Index: firmware/App/Controllers/ConcentratePumps.c
===================================================================
diff -u -rac305d5eedc7fb0e85adef5cd4aa34e58e94e3b8 -rfab0257d4913c021698418277e742c2a61e0368e
--- firmware/App/Controllers/ConcentratePumps.c	(.../ConcentratePumps.c)	(revision ac305d5eedc7fb0e85adef5cd4aa34e58e94e3b8)
+++ firmware/App/Controllers/ConcentratePumps.c	(.../ConcentratePumps.c)	(revision fab0257d4913c021698418277e742c2a61e0368e)
@@ -40,7 +40,7 @@
 #define CONCENTRATE_PUMP_SPEED_INCREMENT                    2.0F                                                ///< Speed increase (mL/min) when controlling concentrate pump to target step speed.
 #define CONCENTRATE_PUMP_MIN_SPEED                          3.0F                                                ///< Minimum speed for concentrate pump in mL per min.
 #define CONCENTRATE_PUMP_SPD_OUT_OF_RANGE_TOL_WHEN_ON_PCT   0.02F                                               ///< Concentrate pump speed out of range tolerance when on in percentage.
-#define CONCENTRATE_PUMP_SPD_OUT_OF_RANGE_TOL_WHEN_OFF_MLPM 1.0F                                                ///< Concentrate pump speed out of range tolerance when off in mL/min.
+#define CONCENTRATE_PUMP_SPD_OUT_OF_RANGE_TOL_WHEN_SLOW_MLPM 1.0F                                               ///< Concentrate pump speed out of range tolerance when slow in mL/min.
 #define CONCENTRATE_PUMP_LOW_SPEED_THRESHOLD_MLPM           10.0F                                               ///< Concentrate pump low speed threshold in mL/min.
 #define CONCENTRATE_PUMP_ZERO_FLOW_RATE                     0xFFFF                                              ///< Pulse width value when zero flow rate or pump is off.
 
@@ -858,7 +858,7 @@
     F32 cpTargetSpeed = concentratePumps[ pumpId ].currentPumpSpeed;
     F32 cpError       = fabs( getMeasuredPumpSpeed( pumpId ) - cpTargetSpeed );
     BOOL isCpSpeedOut = FALSE;
-    F32 tolerance     = CONCENTRATE_PUMP_SPD_OUT_OF_RANGE_TOL_WHEN_OFF_MLPM;
+    F32 tolerance     = CONCENTRATE_PUMP_SPD_OUT_OF_RANGE_TOL_WHEN_SLOW_MLPM;
 
     if ( ( cpTargetSpeed > NEARLY_ZERO ) && ( cpTargetSpeed > CONCENTRATE_PUMP_LOW_SPEED_THRESHOLD_MLPM ) )
     {