BT / Sonoff TRVZB - Offset wrong

[DattiHD]

Hi,

maybe someone has an idea how to fix this issue:

Software I am using:
BT:
1.6.1

Z2MQTT:
1.41.0

Home Assisstant
Core
2024.11.1
Supervisor
2024.11.2
Operating System
13.2
Frontend
20241106.2

Hardware:
Sonoff TRVZB
Govee H5100

This happens for all my TRVs but let's take my living room TRV as an example.
This is it's configuration [edit: changing the calibration type to standard or aggressive does not affect the described behaviour]:

It is set to hit a temperature of 20 °C. I would expect that it would start to heat when the Govee Sensor reports a temperature that is below 19.8 °C.

However what actually happens is that the UI Card indicates heating when the ext. sensors temperature is < 20.0.

And the TRVZB is still idle because the last offset change was over an hour ago and the local temp is still > target temp.

Does anyone know how to decrease the interval of the offset correction? There are no indicators for any errors that would prevent BT from correcting the offset:

[alefello]

I'm having this behavior too :(

[vukitoso]

Toleranse: 0.2
20 - 0.2 = 19.8
20 + 0.2 = 20.2

Your 19.9 are just within the range of 19.8 < 19.9 < 20.2
hence the idle status.

[nightfever77]

This does not explain why BT card says heating although the TRV's running state is idle.

[vukitoso]

I have been testing TRVZB for 2 weeks now and I also often (every day) have situations when the thermostat does not close the valve.
For example, the target temperature is 22.5, Toleranse: 0.2, and the thermometer shows 22.9.
One of the two batteries continues to heat (the valve is open).
Apparently the algorithm is not perfect yet.

[folfy]

Can't diagnose regulation issues specific to a TRV without graphs and data, but for tolerance not working correctly: That's known, but will try to fix that soon as well #1314