Index: firmware/App/Controllers/DialInFlow.c
===================================================================
diff -u -rd3e3b8113dfb4f7cb77aed5e8e7b08ba3efb4c50 -r90be43508ea3f0f7d7bf9be4f047b3db4dda34b1
--- firmware/App/Controllers/DialInFlow.c	(.../DialInFlow.c)	(revision d3e3b8113dfb4f7cb77aed5e8e7b08ba3efb4c50)
+++ firmware/App/Controllers/DialInFlow.c	(.../DialInFlow.c)	(revision 90be43508ea3f0f7d7bf9be4f047b3db4dda34b1)
@@ -49,6 +49,7 @@
 #define MAX_DIAL_IN_PUMP_PWM_STEP_DN_CHANGE  0.02F           ///< Max duty cycle change when ramping down ~ 300 mL/min/s.
 #define MAX_DIAL_IN_PUMP_PWM_DUTY_CYCLE      0.89F           ///< Controller will error if PWM duty cycle > 90%, so set max to 89%.
 #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) - DN-9NOV2022
 
 #define DIP_CONTROL_INTERVAL_SEC             4               ///< Dialysate inlet pump control interval (in seconds).
 /// Interval (ms/task time) at which the dialIn pump is controlled.
@@ -1349,8 +1350,6 @@
 static void checkDialInPumpFlowRate( void )
 {
     F32 flow = getMeasuredDialInFlowRate();
-    F32 estimatedFlow = flow;
-    F32 deltaFlow;
     F32 measuredDialInFlow;
 
     // Range check on measure DPi flow rate.
@@ -1394,14 +1393,13 @@
         errorDialInFlowVsMotorSpeedPersistTimerCtr = 0;
     }
 
-    // Check the measured flow against estimated flow
+    // Check DG Dialysate flow rate
     measuredDialInFlow = getDGDialysateFlowRateLMin() * ML_PER_LITER;
-    deltaFlow = FIFTY_PERCENT * estimatedFlow;
     if ( ( TRUE == isDialInPumpRunning() ) && ( dialInPumpControlMode != PUMP_CONTROL_MODE_OPEN_LOOP ) )
     {
-        if ( ( TRUE == isPersistentAlarmTriggered( ALARM_ID_HD_DIAL_IN_FLOW_CHECK_FAILURE, deltaFlow < fabs( estimatedFlow - measuredDialInFlow ) ) ) )
+        if ( ( TRUE == isPersistentAlarmTriggered( ALARM_ID_HD_DIAL_IN_FLOW_CHECK_FAILURE, measuredDialInFlow <  MIN_DG_DIAL_FLOW_RATE ) ) )
         {
-            SET_ALARM_WITH_2_F32_DATA( ALARM_ID_HD_DIAL_IN_FLOW_CHECK_FAILURE, measuredDialInFlow, estimatedFlow );
+            SET_ALARM_WITH_2_F32_DATA( ALARM_ID_HD_DIAL_IN_FLOW_CHECK_FAILURE, measuredDialInFlow, (F32)targetDialInFlowRate );
         }
     }
     else