Index: sources/ApplicationController.cpp
===================================================================
diff -u -rf1c4d7f7c9cd4422f6190a5b31c8f1e74e520c04 -r4fd6a7d7801d91ffbce9e8d4b54900224f6a0fac
--- sources/ApplicationController.cpp	(.../ApplicationController.cpp)	(revision f1c4d7f7c9cd4422f6190a5b31c8f1e74e520c04)
+++ sources/ApplicationController.cpp	(.../ApplicationController.cpp)	(revision 4fd6a7d7801d91ffbce9e8d4b54900224f6a0fac)
@@ -89,7 +89,6 @@
  */
 void ApplicationController::initConnections()
 {
-
     connect(&_post  , SIGNAL(   didEthernet (bool)),
             this    ,   SLOT(onPOSTEthernet (bool)));
     connect(&_post  , SIGNAL(   didWiFi     (bool)),
@@ -112,6 +111,8 @@
             this            ,   SLOT( onActionTransmit(GuiActionType, const QVariantList &)));
     connect(&_GuiController , SIGNAL(didQuitApplication()),
             this            ,   SLOT( onQuitApplication()));
+    connect(&_GuiController , SIGNAL(didTreatmentRangesIncorrect()),
+            this            ,   SLOT(onTreatmentRangesIncorrect()));
 
     // From HD/DG
     connect(&_MessageDispatcher, SIGNAL(didActionReceive(GuiActionType, const QVariantList &)),
@@ -159,7 +160,6 @@
     connect(&_settingsWatcher, SIGNAL(finished        ()),
             this             ,   SLOT(onSettingsUpdate()));
 
-
     // Device Signal/Slots
     DEVICE_APP_INIT_CONNECTIONS_LIST
 
Index: sources/gui/GuiController.cpp
===================================================================
diff -u -r80b5e8f1ebb90c03c37d90d90cd2da3bd95d6803 -r4fd6a7d7801d91ffbce9e8d4b54900224f6a0fac
--- sources/gui/GuiController.cpp	(.../GuiController.cpp)	(revision 80b5e8f1ebb90c03c37d90d90cd2da3bd95d6803)
+++ sources/gui/GuiController.cpp	(.../GuiController.cpp)	(revision 4fd6a7d7801d91ffbce9e8d4b54900224f6a0fac)
@@ -390,3 +390,12 @@
 {
     emit didQuitApplication();
 }
+
+/*!
+ * \brief   GuiController::doNotifyTreatmentRangeInvalid
+ * \details emit the didTreatmentRangesIncorrect signal to ask ApplicationController to emit alarm that settings are bad
+ */
+void GuiController::doNotifyTreatmentRangeInvalid()
+{
+    emit didTreatmentRangesIncorrect();
+}
Index: sources/gui/GuiController.h
===================================================================
diff -u -r80b5e8f1ebb90c03c37d90d90cd2da3bd95d6803 -r4fd6a7d7801d91ffbce9e8d4b54900224f6a0fac
--- sources/gui/GuiController.h	(.../GuiController.h)	(revision 80b5e8f1ebb90c03c37d90d90cd2da3bd95d6803)
+++ sources/gui/GuiController.h	(.../GuiController.h)	(revision 4fd6a7d7801d91ffbce9e8d4b54900224f6a0fac)
@@ -75,6 +75,7 @@
     void  doExportService   (const GuiStringIndexMap &vExportList);             // UI => OS
     void  doExportTreatment (const GuiStringIndexMap &vExportList);             // UI => OS
     void  doQuitApplication ();
+    void  doNotifyTreatmentRangeInvalid();
 
 private slots: // Should be private for thread safety and is connected internally.
     void  onActionReceive (GuiActionType vAction, const QVariantList &vData); // UI <= HD/DG
@@ -116,6 +117,8 @@
 
     void didQuitApplication ();
 
+    void didTreatmentRangesIncorrect();
+
     // Device controller signal slots connection
     DEVICE_GUI_BRIDGE_DEFINITION_LIST
 
Index: sources/storage/Settings.cpp
===================================================================
diff -u -rf1c4d7f7c9cd4422f6190a5b31c8f1e74e520c04 -r4fd6a7d7801d91ffbce9e8d4b54900224f6a0fac
--- sources/storage/Settings.cpp	(.../Settings.cpp)	(revision f1c4d7f7c9cd4422f6190a5b31c8f1e74e520c04)
+++ sources/storage/Settings.cpp	(.../Settings.cpp)	(revision 4fd6a7d7801d91ffbce9e8d4b54900224f6a0fac)
@@ -87,18 +87,17 @@
         if (! isValid(settingFile.absoluteFilePath())) continue;
 
