobcat
@still marsh - what are you trying to control?
still marsh
The TRV
kindred bobcat
The TRV should just import a climate entity anyway shouldn't it?
still marsh
What do you think?
i just want the room temaprature to be maintained, nothing more
now i've learned that my trv's have an interval of 15 minutes until they receive the next command. i'm a bit overwhelmed because it can't be that difficult to keep a temparature
kindred bobcat
Ok, so set the trv temperature and leave it alone
Better Thermostat does some calibration for internal thermometer offsets and is good for bundling multiple TRVs in one room, but doesn't really add anything in the "single radiator in one room" case
still marsh
i can't leave it alone because otherwise the whole room overheats
Why shouldn't it work with just one heating element?
kindred bobcat
If a TRV doesn't turn off when the temperature it is reading is higher than its setpoint, it's broken
BT works fine for a single element, it just doesn't work any better than generic thermostat
still marsh
not all of them can be defective. BT looks at the temperature of the room and tells the TRV which remp it should set. that's how I understood it
kindred bobcat
It depends how you set it up
With an external thermometer it applies an offset to the TRV thermometer which makes it read the same as the room temperature (e.g. room reads 17C, TRV reads 19C, TRV offset is set to -2C so behaves as if it is 17C) - it can do some slight fanciness to try and account for the room size (e.g. if your sensor is 100m away from the radiator - it might want to turn off "early" or the room will be like 50C at the radiator when the sensor hits 20C)
still marsh
why should the off set be at -2 C? in my case it is more than just 2 C
kindred bobcat
.... it was just an example
if the room reads 2C different to the TRV, it sets the TRV offset to 2C make it read the same as the room
still marsh
ok