Water_heater supports on/off, fixed #298

    * custom_components/daikin_onecta/water_heater.py:

Author: jwillemsen

custom_components/daikin_onecta/water_heater.py

@@ -97,7 +97,7 @@ def domestic_hotwater_temperature(self):
         return dht
 
     def get_supported_features(self):
-        sf = WaterHeaterEntityFeature.OPERATION_MODE
+        sf = WaterHeaterEntityFeature.OPERATION_MODE | WaterHeaterEntityFeature.ON_OFF
         # Only when we have a fixed setpointMode we can control the target
         # temperature of the tank
         dht = self.domestic_hotwater_temperature