Index: dialin/common/dg_defs.py
===================================================================
diff -u -r4c63e5617400d2246d2e0290a9c63da4defbb2fc -r54dee6103756512f8bb7bf6f6170cfd4eaa3ea3b
--- dialin/common/dg_defs.py	(.../dg_defs.py)	(revision 4c63e5617400d2246d2e0290a9c63da4defbb2fc)
+++ dialin/common/dg_defs.py	(.../dg_defs.py)	(revision 54dee6103756512f8bb7bf6f6170cfd4eaa3ea3b)
@@ -146,6 +146,18 @@
 
 
 @unique
+class DGFlushUIStates(DialinEnum):
+    FLUSH_UI_STATE_NOT_RUNNING = 0
+    FLUSH_UI_STATE_NOT_DRAIN_DEVICE = 1
+    FLUSH_UI_STATE_NOT_FLUSH_RESERVOIRS = 2
+    FLUSH_UI_STATE_NOT_DRAIN_RESERVOIRS = 3
+    FLUSH_UI_STATE_NOT_FLUSH_RECIRCULATION_PATH = 4
+    FLUSH_UI_STATE_NOT_CANCEL_FLUSH = 5
+    FLUSH_UI_STATE_NOT_COMPLETE = 6
+    NUM_OF_FLUSH_UI_STATES = 7
+
+
+@unique
 class DGHeatDisinfectStates(DialinEnum):
     DG_HEAT_DISINFECT_STATE_START = 0                           # Heat disinfect, start mode state
     DG_HEAT_DISINFECT_STATE_DRAIN_R1 = 1                        # Heat disinfect, drain R1 state