Index: sources/gui/qml/pages/pretreatment/create/PreTreatmentCreateTreatmentSettings.qml
===================================================================
diff -u -r1132f049e169cc87a059261f72fca0ceb7d739f1 -r1a46e7e1fd9da0fcfa8359a194610c55adfff04f
--- sources/gui/qml/pages/pretreatment/create/PreTreatmentCreateTreatmentSettings.qml	(.../PreTreatmentCreateTreatmentSettings.qml)	(revision 1132f049e169cc87a059261f72fca0ceb7d739f1)
+++ sources/gui/qml/pages/pretreatment/create/PreTreatmentCreateTreatmentSettings.qml	(.../PreTreatmentCreateTreatmentSettings.qml)	(revision 1a46e7e1fd9da0fcfa8359a194610c55adfff04f)
@@ -34,6 +34,7 @@
     }
 
     function setPresetParameters () {
+        vTreatmentCreate.dialysateTempSet = true
         vTreatmentCreate.dialysateTemp = vTreatmentRanges.dialysateTempDef
     }
 
@@ -398,8 +399,8 @@
             defaultValue    : vTreatmentRanges.dialysateTempDef
             value           : vTreatmentCreate.dialysateTemp
             decimal         : Variables.dialysateTempPrecision
-            isActive        : true
-
+            isActive        : vTreatmentCreate.dialysateTempSet
+            onDidActiveChange   : function(vState) {  vTreatmentCreate.dialysateTempSet = vState }
             onDidChange     : function(vValue) {
                 if ( ! _dialysateTemperature.valid ) { vTreatmentCreate.dialysateTempRejectReason = Variables.noRejectReason }
                 vTreatmentCreate.dialysateTemp = vValue