Index: firmware/App/Modes/Dialysis.c
===================================================================
diff -u -r2b6dfea004f84ed54559fb49c4facfc1bfb0c303 -r94895e32fe18e78b98fe3bb7786838cf00afdbfa
--- firmware/App/Modes/Dialysis.c	(.../Dialysis.c)	(revision 2b6dfea004f84ed54559fb49c4facfc1bfb0c303)
+++ firmware/App/Modes/Dialysis.c	(.../Dialysis.c)	(revision 94895e32fe18e78b98fe3bb7786838cf00afdbfa)
@@ -153,12 +153,13 @@
 void startDialysis( void )
 {
     U32 tempDPORate = (setDialysateFlowRate * 6) / 10;  // TODO - temporary fudge factor - remove later
+
     lastUFTimeStamp = getMSTimerCount();
     setDialOutUFVolumes( refUFVolume, measUFVolume );
     setBloodPumpTargetFlowRate( setBloodFlowRate, MOTOR_DIR_FORWARD, PUMP_CONTROL_MODE_OPEN_LOOP );
     setDialInPumpTargetFlowRate( setDialysateFlowRate, MOTOR_DIR_FORWARD, PUMP_CONTROL_MODE_OPEN_LOOP );
-    // setDialOutPumpTargetRate( setDialysateFlowRate + FLOAT_TO_INT_WITH_ROUND( setUFRate ), MOTOR_DIR_FORWARD, PUMP_CONTROL_MODE_CLOSED_LOOP );  // TODO - restore later
-    setDialOutPumpTargetRate( tempDPORate + FLOAT_TO_INT_WITH_ROUND( setUFRate ), MOTOR_DIR_FORWARD, PUMP_CONTROL_MODE_CLOSED_LOOP );  // TODO - test code - remove later
+    // setDialOutPumpTargetRate( setDialysateFlowRate + (S32)setUFRate), MOTOR_DIR_FORWARD, PUMP_CONTROL_MODE_CLOSED_LOOP );  // TODO - restore later
+    setDialOutPumpTargetRate( tempDPORate + (S32)setUFRate, MOTOR_DIR_FORWARD, PUMP_CONTROL_MODE_CLOSED_LOOP );  // TODO - test code - remove later
     // TODO - Heparin pump
 }
 
@@ -493,7 +494,7 @@
     {
         F32 uFMeasRatePerHr = measUFVolume - lastUFVolumeChecked;
         F32 uFSetRatePerHr = ( setUFRate * (F32)MIN_PER_HOUR );
-        F32 uFRateError = uFSetRatePerHr - uFMeasRatePerHr;
+        F32 uFRateError = FABS( uFSetRatePerHr - uFMeasRatePerHr );
 
         // check UF accuracy
         if ( uFRateError > (F32)MAX_UF_ACCURACY_ERROR_ML_PER_HR )