Index: firmware/App/Modes/ModeFlush.c
===================================================================
diff -u -r93343475b961a704421944f94c1d322d89010170 -r07f24040a1f6773ceef7b6691eb9073cdccd4ffb
--- firmware/App/Modes/ModeFlush.c	(.../ModeFlush.c)	(revision 93343475b961a704421944f94c1d322d89010170)
+++ firmware/App/Modes/ModeFlush.c	(.../ModeFlush.c)	(revision 07f24040a1f6773ceef7b6691eb9073cdccd4ffb)
@@ -309,6 +309,9 @@
     // Set the actuators to drain R1
     setValveState( VRD1, VALVE_STATE_OPEN );
 
+    // Set VPO
+    setValveState( VPO, VALVE_STATE_FILL_C_TO_NC);
+
     setDrainPumpTargetRPM( DRAIN_PUMP_TARGET_RPM );
 
     flushUIState = FLUSH_UI_STATE_DRAIN_DEVICE;
@@ -350,6 +353,8 @@
         // Set the actuators to drain R2
         // NOTE: Drain pump is already on and VDr is already on drain state
         setValveState( VRD2, VALVE_STATE_OPEN );
+        // Set VPO
+        setValveState( VPO, VALVE_STATE_FILL_C_TO_NC);
 
         stateTimerStart = getMSTimerCount();
         rsrvr2Status = DG_RESERVOIR_ABOVE_TARGET;
@@ -664,6 +669,8 @@
             // Close VPi and VPd to drain
             setValveState(VPI, VALVE_STATE_CLOSED);
             setValveState(VPD, VALVE_STATE_DRAIN_C_TO_NO);
+            // Set VPO
+            setValveState( VPO, VALVE_STATE_FILL_C_TO_NC);
 
             stateTimerStart = getMSTimerCount();
             isThisInitialDrain = FALSE;