Index: firmware/App/Controllers/AirTrap.c
===================================================================
diff -u -r8e4a186b144ce6bb0de2ca04ae623f63f2ee525e -r447486e03296134fad2a08e6a9c3a02b52d3e368
--- firmware/App/Controllers/AirTrap.c	(.../AirTrap.c)	(revision 8e4a186b144ce6bb0de2ca04ae623f63f2ee525e)
+++ firmware/App/Controllers/AirTrap.c	(.../AirTrap.c)	(revision 447486e03296134fad2a08e6a9c3a02b52d3e368)
@@ -201,10 +201,7 @@
     }
     else
     {
-        if ( airTrapUpperLevelCtr > 0 )
-        {
-            airTrapUpperLevelCtr = 0;
-        }
+        airTrapUpperLevelCtr = 0;
     }
 
     // Check level readings are valid
Index: firmware/App/Services/SystemCommMessages.c
===================================================================
diff -u -rd280bbf09b9eff1be46517786356bb0cac8afa02 -r447486e03296134fad2a08e6a9c3a02b52d3e368
--- firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision d280bbf09b9eff1be46517786356bb0cac8afa02)
+++ firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 447486e03296134fad2a08e6a9c3a02b52d3e368)
@@ -6997,7 +6997,7 @@
     msg.hdr.payloadLen = sizeof(CURRENT_TREATMENT_PARAMS_DATA_PAYLOAD_T);
     memcpy(payloadPtr, &current_params, sizeof(CURRENT_TREATMENT_PARAMS_DATA_PAYLOAD_T));
 
-    return serializeMessage(msg, COMM_BUFFER_OUT_CAN_PC, ACK_REQUIRED );
+    return serializeMessage(msg, COMM_BUFFER_OUT_CAN_PC, ACK_NOT_REQUIRED );
 }
 
 /*********************************************************************//**