Index: firmware/App/Services/Reservoirs.c
===================================================================
diff -u -ra1b8dbb69c4bd2f0cc22e62bede7015c9307d378 -rebbb1f85550a1f9b8f946655f7b2b63f76fbf67d
--- firmware/App/Services/Reservoirs.c	(.../Reservoirs.c)	(revision a1b8dbb69c4bd2f0cc22e62bede7015c9307d378)
+++ firmware/App/Services/Reservoirs.c	(.../Reservoirs.c)	(revision ebbb1f85550a1f9b8f946655f7b2b63f76fbf67d)
@@ -38,7 +38,7 @@
 #define DEFAULT_FILL_VOLUME_ML          1700                                            ///< Default fill volume for treatment in mL.
 #define DISINFECT_FILL_VOLUME_ML        2400                                            ///< Fill volume for disinfection in mL.
 #define MAX_FILL_VOLUME_ML              MAX_RESERVOIR_VOLUME_ML                         ///< Maximum fill volume in mL.
-#define DEFAULT_DRAIN_VOLUME_ML         100                                             ///< Default drain volume in mL.
+#define DEFAULT_DRAIN_VOLUME_ML         0                                               ///< Default drain volume in mL.
 #define MAX_DRAIN_VOLUME_ML             MAX_RESERVOIR_VOLUME_ML                         ///< Maximum drain volume in mL.
 
 #define MAX_RESERVOIR_WEIGHT            10000                                           ///< Maximum reservoir weight in grams.
@@ -79,7 +79,6 @@
 void initReservoirs( void )
 {
     activeReservoir.data = (U32)DG_RESERVOIR_1;
-
     fillVolumeTargetMl.data = DEFAULT_FILL_VOLUME_ML;
     drainVolumeTargetMl.data = DEFAULT_DRAIN_VOLUME_ML;
 }
@@ -344,10 +343,36 @@
     }
 
     sendCommandResponseMsg( &cmdResponse );
-}
+}
 
 /*********************************************************************//**
  * @brief
+ * The tareReservoir function sets the tare load cell variable to TRUE.
+ * @details Inputs: none
+ * @details Outputs: none
+ * @return none
+ *************************************************************************/
+void tareReservoir( void )
+{
+    tareLoadCellRequest = TRUE;
+}
+
+/*********************************************************************//**
+ * @brief
+ * The resetReservoirsLowestWeight function resets the lowest load cell
+ * weight of the reservoirs.
+ * @details Inputs: reservoirLowestWeight
+ * @details Outputs: reservoirLowestWeight
+ * @return none
+ *************************************************************************/
+void resetReservoirsLowestWeight( void )
+{
+    reservoirLowestWeight[ DG_RESERVOIR_1 ] = MAX_RESERVOIR_WEIGHT;
+    reservoirLowestWeight[ DG_RESERVOIR_2 ] = MAX_RESERVOIR_WEIGHT;
+}
+
+/*********************************************************************//**
+ * @brief
  * The getInactiveReservoir function gets the inactive reservoir.
  * @details Inputs: activeReservoir
  * @details Outputs: none
@@ -410,7 +435,21 @@
 BOOL hasTargetDrainVolumeBeenReached( DG_RESERVOIR_ID_T reservoirId, U32 timeout )
 {
     BOOL result = FALSE;
-    F32 const loadcellWeight = getLoadCellSmallFilteredWeight( associatedLoadCell[ reservoirId ] );
+
+    F32 loadcellWeight = 0.0;
+
+    // TODO remove this code once the load cell is repaired
+    if ( DG_RESERVOIR_1 == reservoirId )
+    {
+        loadcellWeight = getLoadCellSmallFilteredWeight( LOAD_CELL_RESERVOIR_1_BACKUP );
+    }
+    else
+    {
+        loadcellWeight = getLoadCellSmallFilteredWeight( associatedLoadCell[ reservoirId ] );
+    }
+    // TODO remove the above code the load cell is repaired
+
+    //F32 const loadcellWeight = getLoadCellSmallFilteredWeight( associatedLoadCell[ reservoirId ] );
     U32 const targetDrainVolume = getReservoirDrainVolumeTargetMl();
 
     if ( loadcellWeight < reservoirLowestWeight[ reservoirId ] )
@@ -440,21 +479,6 @@
 
 /*********************************************************************//**
  * @brief
- * The resetReservoirLoadCellsOffset function sets the reservoir's load cells
- * offset to zero.
- * @details Inputs: associateLoadCell[], redundantLoadCell[]
- * @details Outputs: reset reservoir's associate load cells auto calibration offset
- * @param reservoirId reservoir id
- * @return none
- *************************************************************************/
-void resetReservoirLoadCellsOffset( DG_RESERVOIR_ID_T reservoirId )
-{
-    resetLoadCellOffset( associatedLoadCell[ reservoirId ] );
-    resetLoadCellOffset( redundantLoadCell[ reservoirId ] );
-}
-
-/*********************************************************************//**
- * @brief
  * The getActiveReservoir function gets the active reservoir.
  * @details Inputs: activeReservoir
  * @details Outputs: none