Index: firmware/App/Modes/ModeHeatDisinfect.c
===================================================================
diff -u -r1e048040a2e68c3b14f0c094547c13eb7d1595a1 -r6225363b7538fd419d20fba31a050f546c682703
--- firmware/App/Modes/ModeHeatDisinfect.c	(.../ModeHeatDisinfect.c)	(revision 1e048040a2e68c3b14f0c094547c13eb7d1595a1)
+++ firmware/App/Modes/ModeHeatDisinfect.c	(.../ModeHeatDisinfect.c)	(revision 6225363b7538fd419d20fba31a050f546c682703)
@@ -86,12 +86,14 @@
 #define RSRVRS_DRAIN_TIMEOUT_MS                    ( 2 * SEC_PER_MIN * MS_PER_SECOND )                         ///< Reservoirs 1 & 2 drain timeout in ms.
 
 // Fill and heat water
-#define HEAT_DISINFECT_TARGET_TEMPERATURE_C        82.0F                                                       ///< Heat disinfect target water temperature in C.
-#define HEAT_DISINFECT_START_TEMPERATURE_C         81.0F                                                       ///< Heat disinfect minimum acceptable temperature in C.
+//wjb#define HEAT_DISINFECT_TARGET_TEMPERATURE_C        82.0F                                                       ///< Heat disinfect target water temperature in C.
+//wjb#define HEAT_DISINFECT_START_TEMPERATURE_C         81.0F                                                       ///< Heat disinfect minimum acceptable temperature in C.
+#define HEAT_DISINFECT_TARGET_TEMPERATURE_C        52.0F                                                       ///< Heat disinfect target water temperature in C.
+#define HEAT_DISINFECT_START_TEMPERATURE_C         51.0F                                                       ///< Heat disinfect minimum acceptable temperature in C.
 
 // R1 to R2 & R2 to R1 heat disinfect circulation
 #define HEAT_DISINFECT_TARGET_RO_FLOW_LPM          1.3F                                                        ///< Heat disinfect target RO flow rate in L/min.
-#define HEAT_DISINFECT_MAX_RO_PRESSURE_PSI         40                                                          ///< Heat disinfect maximum RO pressure in psi.
+#define HEAT_DISINFECT_MAX_RO_PRESSURE_PSI         30                                                          ///< Heat disinfect maximum RO pressure in psi.
 #define HEAT_DISINFECT_TARGET_DRAIN_PRES_PSI       12.0F                                                       ///< Heat disinfect target drain outlet pressure in psi.
 #define HEAT_DISINFECT_TIME_MS                     ( 10 * SEC_PER_MIN * MS_PER_SECOND )                        ///< Heat disinfect time for each section in milliseconds.
 #define HEAT_DISINFECT_START_TEMP_TIMOUT_MS        ( 4 * MIN_PER_HOUR * SEC_PER_MIN * MS_PER_SECOND )          ///< Heat disinfect reaching to minimum temperature timeout in milliseconds.
@@ -204,10 +206,13 @@
 static void publishHeatDisinfectData( void );
 static void monitorModeHeatDisinfect( void );
 
+//#define HELPER_FUNCTIONS
+#ifdef HELPER_FUNCTIONS
 static BOOL checkGradientOutOfRange(HEAT_DISINFECT_STATUS_T *status);
 static BOOL checkResrvoirLoss(HEAT_DISINFECT_STATUS_T *tatus);
 static BOOL checkHeatDisinfectTimeout(HEAT_DISINFECT_STATUS_T *status);
 static BOOL checkHeatDisinfectComplete(HEAT_DISINFECT_STATUS_T *status);
+#endif
 
 /*********************************************************************//**
  * @brief
@@ -1974,7 +1979,7 @@
 
     return status;
 }
-#define HELPER_FUNCTIONS
+
 #ifdef HELPER_FUNCTIONS
 /*********************************************************************//**
  * @brief