Index: firmware/App/Controllers/DialOutFlow.c
===================================================================
diff -u -rded084860cbbde7fc763859c7c0991f13d77c8f9 -rb3712df3e9e729dc9d4e4b35a0c4567f07882d2f
--- firmware/App/Controllers/DialOutFlow.c	(.../DialOutFlow.c)	(revision ded084860cbbde7fc763859c7c0991f13d77c8f9)
+++ firmware/App/Controllers/DialOutFlow.c	(.../DialOutFlow.c)	(revision b3712df3e9e729dc9d4e4b35a0c4567f07882d2f)
@@ -53,7 +53,7 @@
 
 #define MAX_DIAL_OUT_PUMP_PWM_STEP_UP_CHANGE    0.0133F         ///< Maximum duty cycle change when ramping up ~ 200 mL/min/s.
 #define MAX_DIAL_OUT_PUMP_PWM_STEP_DN_CHANGE    0.02F           ///< Maximum duty cycle change when ramping down ~ 300 mL/min/s.
-#define MAX_DIAL_OUT_PUMP_PWM_DUTY_CYCLE        0.89F           ///< Controller will error if PWM duty cycle > 90%, so set max to 89%.
+#define MAX_DIAL_OUT_PUMP_PWM_DUTY_CYCLE        0.90F           ///< Controller will error if PWM duty cycle > 90%, so set max to 89%.
 #define MIN_DIAL_OUT_PUMP_PWM_DUTY_CYCLE        0.10F           ///< Controller will error if PWM duty cycle < 10%, so set min to 10%.
 #define MAX_DIAL_OUT_PUMP_PWM_OFFSET_CONTROL    0.4F            ///< Maximum PWM offset (added to DPi PWM duty cycle).
 #define MIN_DIAL_OUT_PUMP_PWM_OFFSET_CONTROL   -0.4F            ///< Minimum PWM offset (added to DPi PWM duty cycle).
@@ -1687,16 +1687,16 @@
 BOOL testSetDialOutPumpTargetDutyCycle( F32 value )
 {
     BOOL result = FALSE;
-    F32 targetRate = DOP_ML_PER_MIN_FROM_PWM( value );
     MOTOR_DIR_T dir = ( value < 0.0F ? MOTOR_DIR_REVERSE : MOTOR_DIR_FORWARD );
+    F32 absolutePWM = fabs( value );
+    F32 targetRate = DOP_ML_PER_MIN_FROM_PWM( absolutePWM );
 
-    // currently conversion can create negative values with values <= 10%.    *** Function used in dialyzer re-prime, so no Dialin login required ***
-    if ( targetRate < 0 )
+    // check for max of pump pwm for acceptance.            *** Function used in dialyzer re-prime, so no Dialin login required ***
+    if ( absolutePWM < MAX_DIAL_OUT_PUMP_PWM_DUTY_CYCLE )
     {
-        targetRate = 0;
+        setDialOutPumpTargetRate( (U32)targetRate, dir, PUMP_CONTROL_MODE_OPEN_LOOP );
+        result = TRUE;
     }
-    setDialOutPumpTargetRate( (U32)targetRate, dir, PUMP_CONTROL_MODE_OPEN_LOOP );
-    result = TRUE;
 
     return result;
 }