Index: firmware/App/Controllers/Ultrafiltration.c
===================================================================
diff -u -r78dc7a98fb2a3d28bbdeb4eade1bba03641433d3 -r05ab87b4de779f06243fa1e87a0402b659a6fa3e
--- firmware/App/Controllers/Ultrafiltration.c	(.../Ultrafiltration.c)	(revision 78dc7a98fb2a3d28bbdeb4eade1bba03641433d3)
+++ firmware/App/Controllers/Ultrafiltration.c	(.../Ultrafiltration.c)	(revision 05ab87b4de779f06243fa1e87a0402b659a6fa3e)
@@ -147,8 +147,9 @@
  *************************************************************************/
 static void updateUFRequest( void )
 {
-    F32 qd      = getTDDialysateFlowrate();
-    BOOL bypass = getTDDialyzerBypass();
+    F32 qd           = getTDDialysateFlowrate();
+    BOOL bypass      = getTDDialyzerBypass();
+    BOOL prevUFState = isUltrafiltrationRequested;
 
     // update latest UF run/pause request
     // if qd is zero or dialyzer is bypassed, UF pump should be turn off
@@ -160,6 +161,12 @@
     {
         isUltrafiltrationRequested = FALSE;
     }
+
+    // event update on state switch
+    if( prevUFState != isUltrafiltrationRequested )
+    {
+        SEND_EVENT_WITH_2_U32_DATA( DD_EVENT_UF_PUMP_ON_OFF, prevUFState, isUltrafiltrationRequested );
+    }
 }
 
 /*********************************************************************//**