Index: firmware/App/Modes/TreatmentStop.c
===================================================================
diff -u -r76350fb0af4be9ae98e9f8af825734363f60f4e6 -rc021768acf8408116a87585e21c2237713d6c825
--- firmware/App/Modes/TreatmentStop.c	(.../TreatmentStop.c)	(revision 76350fb0af4be9ae98e9f8af825734363f60f4e6)
+++ firmware/App/Modes/TreatmentStop.c	(.../TreatmentStop.c)	(revision c021768acf8408116a87585e21c2237713d6c825)
@@ -34,8 +34,10 @@
 
 // ********** private definitions **********
 
-/// Maximum time in this mode before blood sitting warning given (in general task intervals).
+/// Maximum time in this mode before blood sitting alarm given (in general task intervals).
 static const U32 MAX_TIME_BLOOD_SITTING = ( ( 5 * SEC_PER_MIN * MS_PER_SECOND ) / TASK_GENERAL_INTERVAL );
+/// Maximum time in this mode before blood sitting warning given (in general task intervals).
+static const U32 WARN_TIME_BLOOD_SITTING = ( ( 4 * SEC_PER_MIN * MS_PER_SECOND ) / TASK_GENERAL_INTERVAL );
 /// Treatment stop status broadcast interval.
 #define TREATMENT_STOP_DATA_PUBLISH_INTERVAL   ( MS_PER_SECOND / TASK_GENERAL_INTERVAL )
 
@@ -139,8 +141,12 @@
 void execTreatmentStop( void )
 {
     // Ensure we do not sit in stopped state for too long
-    if ( ++bloodSittingTimerCtr > MAX_TIME_BLOOD_SITTING )
+    if ( ++bloodSittingTimerCtr > WARN_TIME_BLOOD_SITTING )
     {
+        activateAlarmNoData( ALARM_ID_BLOOD_SITTING_WARNING );
+    }
+    if ( bloodSittingTimerCtr > MAX_TIME_BLOOD_SITTING )
+    {
         activateAlarmNoData( ALARM_ID_TREATMENT_STOPPED_NO_RINSEBACK );
     }