diff --git a/app/gui/oven_control/configwindow.cpp b/app/gui/oven_control/configwindow.cpp
index dee3efa..c05a912 100644
--- a/app/gui/oven_control/configwindow.cpp
+++ b/app/gui/oven_control/configwindow.cpp
@@ -445,6 +445,7 @@ void ConfigWindow::on_washButton_clicked()
 void ConfigWindow::on_helpButton_clicked()
 {
     ManualViewerDlg* dlg = new ManualViewerDlg(this);
-    dlg->exec();
+    dlg->showFullScreen();
+    dlg->raise();
 }
 
diff --git a/app/gui/oven_control/mainwindow.cpp b/app/gui/oven_control/mainwindow.cpp
index e27fc66..9e618ce 100644
--- a/app/gui/oven_control/mainwindow.cpp
+++ b/app/gui/oven_control/mainwindow.cpp
@@ -14,6 +14,7 @@
 #include "ovenstatics.h"
 #include "notipopupdlg.h"
 #include "multicookwindow.h"
+#include "manualviewerdlg.h"
 
 MainWindow *MainWindow::instance = NULL;
 
@@ -275,5 +276,7 @@ void MainWindow::on_configButton_clicked()
 
 void MainWindow::on_helpButton_clicked()
 {
-
+    ManualViewerDlg* dlg = new ManualViewerDlg(this);
+    dlg->showFullScreen();
+    dlg->raise();
 }
diff --git a/app/gui/oven_control/operationtimeheat.cpp b/app/gui/oven_control/operationtimeheat.cpp
index ea8a498..25de9c8 100644
--- a/app/gui/oven_control/operationtimeheat.cpp
+++ b/app/gui/oven_control/operationtimeheat.cpp
@@ -3,6 +3,7 @@
 #include "ui_operationtimeheat.h"
 #include "ovenstatics.h"
 #include "soundplayer.h"
+#include "manualviewerdlg.h"
 
 OperationTimeHeat::OperationTimeHeat(QWidget *parent) :
     QMainWindow(parent),
@@ -105,3 +106,10 @@ void OperationTimeHeat::keyReleaseEvent(QKeyEvent *event)
         break;
     }
 }
+
+void OperationTimeHeat::on_helpButton_clicked()
+{
+    ManualViewerDlg* dlg = new ManualViewerDlg(this);
+    dlg->showFullScreen();
+    dlg->raise();
+}
diff --git a/app/gui/oven_control/operationtimeheat.h b/app/gui/oven_control/operationtimeheat.h
index 086e819..bd5df58 100644
--- a/app/gui/oven_control/operationtimeheat.h
+++ b/app/gui/oven_control/operationtimeheat.h
@@ -26,6 +26,8 @@ private slots:
 
     void on_backButton_clicked();
 
+    void on_helpButton_clicked();
+
 private:
     Ui::OperationTimeHeat *ui;
     void reloadUI(void);
diff --git a/app/gui/oven_control/operationtimemode.cpp b/app/gui/oven_control/operationtimemode.cpp
index f52205b..7e96c60 100644
--- a/app/gui/oven_control/operationtimemode.cpp
+++ b/app/gui/oven_control/operationtimemode.cpp
@@ -3,6 +3,7 @@
 #include "ui_operationtimemode.h"
 #include "ovenstatics.h"
 #include "soundplayer.h"
+#include "manualviewerdlg.h"
 
 OperationTimeMode::OperationTimeMode(QWidget *parent) :
     QMainWindow(parent),
@@ -133,3 +134,10 @@ void OperationTimeMode::keyReleaseEvent(QKeyEvent *event)
         break;
     }
 }
+
+void OperationTimeMode::on_helpButton_clicked()
+{
+    ManualViewerDlg* dlg = new ManualViewerDlg(this);
+    dlg->showFullScreen();
+    dlg->raise();
+}
diff --git a/app/gui/oven_control/operationtimemode.h b/app/gui/oven_control/operationtimemode.h
index 9d7fffd..48383c1 100644
--- a/app/gui/oven_control/operationtimemode.h
+++ b/app/gui/oven_control/operationtimemode.h
@@ -22,6 +22,8 @@ protected:
 private slots:
     void on_backButton_clicked();
 
+    void on_helpButton_clicked();
+
 private:
     Ui::OperationTimeMode *ui;
     void reloadUi(void);
diff --git a/app/gui/oven_control/operationtimeparts.cpp b/app/gui/oven_control/operationtimeparts.cpp
index 35f0f90..b36f690 100644
--- a/app/gui/oven_control/operationtimeparts.cpp
+++ b/app/gui/oven_control/operationtimeparts.cpp
@@ -4,6 +4,7 @@
 #include "ui_operationtimeparts.h"
 #include "ovenstatics.h"
 #include "soundplayer.h"
+#include "manualviewerdlg.h"
 
