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));
     }