Index: firmware/App/Services/SystemCommMessages.c
===================================================================
diff -u -r7838caf7aff7f6a3d890d21c13a4a695782c97bd -rc0375e039dd42ecf7b7d68ce7f2407e52dfe83eb
--- firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 7838caf7aff7f6a3d890d21c13a4a695782c97bd)
+++ firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision c0375e039dd42ecf7b7d68ce7f2407e52dfe83eb)
@@ -22,6 +22,7 @@
 #include "Accel.h"
 #include "ConcentratePumps.h"
 #include "ConductivitySensors.h"
+#include "Fans.h"
 #include "FPGA.h"
 #include "Heaters.h"
 #include "ModeFlush.h"
@@ -3603,6 +3604,37 @@
 }
 
 /*********************************************************************//**
+ * @brief
+ * The handleFansRPMOverride function handles a request to override a fans RPM value.
+ * @details Inputs: none
+ * @details Outputs: message handled
+ * @param message a pointer to the message to handle
+ * @return none
+ *************************************************************************/
+void handleFansRPMOverride( MESSAGE_T *message )
+{
+    TEST_OVERRIDE_ARRAY_PAYLOAD_T payload;
+    BOOL result = FALSE;
+
+    // verify payload length
+    if ( sizeof(TEST_OVERRIDE_ARRAY_PAYLOAD_T) == message->hdr.payloadLen )
+    {
+        memcpy( &payload, message->payload, sizeof(TEST_OVERRIDE_ARRAY_PAYLOAD_T) );
+        if ( FALSE == payload.reset )
+        {
+            result = testSetFanRPMOverride( payload.index, payload.state.f32 );
+        }
+        else
+        {
+            result = testResetFanRPMOverride( payload.index );
+        }
+    }
+
+    // respond to request
+    sendTestAckResponseMsg( (MSG_ID_T)message->hdr.msgID, result );
+}
+
+/*********************************************************************//**
 * @brief
 * The handleStartStopDGChemicalDisinfect function handles a request to start
 * or stop DG chemical disinfect mode.