Index: firmware/App/Controllers/PresOccl.c
===================================================================
diff -u -r5d21baeb59273eb0f9fa54d8e4802fa31abbdbab -r4cb7ce68f0458ecca1ba1fbb596bc26a4bc39226
--- firmware/App/Controllers/PresOccl.c	(.../PresOccl.c)	(revision 5d21baeb59273eb0f9fa54d8e4802fa31abbdbab)
+++ firmware/App/Controllers/PresOccl.c	(.../PresOccl.c)	(revision 4cb7ce68f0458ecca1ba1fbb596bc26a4bc39226)
@@ -456,11 +456,12 @@
     if ( PRESSURE_LIMITS_STATE_STABILIZATION == currPresLimitsState )
     {
         U32 currentTime = getMSTimerCount();
-        U32 expiredTime =  ( currentTime > stabilizationStartTimeMs ) ? ( currentTime - stabilizationStartTimeMs ) :
-                                                                        ( ( 0xFFFFFFFF - stabilizationStartTimeMs ) + currentTime + 1 ) ;
-        // if pressure is already stabilized enough, assign the short stabilize time for the recent event ( air pump on). else,
-        // leave the current/on going stabilization to expire due to long pending stable time to settle down the pressure.
-        if ( expiredTime >  PRES_LIMIT_MIN_STABILIZATION_TIME_IN_MS )
+        U32 expiredTime = u32DiffWithWrap( stabilizationStartTimeMs , currentTime );
+
+        // if pressure is already stabilized enough, assign the short stabilize time for the recent event ( air pump on).
+        // else,leave the current/on going stabilization to expire due to long pending stable time to settle down the pressure.
+        // allow Normal stabilization on a case when user updates flow rate or UF rate etc.,
+        if ( expiredTime >  PRES_LIMIT_MIN_STABILIZATION_TIME_IN_MS || useShort == FALSE )
         {
             useShortStabilizeTime    = useShort;
             stabilizationStartTimeMs = getMSTimerCount();