Index: firmware/App/Modes/ModePreTreat.c
===================================================================
diff -u -rdf4242fcc91f8cd1aada438b33fa845c223d0e0e -raec0fd5f5f4ba9845d8bad38a782389fdc42368b
--- firmware/App/Modes/ModePreTreat.c	(.../ModePreTreat.c)	(revision df4242fcc91f8cd1aada438b33fa845c223d0e0e)
+++ firmware/App/Modes/ModePreTreat.c	(.../ModePreTreat.c)	(revision aec0fd5f5f4ba9845d8bad38a782389fdc42368b)
@@ -598,7 +598,7 @@
 
     signalBloodPumpHardStop();
     signalDialOutPumpHardStop();
-    setDialInPumpTargetFlowRate( DIP_PATIENT_CONNECTION_FLOW_RATE_ML_MIN, MOTOR_DIR_FORWARD, PUMP_CONTROL_MODE_OPEN_LOOP );
+    setDialInPumpTargetFlowRate( DIP_PATIENT_CONNECTION_FLOW_RATE_ML_MIN, MOTOR_DIR_FORWARD, PUMP_CONTROL_MODE_CLOSED_LOOP );
     cmdStartDGTrimmerHeater();
 }