Index: sources/canbus/MessageGlobals.h
===================================================================
diff -u -r4f14c2ecfcd0c6b0c526f266c584f566b0b53eb5 -r988d4037838bb83205e1b98e1323846271e58571
--- sources/canbus/MessageGlobals.h	(.../MessageGlobals.h)	(revision 4f14c2ecfcd0c6b0c526f266c584f566b0b53eb5)
+++ sources/canbus/MessageGlobals.h	(.../MessageGlobals.h)	(revision 988d4037838bb83205e1b98e1323846271e58571)
@@ -258,7 +258,7 @@
     // ---- RO Water
     {Gui::GuiActionType::ID_DuetRoWaterStatDGq                      ,   0 * 4       }, // 0 parameter  each 4bytes
     {Gui::GuiActionType::ID_DuetRoWaterModeUIi                      ,   1 * 4       }, // 1 parameter  each 4bytes
-    {Gui::GuiActionType::ID_DuetRoWaterModeDGr                      ,   2 * 4       }, // 2 parameters each 4bytes
+    {Gui::GuiActionType::ID_DuetRoWaterModeDGr                      ,   3 * 4       }, // 3 parameters each 4bytes
     // ----
     {Gui::GuiActionType::ID_CANBusFaultCount                        ,   1           },
     {Gui::GuiActionType::ID_RawData                                 , 255           },
Index: sources/model/dg/adjustment/settings/MDuetRoWaterDG.cpp
===================================================================
diff -u -r2ef03b2ce51b4dc507f66e9671953a8e0824bde9 -r988d4037838bb83205e1b98e1323846271e58571
--- sources/model/dg/adjustment/settings/MDuetRoWaterDG.cpp	(.../MDuetRoWaterDG.cpp)	(revision 2ef03b2ce51b4dc507f66e9671953a8e0824bde9)
+++ sources/model/dg/adjustment/settings/MDuetRoWaterDG.cpp	(.../MDuetRoWaterDG.cpp)	(revision 988d4037838bb83205e1b98e1323846271e58571)
@@ -37,18 +37,21 @@
 
 QVariantList Model::MDuetRoWaterModeDGr::parameters() const {
     return {
-        _data.mAccepted.value,
-        _data.mReason  .value,
+        _data.mFirmwareValue.value,
+        _data.mAccepted     .value,
+        _data.mReason       .value,
     };
 }
 
 bool Model::MDuetRoWaterModeDGr::fromByteArray(const QByteArray &vByteArray, int *vIndex) {
     int index = 0; // message data start position
-    if (GetValue(vByteArray, index, _data.mAccepted ))
-    if (GetValue(vByteArray, index, _data.mReason   ))
+    if (GetValue(vByteArray, index, _data.mFirmwareValue ))
+    if (GetValue(vByteArray, index, _data.mAccepted      ))
+    if (GetValue(vByteArray, index, _data.mReason        ))
          return true ;
     else { if(vIndex) *vIndex = index; return false; }
     else { if(vIndex) *vIndex = index; return false; }
+    else { if(vIndex) *vIndex = index; return false; }
 }
 
 /*!
@@ -58,7 +61,8 @@
  */
 DuetRoWaterModeDGrData Model::MDuetRoWaterModeDGr::data() const {
     Data data;
-    data.mAccepted  = _data.mAccepted.value;
-    data.mReason    = _data.mReason  .value;
+    data.mFirmwareValue = _data.mFirmwareValue.value;
+    data.mAccepted      = _data.mAccepted     .value;
+    data.mReason        = _data.mReason       .value;
     return data;
 }
Index: sources/model/dg/adjustment/settings/MDuetRoWaterDG.h
===================================================================
diff -u -r2ef03b2ce51b4dc507f66e9671953a8e0824bde9 -r988d4037838bb83205e1b98e1323846271e58571
--- sources/model/dg/adjustment/settings/MDuetRoWaterDG.h	(.../MDuetRoWaterDG.h)	(revision 2ef03b2ce51b4dc507f66e9671953a8e0824bde9)
+++ sources/model/dg/adjustment/settings/MDuetRoWaterDG.h	(.../MDuetRoWaterDG.h)	(revision 988d4037838bb83205e1b98e1323846271e58571)
@@ -82,8 +82,9 @@
  *
  * | Payload  ||
  * |          ||
- * | #1:(U32) | \ref Data::mAccepted |
- * | #2:(U32) | \ref Data::mReason   |
+ * | #1:(U32) | \ref Data::mFWValue  |
+ * | #2:(U32) | \ref Data::mAccepted |
+ * | #3:(U32) | \ref Data::mReason   |
  *
  * \sa Data
  *
@@ -103,8 +104,9 @@
     QVariantList parameters() const override;
 
