Index: firmware/App/Services/SystemCommMessages.h
===================================================================
diff -u -r8cf0fafa78ce14b5dbdf95510e957846660ac2b9 -r688bd3abbe26cdde15368c8769511d8cf152a721
--- firmware/App/Services/SystemCommMessages.h	(.../SystemCommMessages.h)	(revision 8cf0fafa78ce14b5dbdf95510e957846660ac2b9)
+++ firmware/App/Services/SystemCommMessages.h	(.../SystemCommMessages.h)	(revision 688bd3abbe26cdde15368c8769511d8cf152a721)
@@ -547,7 +547,7 @@
 void handleSendChemFlushPassFailToDG( U32 status );
 
 // MSG_ID_DG_START_STOP_HEAT_DISINFECT_ACTIVE_COOL
-BOOL sendDGStopActiveCoolModeCommand( void );
+BOOL sendDGStopActiveCoolModeCommand( BOOL start );
 
 // MSG_ID_DG_START_STOP_RO_PERMEATE_SAMPLE_MODE_CMD_REQUEST
 BOOL sendDGStartStopDGROPermeateSampleModeCommand( BOOL start );
@@ -564,6 +564,9 @@
 // MSG_ID_UI_HD_RESET_IN_SERVICE_MODE_REQUEST
 void handleUIHDResetInServiceModeRequest( MESSAGE_T* message );
 
+// MSG_ID_DG_START_STOP_NOCTURNAL_HEAT_DISINFECT
+BOOL sendDGStartNocturnalHeatDisinfectModeCommand( BOOL start );
+
 // *********** public test support message functions **********
 
 // MSG_TESTER_LOG_IN