Index: firmware/App/Controllers/DialInFlow.c
===================================================================
diff -u -r0902a15ea36ad1cc1faa9ecc9422d557a0c680a4 -r1b6b84d8a24a19984ec4a2d89db017e7247ad46c
--- firmware/App/Controllers/DialInFlow.c	(.../DialInFlow.c)	(revision 0902a15ea36ad1cc1faa9ecc9422d557a0c680a4)
+++ firmware/App/Controllers/DialInFlow.c	(.../DialInFlow.c)	(revision 1b6b84d8a24a19984ec4a2d89db017e7247ad46c)
@@ -51,7 +51,7 @@
 
 #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_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_SET  0.82F           ///< Max duty cycle is 82% to cap pump speed to 3,600 RPM during treatment.
 #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)
@@ -76,6 +76,7 @@
 #define DIP_MAX_ROTOR_VS_MOTOR_DIFF_RPM      5.0F            ///< Maximum difference in speed between motor and rotor (in rotor RPM).
 #define DIP_MAX_MOTOR_SPEED_ERROR_RPM        300.0F          ///< Maximum difference in speed between measured and commanded RPM.
 #define DIP_MAX_MOTOR_SPEED_VS_TRGT_DIFF_PCT 0.15F           ///< Maximum motor speed vs target difference in percent.
+#define DIP_MIN_ROTOR_SPEED_VS_MOTOR_PCT    -0.6F            ///< Minimum rotor speed vs target difference in percent.
 
 /// Persist time (ms) for unexpected flow check failure condition.
 static const U32 DIP_NO_FLOW_CHK_PERSIST       = (10 * MS_PER_SECOND);
@@ -1351,8 +1352,8 @@
         F32 deltaMCMotorSpeed = fabs( measMCMotorSpeed - cmdMotorSpeed );
         F32 measRotorSpeed = fabs( getMeasuredDialInPumpRotorSpeed() );
         F32 measMotorSpeedInRotorRPM = fabs( measMotorSpeed / DIP_GEAR_RATIO );
-        F32 deltaRotorSpeed = fabs( measRotorSpeed - measMotorSpeedInRotorRPM );
-        F32 measMotorSpeedDeltaPct = fabs( deltaRotorSpeed / measMotorSpeedInRotorRPM );
+        F32 deltaRotorSpeed = ( measRotorSpeed - measMotorSpeedInRotorRPM );
+        F32 measMotorSpeedDeltaPct = ( deltaRotorSpeed / measMotorSpeedInRotorRPM );
 
         // Check measured motor speed vs. commanded motor speed while controlling to target
         if ( ( deltaMotorSpeed > DIP_MAX_MOTOR_SPEED_ERROR_RPM ) || ( deltaMCMotorSpeed > DIP_MAX_MOTOR_SPEED_ERROR_RPM ) )
@@ -1373,7 +1374,8 @@
         }
 
         // Check measured rotor speed vs. measured motor speed while controlling to target
-        if ( ( deltaRotorSpeed > DIP_MAX_ROTOR_VS_MOTOR_DIFF_RPM ) && ( measMotorSpeedDeltaPct > DIP_MAX_MOTOR_SPEED_VS_TRGT_DIFF_PCT ) )
+        if ( ( ( deltaRotorSpeed > DIP_MAX_ROTOR_VS_MOTOR_DIFF_RPM ) && ( measMotorSpeedDeltaPct > DIP_MAX_MOTOR_SPEED_VS_TRGT_DIFF_PCT ) ) ||
+             ( measMotorSpeedDeltaPct < DIP_MIN_ROTOR_SPEED_VS_MOTOR_PCT ) )
         {
             if ( ++errorDialInRotorSpeedPersistTimerCtr >= ( getPumpRotorErrorPersistTime( measMotorSpeed, DIP_GEAR_RATIO ) / TASK_PRIORITY_INTERVAL ) )
             {