Index: firmware/App/Modes/ModeHeatDisinfect.c
===================================================================
diff -u -rdf52e97b57868e3c2e0fb3f3dfa4c155514821be -r9cea87bcc9b7bdafa3622e9e8b3b40674575e389
--- firmware/App/Modes/ModeHeatDisinfect.c	(.../ModeHeatDisinfect.c)	(revision df52e97b57868e3c2e0fb3f3dfa4c155514821be)
+++ firmware/App/Modes/ModeHeatDisinfect.c	(.../ModeHeatDisinfect.c)	(revision 9cea87bcc9b7bdafa3622e9e8b3b40674575e389)
@@ -1979,6 +1979,17 @@
 }
 #define HELPER_FUNCTIONS
 #ifdef HELPER_FUNCTIONS
+/*********************************************************************//**
+ * @brief
+ * The checkGradientOutOfRange function checks to ensure that the
+ * temperature gradient between TPo and THd does not exceed the specified
+ * gradient.  If the heat disinfect status is changed, return true and
+ * update the status parameter.
+ * @details Inputs: none
+ * @details Outputs: alarmDetectedPendingTrigger
+ * @param *HEAT_DISINFECT_STATUS_T status
+ * @return Return true if status is updated, else false
+ *************************************************************************/
 static BOOL checkGradientOutOfRange(HEAT_DISINFECT_STATUS_T *status)
 {
     BOOL returnVal = FALSE;
@@ -2008,6 +2019,15 @@
 
 }
 
+/*********************************************************************//**
+ * @brief
+ * The checkResrvoirLoss function checks to see if any loss of volume has
+ * occurred in either reservoir.
+ * @details Inputs: none
+ * @details Outputs: alarmDetectedPendingTrigger, areRsrvrsLeaking
+ * @param *HEAT_DISINFECT_STATUS_T status
+ * @return Return true if status is updated, else false
+ *************************************************************************/
 static BOOL checkResrvoirLoss(HEAT_DISINFECT_STATUS_T *status)
 {
     BOOL returnVal = FALSE;
@@ -2042,6 +2062,17 @@
 
 }
 
+/*********************************************************************//**
+ * @brief
+ * The checkHeatDisinfectTimeout function checks to see if the heat
+ * disinfect process has timed out.
+ * @details Inputs: none
+ * @details Outputs: isPartialDisinfectInProgress, heatDisinfectTimer,
+ *                   isPartialDisinfectInProgress, targetDisinfectTime,
+ *                   alarmDetectedPendingTrigger
+ * @param *HEAT_DISINFECT_STATUS_T status
+ * @return Return true if status is updated, else false
+ *************************************************************************/
 static BOOL checkHeatDisinfectTimeout(HEAT_DISINFECT_STATUS_T *status)
 {
     BOOL returnVal = FALSE;
@@ -2096,6 +2127,15 @@
 
 }
 
+/*********************************************************************//**
+ * @brief
+ * The checkHeatDisinfectComplete function checks if the heat disinfect
+ * process is complete.
+ * @details Inputs: none
+ * @details Outputs: targetDisinfectTime, isPartialDisinfectInProgress
+ * @param *HEAT_DISINFECT_STATUS_T status
+ * @return Return true if status is updated, else false
+ *************************************************************************/
 static BOOL checkHeatDisinfectComplete(HEAT_DISINFECT_STATUS_T *status)
 {
     BOOL returnVal = FALSE;
@@ -2155,6 +2195,7 @@
     BOOL isR1OutOfRange = fabs( getLoadCellSmallFilteredWeight( LOAD_CELL_RESERVOIR_1_PRIMARY ) - R1HeatDisinfectVol ) > RSRVRS_MAX_TARGET_VOL_CHANGE_ML;
     BOOL isR2OutOfRange = fabs( getLoadCellSmallFilteredWeight( LOAD_CELL_RESERVOIR_2_PRIMARY ) - R2HeatDisinfectVol ) > RSRVRS_MAX_TARGET_VOL_CHANGE_ML;
 
+// checkGradientOutOfRange
     // Check if the temperature gradient in between the coldest and the hottest spot is more than the specified temperature and
     // the timer has not started yet, start it
     bool gradientOutOfRange = ( fabs( TPoTemp - ThdTemp ) > HEAT_DISINFECT_MAX_TEMP_GRADIENT_C ) ? TRUE : FALSE;
@@ -2171,6 +2212,7 @@
         alarmDetectedPendingTrigger = ALARM_ID_DG_HEAT_DISINFECT_TEMP_GRAD_OUT_OF_RANAGE;
         status                      = HEAT_DISINFECT_TEMP_GRADIENT_OUT_OF_RANGE;
     }
+// End checkGradientOutOfRange
 
     if ( ( fabs( TPoTemp - ThdTemp ) > HEAT_DISINFECT_MAX_TEMP_GRADIENT_C ) && ( 0 == tempGradOutOfRangeTimer ) )
     {
@@ -2182,7 +2224,9 @@
         alarmDetectedPendingTrigger = ALARM_ID_DG_HEAT_DISINFECT_TEMP_GRAD_OUT_OF_RANAGE;
         status                      = HEAT_DISINFECT_TEMP_GRADIENT_OUT_OF_RANGE;
     }
+// End checkGradientOutOfRange
 
+    // checkResrovoirLoss
     // Check if either reservoir 1 or reservoir 2 are losing volume more than allowed volume
     if ( ( TRUE == isR1OutOfRange ) || ( TRUE == isR2OutOfRange ) )
     {
@@ -2205,7 +2249,9 @@
     {
         areRsrvrsLeaking = FALSE;
     }
+// End checkResrvoiLoss
 
+//  checkHeatDisinfectTimeout
     // If the coldest spot which is THd is less than minimum heat disinfect temperature,
     // reset the heat disinfect timers and check whether heating up has timed out
     if ( ThdTemp < HEAT_DISINFECT_START_TEMPERATURE_C )
@@ -2246,7 +2292,9 @@
     {
         status = HEAT_DISINFECT_DISINFECT_IN_PROGRESS;
     }
+// End checkHeatdisinfecTimeout
 
+// checkHeatDisinfectComplete
     // If heat disinfect temperature has been reached, check if this stage of heat disinfect is done
     if ( ( TRUE == isPartialDisinfectInProgress ) && ( TRUE == didTimeout( heatDisinfectTimer, HEAT_DISINFECT_TIME_MS ) ) )
     {
@@ -2261,6 +2309,7 @@
 
 
     return status;
+// End CheckHeatDisinfectComplete
 #endif
 }