         QFile file(settingFile.absoluteFilePath());
-        if (file.open(QIODevice::ReadOnly | QIODevice::Text)) {
-            Detail detail;
-            detail.content    = file.readAll().trimmed();
-            if (detail.content.isEmpty()) continue;
-            detail.location   = settingFile.absolutePath() + "/";
-            detail.category   = QString(detail.location + settingFile.baseName()).remove(Storage::Settings_Path());
-            details += detail;
-        } else {
+        if (! file.open(QIODevice::ReadOnly | QIODevice::Text)) {
             err = Settings::Settings_Error::eError_ConfigFileReadFail;
             LOG_DEBUG(errorMessage(err).arg(Storage::Settings_Path()));
             return err;
         }
+        Detail detail;
+        detail.content    = file.readAll().trimmed();
+        if (detail.content.isEmpty()) continue;
+        detail.location   = settingFile.absolutePath() + "/";
+        detail.category   = QString(detail.location + settingFile.baseName()).remove(Storage::Settings_Path());
+        details += detail;
     }
 
     for (const auto &detail : details) {
Index: sources/view/hd/data/VTreatmentRanges.cpp
===================================================================
diff -u -rf1c4d7f7c9cd4422f6190a5b31c8f1e74e520c04 -r4fd6a7d7801d91ffbce9e8d4b54900224f6a0fac
--- sources/view/hd/data/VTreatmentRanges.cpp	(.../VTreatmentRanges.cpp)	(revision f1c4d7f7c9cd4422f6190a5b31c8f1e74e520c04)
+++ sources/view/hd/data/VTreatmentRanges.cpp	(.../VTreatmentRanges.cpp)	(revision 4fd6a7d7801d91ffbce9e8d4b54900224f6a0fac)
@@ -26,8 +26,13 @@
     ACTION_VIEW_CONNECTION(TreatmentRangesData);
     ACTION_VIEW_CONNECTION(SettingsData);
 
-    connect(this                    , SIGNAL(didTreatmentRangesIncorrect()),
-            &_ApplicationController ,   SLOT(onTreatmentRangesIncorrect()));
+    // since we do not have access to this object because it is created in QML.
+    // Connection to the GuiController made here
+    // It should be defined in the class which wants to connect to signal.
+    // VTreatmentRanges -> GUIController -> ApplicationController to handle
+    connect(this           , SIGNAL(  didTreatmentRangesIncorrect()),
+            &_GuiController,   SLOT(doNotifyTreatmentRangeInvalid()));
+
 }
 
 void View::VTreatmentRanges::onActionReceive(const TreatmentRangesData &vData)
@@ -52,7 +57,9 @@
 void View::VTreatmentRanges::onActionReceive(const SettingsData &)
 {
     QString mCategory = Storage::Settings_Category_ConfigurationsDataList;
+
     bool isConfigsOk = true; // assume configurations are valid
+
     FROMVARIANT_WITHRETURN              ( bloodFlowRateMin                  , "Blood Flow Rate Ranges"                  , "Blood_Flow_Rate_Min"                 , UInt  , isConfigsOk );
     FROMVARIANT_WITHRETURN              ( bloodFlowRateMax                  , "Blood Flow Rate Ranges"                  , "Blood_Flow_Rate_Max"                 , UInt  , isConfigsOk );
     FROMVARIANT_WITHRETURN              ( bloodFlowRateRes                  , "Blood Flow Rate Ranges"                  , "Blood_Flow_Rate_Res"                 , UInt  , isConfigsOk );
@@ -93,6 +100,11 @@
     bicarbonateConcentrateOptions       ( _Settings.keys(mCategory          , "Bicarbonate Concentrate Options"                                                        ));
     dialyzerTypeOptions                 ( _Settings.keys(mCategory          , "Dialyzer Type Options"                                                                  ));
 
+    isConfigsOk = isConfigsOk && !_heparinTypeOptions           .isEmpty();
+    isConfigsOk = isConfigsOk && !_acidConcentrateOptions       .isEmpty();
+    isConfigsOk = isConfigsOk && !_bicarbonateConcentrateOptions.isEmpty();
+    isConfigsOk = isConfigsOk && !_dialyzerTypeOptions          .isEmpty();
+
     FROMVARIANT_WITHRETURN              ( dialysateTempMin                  , "Dialysate Temperature"                   , "Dialysate_Temperature_Min"           , Float  , isConfigsOk );
     FROMVARIANT_WITHRETURN              ( dialysateTempMax                  , "Dialysate Temperature"                   , "Dialysate_Temperature_Max"           , Float  , isConfigsOk );
     FROMVARIANT_WITHRETURN              ( dialysateTempRes                  , "Dialysate Temperature"                   , "Dialysate_Temperature_Res"           , Float  , isConfigsOk );