Improve guarding

Author: bouwew

plugwise/helper.py

@@ -973,12 +973,13 @@ def _get_appliance_data(self, d_id: str) -> DeviceData:
         if "c_heating_state" in data:
             if self._elga or (
                 self.smile_name in ("Adam", "Smile Anna") and self._on_off_device
-            ):
-                if data["intended_boiler_temperature"] != 0:
-                    data["heating_state"] = data["c_heating_state"]
-                    # For Adam + OnOff cooling, central_heating_state = True means cooling is active
-                    # For Smile Anna, _cooling_active will be corrected in the next if-construc
-                    if self._cooling_present:
+            ):  
+                data["heating_state"] = data["c_heating_state"]
+                if "intended_boiler_temperature" in data and data["intended_boiler_temperature"] == 0:
+                    data["heating_state"] = False
+                # For Adam + OnOff cooling, central_heating_state = True means cooling is active
+                # For Smile Anna, _cooling_active will be corrected in the next if-construc
+                if self._cooling_present:
                         self._cooling_active = True
 
             # Finally, remove c_heating_state from the output