Index: firmware/App/Controllers/DialInFlow.c
===================================================================
diff -u -r706f67e47f41e06b30e95026af2e9854e0e801e2 -r0902a15ea36ad1cc1faa9ecc9422d557a0c680a4
--- firmware/App/Controllers/DialInFlow.c	(.../DialInFlow.c)	(revision 706f67e47f41e06b30e95026af2e9854e0e801e2)
+++ firmware/App/Controllers/DialInFlow.c	(.../DialInFlow.c)	(revision 0902a15ea36ad1cc1faa9ecc9422d557a0c680a4)
@@ -51,7 +51,8 @@
 
 #define MAX_DIAL_IN_PUMP_PWM_STEP_UP_CHANGE  0.01064F        ///< Max duty cycle change when ramping up.
 #define MAX_DIAL_IN_PUMP_PWM_STEP_DN_CHANGE  0.016F          ///< Max duty cycle change when ramping down.
-#define MAX_DIAL_IN_PUMP_PWM_DUTY_CYCLE      0.78F           ///< Max duty cycle is 78% to cap pump speed to 3,400 RPM to prevent rotor speed errors.
+#define MAX_DIAL_IN_PUMP_PWM_DUTY_CYCLE_SET  0.78F           ///< Max duty cycle is 78% to cap pump speed to 3,400 RPM to prevent rotor speed errors.
+#define MAX_DIAL_IN_PUMP_PWM_DUTY_CYCLE      0.90F           ///< Controller will error if PWM duty cycle > 90%, so set max to 90%.
 #define MIN_DIAL_IN_PUMP_PWM_DUTY_CYCLE      0.10F           ///< Controller will error if PWM duty cycle < 10%, so set min to 10%.
 #define MIN_DG_DIAL_FLOW_RATE                10.0F           ///< Minimum DG Dialysate Flow Rate (mL/Min)
 
@@ -275,7 +276,7 @@
     // Initialize dialysate inlet flow PI controller
     initializePIController( PI_CONTROLLER_ID_DIALYSATE_FLOW, MIN_DIAL_IN_PUMP_PWM_DUTY_CYCLE,
                             DIP_P_COEFFICIENT, DIP_I_COEFFICIENT,
-                            MIN_DIAL_IN_PUMP_PWM_DUTY_CYCLE, MAX_DIAL_IN_PUMP_PWM_DUTY_CYCLE );
+                            MIN_DIAL_IN_PUMP_PWM_DUTY_CYCLE, MAX_DIAL_IN_PUMP_PWM_DUTY_CYCLE_SET );
 
     // Initialize persistent alarms
     initPersistentAlarm( ALARM_ID_HD_DIAL_IN_FLOW_CHECK_FAILURE, 0, DIP_NO_FLOW_CHK_PERSIST );
@@ -323,7 +324,7 @@
                 dialInPumpControlMode = mode;
                 // Set PWM duty cycle target to an estimated initial target to ramp to based on target flow rate - then we will control to flow when ramp completed
                 dialInPumpPWMDutyCyclePct = ( 0 == flowRate ? DIP_PWM_ZERO_OFFSET : dialysateInPumpPWMFromTargetFlowRate( (F32)flowRate ) );
-                dialInPumpPWMDutyCyclePct = RANGE( dialInPumpPWMDutyCyclePct, MIN_DIAL_IN_PUMP_PWM_DUTY_CYCLE, MAX_DIAL_IN_PUMP_PWM_DUTY_CYCLE );
+                dialInPumpPWMDutyCyclePct = RANGE( dialInPumpPWMDutyCyclePct, MIN_DIAL_IN_PUMP_PWM_DUTY_CYCLE, MAX_DIAL_IN_PUMP_PWM_DUTY_CYCLE_SET );
 
                 switch ( dialInPumpState )
                 {