Index: firmware/App/Tasks/TaskPriority.c
===================================================================
diff -u -r7278aeac8fdd894067a05c3bd3a177d38c0b0803 -rc5e51dd7c1fd3f74823da22d7e7a0ca9b83cb196
--- firmware/App/Tasks/TaskPriority.c	(.../TaskPriority.c)	(revision 7278aeac8fdd894067a05c3bd3a177d38c0b0803)
+++ firmware/App/Tasks/TaskPriority.c	(.../TaskPriority.c)	(revision c5e51dd7c1fd3f74823da22d7e7a0ca9b83cb196)
@@ -109,7 +109,7 @@
 
     //TODO: revert back once HDF issue resolved.
     // Monitor Substitution pump
-    //execSubstitutionPumpMonitor();
+    execSubstitutionPumpMonitor();
 
     // Second pass for FPGA
     execFPGA( FALSE );