diff --git a/lib/devices/air-purifier-3.js b/lib/devices/air-purifier-3.js
index 964fd36..db3df10 100644
--- a/lib/devices/air-purifier-3.js
+++ b/lib/devices/air-purifier-3.js
@@ -184,7 +184,7 @@ module.exports = class extends AirPurifier.with(
 			}
 		);
 		
-		// Favorite Level
+		// Favorite Fan Level
 		this.defineProperty(
 			{ did: `${id}`, siid: 10, piid: 10 },
 			{
@@ -275,12 +275,12 @@ module.exports = class extends AirPurifier.with(
 		const { id } = this.handle.api;
 		let value = parseInt(speed);
 
-		if (value < 390) {
-			value = 390;
+		if (value < 300) {
+			value = 300;
 		}
 
-		if (value > 2150) {
-			value = 2150;
+		if (value > 2300) {
+			value = 2300
 		}
 
 		return this.call('set_properties', [
@@ -330,7 +330,7 @@ module.exports = class extends AirPurifier.with(
 		]).then(() => null);
 	}
 	
-	changeFavorite(level) {
+	changeFavoriteLevel(level) {
 		const { id } = this.handle.api;
 		let value = parseInt(level);