Turn off Tuya fans when the speed is set to 0% (#181972)

homeassistant/components/tuya/fan.py

@@ -121,6 +121,11 @@ class TuyaFanEntity(TuyaEntity, FanEntity):
     @override
     async def async_set_percentage(self, percentage: int) -> None:
         """Set the speed of the fan, as a percentage."""
+        # The speed wrappers have no off position, 0% has to hit the switch
+        if percentage == 0 and self._switch_wrapper is not None:
+            await self.async_turn_off()
+            return
+
         await self._async_send_wrapper_updates(self._speed_wrapper, percentage)
 
     @override

tests/components/tuya/test_fan.py

@@ -11,6 +11,7 @@ from homeassistant.components.fan import (
     DOMAIN as FAN_DOMAIN,
     SERVICE_OSCILLATE,
     SERVICE_SET_DIRECTION,
+    SERVICE_SET_PERCENTAGE,
     SERVICE_SET_PRESET_MODE,
     SERVICE_TURN_OFF,
     SERVICE_TURN_ON,
@@ -91,6 +92,27 @@ async def test_platform_setup_and_discovery(
             {"preset_mode": "sleep"},
             [{"code": "switch", "value": True}, {"code": "mode", "value": "sleep"}],
         ),
+        (
+            "fs_g0ewlb1vmwqljzji",
+            "fan.ceiling_fan_with_light",
+            SERVICE_SET_PERCENTAGE,
+            {"percentage": 50},
+            [{"code": "fan_speed", "value": "3"}],
+        ),
+        (
+            "fs_g0ewlb1vmwqljzji",
+            "fan.ceiling_fan_with_light",
+            SERVICE_SET_PERCENTAGE,
+            {"percentage": 0},
+            [{"code": "switch", "value": False}],
+        ),
+        (
+            "ks_j9fa8ahzac8uvlfl",
+            "fan.tower_fan_ca_407g_smart",
+            SERVICE_SET_PERCENTAGE,
+            {"percentage": 0},
+            [{"code": "switch", "value": False}],
+        ),
     ],
 )
 async def test_action(