Index: firmware/App/Controllers/AirPump.c
===================================================================
diff -u -r2075fb989d74d881f2e73c19052aa32fa9d760a6 -rc8bc16e4ab55a0995f5282bc1b10bd9ee8656a87
--- firmware/App/Controllers/AirPump.c	(.../AirPump.c)	(revision 2075fb989d74d881f2e73c19052aa32fa9d760a6)
+++ firmware/App/Controllers/AirPump.c	(.../AirPump.c)	(revision c8bc16e4ab55a0995f5282bc1b10bd9ee8656a87)
@@ -32,7 +32,10 @@
 
 #define AIR_PUMP_DATA_PUB_INTERVAL          ( MS_PER_SECOND / TASK_GENERAL_INTERVAL )           ///< Air pump data publish interval.
 #define DATA_PUBLISH_COUNTER_START_COUNT    13                                                  ///< Air pump data publish start counter.
+#define AIR_PUMP_DUTY_CYCLE_MIN             0.0F                                                ///< Air pump minimum duty cycle in percentage
+#define AIR_PUMP_DUTY_CYCLE_MAX             100.0F                                              ///< Air pump maximum duty cycle in percentage
 
+
 #pragma pack(push, 1)
 /// Payload record structure for air pump test set command message payload.
 typedef struct
@@ -274,8 +277,15 @@
             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;
+            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;
+            }
         }
     }