Index: firmware/App/Controllers/AirTrap.c
===================================================================
diff -u -rdb291cc22fd8f10e6e47cad468e14ed5590a94f2 -r437aa0eeb7df7ddc8ea58dd5623be2911f4cdff2
--- firmware/App/Controllers/AirTrap.c	(.../AirTrap.c)	(revision db291cc22fd8f10e6e47cad468e14ed5590a94f2)
+++ firmware/App/Controllers/AirTrap.c	(.../AirTrap.c)	(revision 437aa0eeb7df7ddc8ea58dd5623be2911f4cdff2)
@@ -367,7 +367,7 @@
 
         setValveAirTrap( STATE_OPEN );
         fillStartTime = getMSTimerCount();
-        SEND_EVENT_WITH_2_U32_DATA( HD_EVENT_AIR_TRAP_FILL, 0, 0 );
+        SEND_EVENT_WITH_2_U32_DATA( HD_EVENT_AIR_TRAP_FILL, STATE_OPEN, 0 );
         result = AIR_TRAP_VALVE_OPEN_STATE;
     }
 
@@ -396,6 +396,8 @@
     else if ( AIR_TRAP_LEVEL_FLUID == getAirTrapLevel( AIR_TRAP_LEVEL_SENSOR_LOWER ) )
     {
         setValveAirTrap( STATE_CLOSED );
+        signalLowVenousPressureCheck();
+        SEND_EVENT_WITH_2_U32_DATA( HD_EVENT_AIR_TRAP_FILL, STATE_CLOSED, 0 );
         result = AIR_TRAP_VALVE_CLOSED_STATE;
     }
     return result;