Index: firmware/App/Controllers/DialInFlow.c
===================================================================
diff -u -r8d44b80febc4574ce8f9adf91d04a6056c9de42e -r6d19d844800eaaa05d03561c7f6e2d882de2c1ff
--- firmware/App/Controllers/DialInFlow.c	(.../DialInFlow.c)	(revision 8d44b80febc4574ce8f9adf91d04a6056c9de42e)
+++ firmware/App/Controllers/DialInFlow.c	(.../DialInFlow.c)	(revision 6d19d844800eaaa05d03561c7f6e2d882de2c1ff)
@@ -47,6 +47,8 @@
 /// Interval (ms/task time) at which the dialIn flow data is published on the CAN bus.
 #define DIAL_IN_FLOW_DATA_PUB_INTERVAL       ( MS_PER_SECOND / TASK_PRIORITY_INTERVAL )
 
+#define MAX_SETTABLE_DIAL_IN_FLOW_RATE       700             ///< Maximum settable dialysate inlet flow rate (in mL/min).
+
 #define MAX_DIAL_IN_PUMP_PWM_STEP_UP_CHANGE  0.0133F         ///< Max duty cycle change when ramping up ~ 200 mL/min/s.
 #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      0.90F           ///< Controller will error if PWM duty cycle > 90%, so set max to 90%.
@@ -303,7 +305,7 @@
         // Don't interrupt pump control unless rate or mode is changing
         if ( ( dirFlowRate != targetDialInFlowRate ) || ( mode != dialInPumpControlMode ) )
         {
-            BOOL isFlowRateInRange = ( flowRate <= MAX_DIAL_IN_FLOW_RATE ? TRUE : FALSE );
+            BOOL isFlowRateInRange = ( flowRate <= MAX_SETTABLE_DIAL_IN_FLOW_RATE ? TRUE : FALSE );
 
 #ifndef _RELEASE_
             if ( SW_CONFIG_ENABLE_VALUE == getSoftwareConfigStatus( SW_CONFIG_DISABLE_PUMPS_FLOW_LIMITS ) )