Index: firmware/App/Controllers/AirPump.c
===================================================================
diff -u -r0299bdb0514a35999be37487ff332ecb3de163bd -rfbb77dff1aeac3b26529790ad6af0e63f5a1f578
--- firmware/App/Controllers/AirPump.c	(.../AirPump.c)	(revision 0299bdb0514a35999be37487ff332ecb3de163bd)
+++ firmware/App/Controllers/AirPump.c	(.../AirPump.c)	(revision fbb77dff1aeac3b26529790ad6af0e63f5a1f578)
@@ -279,8 +279,17 @@
             AIR_PUMP_SET_CMD_PAYLOAD_T payload;
 
             memcpy( &payload, msgPayload, sizeof( AIR_PUMP_SET_CMD_PAYLOAD_T ) );
-            setAirPumpState( (AIR_PUMP_STATE_T)payload.h12State, payload.h12Power );
-            result = TRUE;
+
+            // need to pass the result immediately to user when user enter invalid range
+            if ( ( payload.h12Power >= AIR_PUMP_DUTY_CYCLE_MIN ) && ( payload.h12Power <= AIR_PUMP_DUTY_CYCLE_MAX ) )
+            {
+                setAirPumpState( (AIR_PUMP_STATE_T)payload.h12State, payload.h12Power );
+                result = TRUE;
+            }
+            else
+            {
+                result = FALSE;
+            }
         }
     }