 OperationTimeParts::OperationTimeParts(QWidget *parent) :
     QMainWindow(parent),
@@ -144,3 +145,10 @@ void OperationTimeParts::keyReleaseEvent(QKeyEvent *event)
         break;
     }
 }
+
+void OperationTimeParts::on_helpButton_clicked()
+{
+    ManualViewerDlg* dlg = new ManualViewerDlg(this);
+    dlg->showFullScreen();
+    dlg->raise();
+}
diff --git a/app/gui/oven_control/operationtimeparts.h b/app/gui/oven_control/operationtimeparts.h
index 630087a..71519f5 100644
--- a/app/gui/oven_control/operationtimeparts.h
+++ b/app/gui/oven_control/operationtimeparts.h
@@ -27,6 +27,8 @@ private slots:
 
     void onBtnResetsClicked(int);
 
+    void on_helpButton_clicked();
+
 protected:
     void keyPressEvent(QKeyEvent *event);
     void keyReleaseEvent(QKeyEvent *event);
diff --git a/app/gui/oven_control/realtimepartswindow.cpp b/app/gui/oven_control/realtimepartswindow.cpp
index 1a5a3ab..0796232 100644
--- a/app/gui/oven_control/realtimepartswindow.cpp
+++ b/app/gui/oven_control/realtimepartswindow.cpp
@@ -3,6 +3,7 @@
 #include "ui_realtimepartswindow.h"
 #include "ovenstatics.h"
 #include "soundplayer.h"
+#include "manualviewerdlg.h"
 
 RealtimePartsWindow::RealtimePartsWindow(QWidget *parent) :
     QMainWindow(parent),
@@ -159,3 +160,10 @@ void RealtimePartsWindow::keyReleaseEvent(QKeyEvent *event)
         break;
     }
 }
+
+void RealtimePartsWindow::on_helpButton_clicked()
+{
+    ManualViewerDlg *dlg = new ManualViewerDlg(this);
+    dlg->showFullScreen();
+    dlg->raise();
+}
diff --git a/app/gui/oven_control/realtimepartswindow.h b/app/gui/oven_control/realtimepartswindow.h
index a496d17..9746f46 100644
--- a/app/gui/oven_control/realtimepartswindow.h
+++ b/app/gui/oven_control/realtimepartswindow.h
@@ -28,6 +28,8 @@ private slots:
     void on_backButton_clicked();
     void oneSecTimerFired(void);
 
+    void on_helpButton_clicked();
+
 private:
     Ui::RealtimePartsWindow *ui;
     QLabel *m_arrLbState[CONTROL_LIST_COL_MAX][CONTROL_LIST_ITEM_MAX];
diff --git a/app/gui/oven_control/realtimesensorwindow.cpp b/app/gui/oven_control/realtimesensorwindow.cpp
index bed32b3..b2eee70 100644
--- a/app/gui/oven_control/realtimesensorwindow.cpp
+++ b/app/gui/oven_control/realtimesensorwindow.cpp
@@ -5,6 +5,7 @@
 #include "stringer.h"
 #include "QDateTime"
 #include "soundplayer.h"
+#include "manualviewerdlg.h"
 
 RealtimeSensorWindow::RealtimeSensorWindow(QWidget *parent) :
     QMainWindow(parent),
@@ -186,3 +187,10 @@ void RealtimeSensorWindow::on_resetButton_clicked()
     ovs->resetSensorHistory();
     reloadUi();
 }
+
+void RealtimeSensorWindow::on_helpButton_clicked()
+{
+    ManualViewerDlg* dlg = new ManualViewerDlg(this);
+    dlg->showFullScreen();
+    dlg->raise();
+}
diff --git a/app/gui/oven_control/realtimesensorwindow.h b/app/gui/oven_control/realtimesensorwindow.h
index 61939bf..ac19187 100644
--- a/app/gui/oven_control/realtimesensorwindow.h
+++ b/app/gui/oven_control/realtimesensorwindow.h
@@ -30,6 +30,8 @@ private slots:
 
     void on_resetButton_clicked();
 
+    void on_helpButton_clicked();
+
 private:
     const uint16_t m_arrSensorItemIdxs[REALSENSOR_CONTROL_LIST_ITEM_MAX]={
         0,1,3,4,5,6,7,8,12,13