How to deal with trv's and hysteresis

[Rick-van-Dam]

My sonoff TRV's have hysteresis which means they don't open if theres a small deviation in temperature. This is adjustable from 1 degree down to 0.2 degrees. This helps reducing the amount of times the valve has to open or close, saving battery and reducing noise.

One problem I see now is that if my room cools down to 19.9, 19.8 degrees the boiler starts but my trv's do not open (hysteresis set to 0.2 degrees). This results in the boiler to keep working trying to heat that room until the temperature drops to 19.7 degrees.

Is there a way to make SAT aware of this hysteresis or would this be a new feature? I think ideally you would want the boiler to start working here when the temperature drops below 19.8 and not earlier.

[sergeantd83]

Move all the valves to the rooms section then. That means SAT will remain at idle until any of the valves ( climate entities ) will request for heat ( hvac_action: heating )

[Rick-van-Dam]

I seem unable to save this:

EDIT: this error also happens if I don't change anything.

EDIT: logs

2025-11-16 21:44:41.838 ERROR (MainThread) [aiohttp.server] Error handling request from 10.42.1.63
Traceback (most recent call last):
  File "/usr/local/lib/python3.13/site-packages/aiohttp/web_protocol.py", line 510, in _handle_request
    resp = await request_handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/aiohttp/web_app.py", line 569, in _handle
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/aiohttp/web_middlewares.py", line 117, in impl
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/homeassistant/components/http/security_filter.py", line 92, in security_filter_middleware
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/homeassistant/components/http/forwarded.py", line 214, in forwarded_middleware
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/homeassistant/components/http/request_context.py", line 26, in request_context_middleware
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/homeassistant/components/http/ban.py", line 86, in ban_middleware
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/homeassistant/components/http/auth.py", line 242, in auth_middleware
    return await handler(request)
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/homeassistant/components/http/headers.py", line 41, in headers_middleware
    response = await handler(request)
               ^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/homeassistant/helpers/http.py", line 73, in handle
    result = await handler(request, **request.match_info)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/homeassistant/components/http/decorators.py", line 83, in with_admin
    return await func(self, request, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/homeassistant/components/config/config_entries.py", line 234, in post
    return await super().post(request, flow_id)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/homeassistant/components/http/data_validator.py", line 74, in wrapper
    return await method(view, request, data, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/homeassistant/helpers/data_entry_flow.py", line 121, in post
    result = await self._flow_mgr.async_configure(flow_id, data)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/homeassistant/data_entry_flow.py", line 346, in async_configure
    result = await self._async_configure(flow_id, user_input)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/site-packages/homeassistant/data_entry_flow.py", line 393, in _async_configure
    result = await self._async_handle_step(
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        flow, cur_step["step_id"], user_input
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/usr/local/lib/python3.13/site-packages/homeassistant/data_entry_flow.py", line 493, in _async_handle_step
    result: _FlowResultT = await getattr(flow, method)(user_input)
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/config/custom_components/sat/config_flow.py", line 443, in async_step_overshoot_protection
    return await self.async_step_manufacturer()
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/config/custom_components/sat/config_flow.py", line 481, in async_step_manufacturer
    manufacturers = ManufacturerFactory.resolve_by_member_id(coordinator.member_id)
                                                             ^^^^^^^^^^^^^^^^^^^^^
  File "/config/custom_components/sat/esphome/__init__.py", line 176, in member_id
    return int(value)
ValueError: invalid literal for int() with base 10: '11.0'

EDIT: I managed to work around this by setting the value of sensor.opentherm_thermostat_device_id to 11 instead of 11.0 using dev tools and then it worked. This seems to be a bug in SAT since it only handles ints here:

SAT/custom_components/sat/manufacturer.py

Line 52 in 46ced16

def resolve_by_member_id(member_id: int) -> List[Manufacturer]:

[Rick-van-Dam]

I managed to move these radiators to the Rooms section, monitoring now. Will that interfere with calibration though?