Allow turning Airzone slave zones on with any HVAC mode (#94721)

airzone: climate: allow turning slave zone on with any hvac mode

If the user selects a different mode on a slave zone from the one selected on
the master zone, it will raise an exception and it won't change the operation
mode or turn it on.
Change this behaviour so that the exception will still be raised but the slave
zone will be turned on and the hvac mode won't be changed.
This allows commanding airzone slave zones from limited APIs like homekit.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

homeassistant/components/airzone/climate.py

@@ -193,6 +193,8 @@ class AirzoneClimate(AirzoneZoneEntity, ClimateEntity):
 
     async def async_set_hvac_mode(self, hvac_mode: HVACMode) -> None:
         """Set hvac mode."""
+        slave_raise = False
+
         params = {}
         if hvac_mode == HVACMode.OFF:
             params[API_ON] = 0
@@ -202,12 +204,13 @@ class AirzoneClimate(AirzoneZoneEntity, ClimateEntity):
                 if self.get_airzone_value(AZD_MASTER):
                     params[API_MODE] = mode
                 else:
-                    raise HomeAssistantError(
-                        f"Mode can't be changed on slave zone {self.name}"
-                    )
+                    slave_raise = True
             params[API_ON] = 1
         await self._async_update_hvac_params(params)
 
+        if slave_raise:
+            raise HomeAssistantError(f"Mode can't be changed on slave zone {self.name}")
+
     async def async_set_temperature(self, **kwargs: Any) -> None:
         """Set new target temperature."""
         params = {}

tests/components/airzone/test_climate.py

@@ -438,7 +438,7 @@ async def test_airzone_climate_set_hvac_slave_error(hass: HomeAssistant) -> None
         )
 
     state = hass.states.get("climate.dorm_2")
-    assert state.state == HVACMode.OFF
+    assert state.state == HVACMode.HEAT
 
 
 async def test_airzone_climate_set_fan_mode(hass: HomeAssistant) -> None: