First unit test ok

custom_components/versatile_thermostat/base_thermostat.py

@@ -138,7 +138,8 @@ class BaseThermostat(ClimateEntity, RestoreEntity, Generic[T]):
                     "target_temperature_step",
                     "is_used_by_central_boiler",
                     "temperature_slope",
-                    "max_on_percent"
+                    "max_on_percent",
+                    "have_valve_regulation",
                 }
             )
         )
@@ -2673,6 +2674,7 @@ class BaseThermostat(ClimateEntity, RestoreEntity, Generic[T]):
             "temperature_slope": round(self.last_temperature_slope or 0, 3),
             "hvac_off_reason": self.hvac_off_reason,
             "max_on_percent": self._max_on_percent,
+            "have_valve_regulation": self.have_valve_regulation,
         }
 
         _LOGGER.debug(
@@ -2691,6 +2693,11 @@ class BaseThermostat(ClimateEntity, RestoreEntity, Generic[T]):
         )
         return super().async_write_ha_state()
 
+    @property
+    def have_valve_regulation(self) -> bool:
+        """True if the Thermostat is regulated by valve"""
+        return False
+
     @callback
     def async_registry_entry_updated(self):
         """update the entity if the config entry have been updated

custom_components/versatile_thermostat/thermostat_climate_valve.py

@@ -227,11 +227,12 @@ class ThermostatOverClimateValve(ThermostatOverClimate):
             return
 
         for under in self._underlyings:
-            await under.set_temperature(
-                self.target_temperature,
-                self._attr_max_temp,
-                self._attr_min_temp,
-            )
+            if self.target_temperature != under.last_sent_temperature:
+                await under.set_temperature(
+                    self.target_temperature,
+                    self._attr_max_temp,
+                    self._attr_min_temp,
+                )
 
         for under in self._underlyings_valve_regulation:
             await under.set_valve_open_percent()