diff --git a/examples/OneOpenAir/OneOpenAir.ino b/examples/OneOpenAir/OneOpenAir.ino
index e471d1f..c5f09fc 100644
--- a/examples/OneOpenAir/OneOpenAir.ino
+++ b/examples/OneOpenAir/OneOpenAir.ino
@@ -467,9 +467,10 @@ static void ledBarEnabledUpdate(void) {
     if ((brightness == 0) || (configuration.getLedBarMode() == LedBarModeOff)) {
       ag->ledBar.setEnable(false);
     } else {
-      ag->ledBar.setBrighness(brightness);
+      ag->ledBar.setBrightness(brightness);
       ag->ledBar.setEnable(configuration.getLedBarMode() != LedBarModeOff);
     }
+     ag->ledBar.show();
   }
 }
 
@@ -812,10 +813,6 @@ static void configUpdateHandle() {
     return;
   }
 
-  if (ag->isOne()) {
-    ledBarEnabledUpdate();
-    stateMachine.executeLedBarTest();
-  }
   stateMachine.executeCo2Calibration();
 
   String mqttUri = configuration.getMqttBrokerUri();
@@ -851,15 +848,36 @@ static void configUpdateHandle() {
 
   if (ag->isOne()) {
     if (configuration.isLedBarBrightnessChanged()) {
-      ag->ledBar.setBrighness(configuration.getLedBarBrightness());
-      Serial.println("Set 'LedBarBrightness' brightness: " +
-                     String(configuration.getLedBarBrightness()));
+      if (configuration.getLedBarBrightness() == 0) {
+        ag->ledBar.setEnable(false);
+      } else {
+        if (configuration.getLedBarMode() != LedBarMode::LedBarModeOff) {
+          ag->ledBar.setEnable(true);
+        }
+        ag->ledBar.setBrightness(configuration.getLedBarBrightness());
+      }
+      ag->ledBar.show();
     }
+
+    if (configuration.isLedBarModeChanged()) {
+      if (configuration.getLedBarBrightness() == 0) {
+        ag->ledBar.setEnable(false);
+      } else {
+        if(configuration.getLedBarMode() == LedBarMode::LedBarModeOff) {
+          ag->ledBar.setEnable(false);
+        } else {
+          ag->ledBar.setEnable(true);
+          ag->ledBar.setBrightness(configuration.getLedBarBrightness());
+        }
+      }
+      ag->ledBar.show();
+    }
+
     if (configuration.isDisplayBrightnessChanged()) {
       oledDisplay.setBrightness(configuration.getDisplayBrightness());
-      Serial.println("Set 'DisplayBrightness' brightness: " +
-                     String(configuration.getDisplayBrightness()));
     }
+
+    stateMachine.executeLedBarTest();
   }
 
   fwNewVersion = configuration.newFirmwareVersion();
diff --git a/src/AgConfigure.cpp b/src/AgConfigure.cpp
index 2fc5536..0173edb 100644
--- a/src/AgConfigure.cpp
+++ b/src/AgConfigure.cpp
@@ -372,6 +372,7 @@ bool Configuration::parse(String data, bool isLocal) {
     }
   }
 
+  _ledBarModeChanged = false;
   if (JSON.typeof_(root[jprop_ledBarMode]) == "string") {
     String mode = root[jprop_ledBarMode];
     if (mode == getLedBarModeName(LedBarMode::LedBarModeCO2) ||
@@ -380,6 +381,7 @@ bool Configuration::parse(String data, bool isLocal) {
       String oldMode = jconfig[jprop_ledBarMode];
       if (mode != oldMode) {
         jconfig[jprop_ledBarMode] = mode;
+        _ledBarModeChanged = true;
         changed = true;
       }
     } else {
@@ -559,6 +561,7 @@ bool Configuration::parse(String data, bool isLocal) {
     }
   }
 
+  ledBarBrightnessChanged = false;
   if (JSON.typeof_(root[jprop_ledBarBrightness]) == "number") {
     int value = root[jprop_ledBarBrightness];
     int oldValue = jconfig[jprop_ledBarBrightness];
@@ -1147,6 +1150,12 @@ void Configuration::setOfflineModeWithoutSave(bool offline) {
   _offlineMode = offline;
 }
 
+bool Configuration::isLedBarModeChanged(void) { 
+  bool changed = _ledBarModeChanged;
+  _ledBarModeChanged = false;
+  return changed;
+}
+
 bool Configuration::isDisplayBrightnessChanged(void) {
   bool changed = displayBrightnessChanged;
   displayBrightnessChanged = false;
diff --git a/src/AgConfigure.h b/src/AgConfigure.h
index c3eda36..24473ec 100644
--- a/src/AgConfigure.h
+++ b/src/AgConfigure.h
@@ -18,6 +18,7 @@ private:
   bool displayBrightnessChanged = false;
   String otaNewFirmwareVersion;
   bool _offlineMode = false;
+  bool _ledBarModeChanged = false;
 
   AirGradient* ag;
 
@@ -80,6 +81,7 @@ public:
   bool isOfflineMode(void);
   void setOfflineMode(bool offline);
   void setOfflineModeWithoutSave(bool offline);
+  bool isLedBarModeChanged(void);
 };
 
 #endif /** _AG_CONFIG_H_ */
diff --git a/src/Main/LedBar.cpp b/src/Main/LedBar.cpp
index b00f36c..63aed35 100644
--- a/src/Main/LedBar.cpp
+++ b/src/Main/LedBar.cpp
@@ -64,7 +64,7 @@ void LedBar::setColor(uint8_t red, uint8_t green, uint8_t blue, int ledNum) {
  *
  * @param brightness Brightness (0 - 100)%
  */
-void LedBar::setBrighness(uint8_t brightness) {
+void LedBar::setBrightness(uint8_t brightness) {
   if (this->isBegin() == false) {
     return;
   }
diff --git a/src/Main/LedBar.h b/src/Main/LedBar.h
index 777ed24..576951a 100644
--- a/src/Main/LedBar.h
+++ b/src/Main/LedBar.h
@@ -19,7 +19,7 @@ public:
   void begin(void);
   void setColor(uint8_t red, uint8_t green, uint8_t blue, int ledNum);
   void setColor(uint8_t red, uint8_t green, uint8_t blue);
-  void setBrighness(uint8_t brightness);
+  void setBrightness(uint8_t brightness);
   int getNumberOfLeds(void);
   void show(void);
   void clear(void);