     struct {
-        Types::U32 mAccepted;
-        Types::U32 mReason  ;
+        Types::U32 mFirmwareValue;
+        Types::U32 mAccepted     ;
+        Types::U32 mReason       ;
     } _data;
 
 public:
@@ -113,8 +115,9 @@
     QString      infoText   () const override { return QString("AdjustRoWater") ; }
 
     struct Data {
-        bool       mAccepted = 0;  /*!< Accepted        value of type quint32 extracted out */
-        quint32    mReason   = 0;  /*!< Reason          value of type quint32 extracted out */
+        quint32    mFirmwareValue = 0;  /*!< Value in the firmware */
+        bool       mAccepted      = 0;  /*!< Accepted        value of type quint32 extracted out */
+        quint32    mReason        = 0;  /*!< Reason          value of type quint32 extracted out */
     };
 
     MDuetRoWaterModeDGr () { }
Index: sources/view/VAdjustmentResponseBase.h
===================================================================
diff -u -r2ef03b2ce51b4dc507f66e9671953a8e0824bde9 -r988d4037838bb83205e1b98e1323846271e58571
--- sources/view/VAdjustmentResponseBase.h	(.../VAdjustmentResponseBase.h)	(revision 2ef03b2ce51b4dc507f66e9671953a8e0824bde9)
+++ sources/view/VAdjustmentResponseBase.h	(.../VAdjustmentResponseBase.h)	(revision 988d4037838bb83205e1b98e1323846271e58571)
@@ -57,6 +57,7 @@
     // disabled coco end
 
     PROPERTY( bool      , adjustment_Accepted        , 0)
+    PROPERTY( quint32   , adjustment_FWValue         , 0)
 
     Q_PROPERTY(QString adjustment_ReasonText READ text NOTIFY adjustment_ReasonTriggered)
 
Index: sources/view/settings/VDuetRoWaterDG.cpp
===================================================================
diff -u -r2ef03b2ce51b4dc507f66e9671953a8e0824bde9 -r988d4037838bb83205e1b98e1323846271e58571
--- sources/view/settings/VDuetRoWaterDG.cpp	(.../VDuetRoWaterDG.cpp)	(revision 2ef03b2ce51b4dc507f66e9671953a8e0824bde9)
+++ sources/view/settings/VDuetRoWaterDG.cpp	(.../VDuetRoWaterDG.cpp)	(revision 988d4037838bb83205e1b98e1323846271e58571)
@@ -44,6 +44,7 @@
 
 void View::VDuetRoWaterDG::onActionReceive(const DuetRoWaterModeDGrData &vData) // 0xC400 : 196
 {
+    adjustment_FWValue          ( vData.mFirmwareValue );
     adjustment_Accepted         ( vData.mAccepted      );
     adjustment_Reason           ( vData.mReason        );
 
@@ -52,13 +53,11 @@
         notification("");
     }
     else {
+        // If the firmware rejected the set RO only mode, set the value that firmware has it.
+        status( vData.mFirmwareValue );
         if ( _post ) {
-            status(     ! _status );    // on post what UI currently has, is rejected, so UI should change to opposite.
             _post = false;
         }
-        else {
-            status(       _status );    // use the old value to emit signal for UI
-        }
         notification(tr("The RO Water Mode change request has been rejected [%1]").arg(vData.mReason));
     }