Index: dialin/common/dg_defs.py
===================================================================
diff -u -r3263cf899c0b76f1521d600402df327546af6bd9 -rffd2531e22a937ce067e3d2a5846e29625f59603
--- dialin/common/dg_defs.py	(.../dg_defs.py)	(revision 3263cf899c0b76f1521d600402df327546af6bd9)
+++ dialin/common/dg_defs.py	(.../dg_defs.py)	(revision ffd2531e22a937ce067e3d2a5846e29625f59603)
@@ -109,16 +109,15 @@
 
 @unique
 class DGFillModeStates(DialinEnum):
-    DG_FILL_MODE_STATE_START = 0                           # Start fill mode state
-    DG_FILL_MODE_STATE_TEST_INLET_WATER = 1                # Test inlet water quality state
-    DG_FILL_MODE_STATE_PRIME_CONCENTRATE_LINES = 2         # Prime the acid and bicarb concentrate lines
-    DG_FILL_MODE_STATE_FLUSH_BUBBLES = 3                   # Flush the bubbles in the lines state
-    DG_FILL_MODE_STATE_TEST_BICARB_CONDUCTIVITY = 4        # Test the conductivity range of the bicarb concentrate state
-    DG_FILL_MODE_STATE_TEST_ACID_CONDUCTIVITY = 5          # Test the conductivity range of the acid concentrate state
-    DG_FILL_MODE_STATE_PRODUCE_DIALYSATE = 6               # Dialysate production state
-    DG_FILL_MODE_STATE_DELIVER_DIALYSATE = 7               # Dialysate deliver state
-    DG_FILL_MODE_STATE_PAUSED = 8                          # Dialysate generation pause state
-    NUM_OF_DG_FILL_MODE_STATES = 9                         # Number of fill mode states
+    DG_FILL_MODE_STATE_TEST_INLET_WATER = 0                # Test inlet water quality state
+    DG_FILL_MODE_STATE_PRIME_CONCENTRATE_LINES = 1         # Prime the acid and bicarb concentrate lines
+    DG_FILL_MODE_STATE_FLUSH_BUBBLES = 2                   # Flush the bubbles in the lines state
+    DG_FILL_MODE_STATE_TEST_BICARB_CONDUCTIVITY = 3        # Test the conductivity range of the bicarb concentrate state
+    DG_FILL_MODE_STATE_TEST_ACID_CONDUCTIVITY = 4          # Test the conductivity range of the acid concentrate state
+    DG_FILL_MODE_STATE_PRODUCE_DIALYSATE = 5               # Dialysate production state
+    DG_FILL_MODE_STATE_DELIVER_DIALYSATE = 6               # Dialysate deliver state
+    DG_FILL_MODE_STATE_PAUSED = 7                          # Dialysate generation pause state
+    NUM_OF_DG_FILL_MODE_STATES = 8                         # Number of fill mode states
 
 
 @unique