Index: firmware/App/Modes/ModeService.c
===================================================================
diff -u -r7d4711edd7b40cd3e29f43e766f79a8a09586fe9 -rc2df1e4a1b450f5d83d2d3fc5c671e16c270e5d7
--- firmware/App/Modes/ModeService.c	(.../ModeService.c)	(revision 7d4711edd7b40cd3e29f43e766f79a8a09586fe9)
+++ firmware/App/Modes/ModeService.c	(.../ModeService.c)	(revision c2df1e4a1b450f5d83d2d3fc5c671e16c270e5d7)
@@ -17,6 +17,7 @@
 
 #include "ConcentratePumps.h"
 #include "CPLD.h"
+#include "LoadCell.h"
 #include "ModeService.h"
 #include "OperationModes.h"
 
@@ -59,6 +60,11 @@
     deenergizeActuators( NO_PARK_CONC_PUMPS );
     initServiceMode();
     setCurrentSubState( NO_SUB_STATE );
+    resetLoadCellOffset( LOAD_CELL_RESERVOIR_1_PRIMARY );
+    resetLoadCellOffset( LOAD_CELL_RESERVOIR_1_BACKUP );
+    resetLoadCellOffset( LOAD_CELL_RESERVOIR_2_PRIMARY );
+    resetLoadCellOffset( LOAD_CELL_RESERVOIR_2_BACKUP );
+
     return serviceState;
 }