Index: firmware/App/Controllers/BalancingChamber.c
===================================================================
diff -u -r29ac3bdd9dc12a72ad819234914186843625d8e1 -rbdee7caad13de484d50de4089497725c44a43c74
--- firmware/App/Controllers/BalancingChamber.c	(.../BalancingChamber.c)	(revision 29ac3bdd9dc12a72ad819234914186843625d8e1)
+++ firmware/App/Controllers/BalancingChamber.c	(.../BalancingChamber.c)	(revision bdee7caad13de484d50de4089497725c44a43c74)
@@ -207,7 +207,12 @@
     // Fill bicarb chamber once every 60secs.
     if ( bicarbChamberPeriodicFillCounter >= BICARB_CHAMBER_PERIODIC_FILL_TIME )
     {
-        setBicarbChamberFillRequested();
+        if ( FALSE == setBicarbChamberFillRequested() )
+        {
+            // TODO
+            //drybicart state machines are combined and so this is not an issue in future
+            //set alarm ?
+        }
         bicarbChamberPeriodicFillCounter = 0;
     }
 #endif