Index: firmware/App/Modes/ModeService.c
===================================================================
diff -u -r8b73263b38f449dacc0795c67a7cf6240cb79026 -r4bae2d153f4242a52c8602df3e5161d6f1f122ef
--- firmware/App/Modes/ModeService.c	(.../ModeService.c)	(revision 8b73263b38f449dacc0795c67a7cf6240cb79026)
+++ firmware/App/Modes/ModeService.c	(.../ModeService.c)	(revision 4bae2d153f4242a52c8602df3e5161d6f1f122ef)
@@ -1,6 +1,6 @@
 /**************************************************************************
 *
-* Copyright (c) 2019-2022 Diality Inc. - All Rights Reserved.
+* Copyright (c) 2019-2023 Diality Inc. - All Rights Reserved.
 *
 * THIS CODE MAY NOT BE COPIED OR REPRODUCED IN ANY FORM, IN PART OR IN
 * WHOLE, WITHOUT THE EXPLICIT PERMISSION OF THE COPYRIGHT OWNER.
@@ -15,11 +15,16 @@
 *
 ***************************************************************************/
 
+#include "BloodFlow.h"
 #include "Buttons.h"
+#include "DGInterface.h"
+#include "DialInFlow.h"
+#include "DialOutFlow.h"
 #include "ModeService.h"
 #include "OperationModes.h"
 #include "Switches.h"
 #include "SyringePump.h"
+#include "Valves.h"
 
 /**
  *  @addtogroup HDServiceMode
@@ -58,6 +63,19 @@
     setAlarmUserActionEnabled( ALARM_USER_ACTION_RINSEBACK, FALSE );
     setAlarmUserActionEnabled( ALARM_USER_ACTION_END_TREATMENT, FALSE );
 
+    // Start out with all actuators de-energized in service mode
+    cmdStopDGTrimmerHeater();
+    stopSyringePump();
+    signalBloodPumpHardStop();
+    signalDialInPumpHardStop();
+    signalDialOutPumpHardStop();
+    // TODO - turn off air pump
+    setValveAirTrap( STATE_CLOSED );
+    setValvePosition( VDI, VALVE_POSITION_C_CLOSE );
+    setValvePosition( VDO, VALVE_POSITION_C_CLOSE );
+    setValvePosition( VBA, VALVE_POSITION_C_CLOSE );
+    setValvePosition( VBV, VALVE_POSITION_C_CLOSE );
+
     return 0;
 }