Index: firmware/App/Controllers/AirPump.c
===================================================================
diff -u -rcecd0a4cd30e14aa9a193ca3e7bf8a27e7a7e5e4 -ra452377c3d89ff36fa90faef5e3790e2322237a3
--- firmware/App/Controllers/AirPump.c	(.../AirPump.c)	(revision cecd0a4cd30e14aa9a193ca3e7bf8a27e7a7e5e4)
+++ firmware/App/Controllers/AirPump.c	(.../AirPump.c)	(revision a452377c3d89ff36fa90faef5e3790e2322237a3)
@@ -101,7 +101,8 @@
     {
         result = FALSE;
     }
-    else if ( state >= AIR_PUMP_STATE_INIT && state < NUM_OF_AIR_PUMP_STATES )
+    // unsigned integer never be less than 0
+    else if ( state < NUM_OF_AIR_PUMP_STATES )
     {
         currentAirPumpState = state;
         // power level should be 0 (OFF) when pump state is not ON
@@ -286,6 +287,7 @@
 BOOL testSetAirPump( MESSAGE_T *message )
 {
     BOOL result = FALSE;
+
     // Verify tester has logged in with TD and override type is valid
     if ( TRUE == isTestingActivated() )
     {