Index: firmware/App/Controllers/DialInFlow.c
===================================================================
diff -u -r85f1940ac2b4b76181ca364693332c2ae276f2ba -r8ff0ddc0009b5c03c35c3f01db10700e8b98b3dd
--- firmware/App/Controllers/DialInFlow.c	(.../DialInFlow.c)	(revision 85f1940ac2b4b76181ca364693332c2ae276f2ba)
+++ firmware/App/Controllers/DialInFlow.c	(.../DialInFlow.c)	(revision 8ff0ddc0009b5c03c35c3f01db10700e8b98b3dd)
@@ -79,8 +79,9 @@
 static const U32 DIP_OFF_ERROR_PERSIST         = ((5 * MS_PER_SECOND) / TASK_PRIORITY_INTERVAL);
 /// Persist time (task intervals) motor speed error condition.
 static const U32 DIP_MOTOR_SPEED_ERROR_PERSIST = ((5 * MS_PER_SECOND) / TASK_PRIORITY_INTERVAL);
-/// Rotor speed persist time test needs a minimum number of rotations.
-static const U32 DIP_ROTOR_ERROR_PERSIST_ROTATION_MIN = 3;
+/// Rotor speed persist time test needs a minimum number of rotations or time.
+static const U32 DIP_ROTOR_ERROR_PERSIST_ROTATION_MIN = 10;
+static const U32 DIP_ROTOR_ERROR_PERSIST_TIME_MIN = (10 * MS_PER_SECOND);
 /// Persist time (task intervals) pump direction error condition.
 static const U32 DIP_DIRECTION_ERROR_PERSIST   = (250 / TASK_PRIORITY_INTERVAL);
 /// Time threshold to trigger an alarm if Dialysate flow data has not arrived within 3 seconds
@@ -1069,16 +1070,19 @@
 U32 getPumpRotorErrorPersistTime( F32 mtr_rpm, F32 gear_ratio )
 {
     U32 err_persist_time = HEX_32_BIT_FULL_SCALE;  // 49 days
-    U32 temporaryPersistentTimeout = 10 * MS_PER_SECOND;
     F32 absMotRPM = fabs( mtr_rpm );
 
     if ( absMotRPM > NEARLY_ZERO )
     {
         /// Calculate persist time for rotor speed error condition.
         err_persist_time = ( ( (F32)DIP_ROTOR_ERROR_PERSIST_ROTATION_MIN / ( absMotRPM / gear_ratio / (F32)SEC_PER_MIN ) ) * (F32)MS_PER_SECOND );
+        if ( DIP_ROTOR_ERROR_PERSIST_TIME_MIN > err_persist_time )
+        {
+            err_persist_time = DIP_ROTOR_ERROR_PERSIST_TIME_MIN;
+        }
     }
 
-   return err_persist_time + temporaryPersistentTimeout;
+   return err_persist_time;
 }
 
 /*********************************************************************//**