Index: firmware/App/Modes/ModeFault.c
===================================================================
diff -u -r696e732c9742535a58b9c65f243df7cd797d1423 -r7d4711edd7b40cd3e29f43e766f79a8a09586fe9
--- firmware/App/Modes/ModeFault.c	(.../ModeFault.c)	(revision 696e732c9742535a58b9c65f243df7cd797d1423)
+++ firmware/App/Modes/ModeFault.c	(.../ModeFault.c)	(revision 7d4711edd7b40cd3e29f43e766f79a8a09586fe9)
@@ -1,14 +1,14 @@
 /**************************************************************************
 *
-* Copyright (c) 2019-2022 Diality Inc. - All Rights Reserved.
+* Copyright (c) 2019-2024 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.
 *
 * @file    ModeFault.c
 *
 * @author  (last)      Dara Navaei
-* @date    (last)      12-Aug-2022
+* @date    (last)      29-Aug-2023
 *
 * @author  (original)  Dara Navaei
 * @date    (original)  05-Nov-2019
@@ -18,7 +18,9 @@
 #include "ConcentratePumps.h"
 #include "DrainPump.h"
 #include "Heaters.h"
+#include "ModeChemicalDisinfect.h"
 #include "ModeFault.h"
+#include "ModeHeatDisinfect.h"
 #include "NVDataMgmt.h"
 #include "OperationModes.h"
 #include "ROPump.h"
@@ -70,10 +72,10 @@
  *************************************************************************/
 U32 transitionToFaultMode( void )
 {
-    deenergizeActuators();
+    deenergizeActuators( PARK_CONC_PUMPS );
 
     initFaultMode();
-
+    setCurrentSubState( NO_SUB_STATE );
     // Publish POST failure status to UI if fault triggered in Init/POST mode
     if ( DG_MODE_INIT == getPreviousOperationMode() )
     {
@@ -88,6 +90,11 @@
     // the RTC time is read every second which requires the semaphore.
     releaseSemaphore( SEMAPHORE_RTC );
 
+#ifndef _RELEASE_
+    setHeatNelsonSupportMode( NELSON_NONE );
+    setChemNelsonSupportMode( NELSON_NONE );
+#endif
+
     return faultState;
 }
 
@@ -100,7 +107,7 @@
  *************************************************************************/
 U32 execFaultMode( void )
 {
-    deenergizeActuators();
+    deenergizeActuators( NO_PARK_CONC_PUMPS );
 
     // execute current fault state
     switch ( faultState )
@@ -114,7 +121,13 @@
             break;
 
         case DG_FAULT_STATE_COMPLETE:
-            // Do nothing
+            // Do nothing unless the test configuration to recover treatment is enabled
+            if ( ( TRUE == getTestConfigStatus( TEST_CONFIG_RECOVER_TREATMENT ) ) && ( TRUE == hasRecoverFromFaultModeBeenSet() ) )
+            {
+                DG_OP_MODE_T prevMode = getPreviousOperationMode();
+
+                requestNewOperationMode( prevMode );
+            }
             break;
 
         default:
@@ -143,9 +156,10 @@
  * de-energized state.
  * @details Inputs: none
  * @details Outputs: none
+ * @param parkPumps TRUE if concentrate pumps should be parked, FALSE if not
  * @return none
  *************************************************************************/
-void deenergizeActuators( void )
+void deenergizeActuators( BOOL parkPumps )
 {
     // Turn off the UV reactors
     turnOffUVReactor( INLET_UV_REACTOR );
@@ -165,8 +179,8 @@
     setValveStateDelayed( VRI, VALVE_STATE_R1_C_TO_NO, DELAY_VALVE_MS );
     setValveStateDelayed( VRF, VALVE_STATE_R2_C_TO_NO, DELAY_VALVE_MS );
 
-    requestConcentratePumpOff( CONCENTRATEPUMPS_CP1_ACID );
-    requestConcentratePumpOff( CONCENTRATEPUMPS_CP2_BICARB );
+    requestConcentratePumpOff( CONCENTRATEPUMPS_CP1_ACID, parkPumps );
+    requestConcentratePumpOff( CONCENTRATEPUMPS_CP2_BICARB, parkPumps );
     signalROPumpHardStop();
     signalDrainPumpHardStop();
     stopHeater( DG_PRIMARY_HEATER );