Index: firmware/App/Controllers/DialInFlow.c
===================================================================
diff -u -ra56db4650fe5652d633e0c51b29da32d5d708608 -r187df13234966f412631385a0bb7e76d1d3b69aa
--- firmware/App/Controllers/DialInFlow.c	(.../DialInFlow.c)	(revision a56db4650fe5652d633e0c51b29da32d5d708608)
+++ firmware/App/Controllers/DialInFlow.c	(.../DialInFlow.c)	(revision 187df13234966f412631385a0bb7e76d1d3b69aa)
@@ -166,10 +166,10 @@
 #define DIR_DI_PUMP_SPI5_PORT_MASK       0x00000100     ///< Pin on unused SPI5 peripheral (ENA) - re-purposed as output GPIO to set dialysate inlet pump direction.
 #define DIP_ROTOR_HALL_SENSOR_NHET_ID    0x0000001E     ///< NHET pin number associated with DPi rotor hall sensor input
 // DialIn pump stop and direction macros
-#define SET_DIP_DIR()                    {mibspiREG5->PC3 |= DIR_DI_PUMP_SPI5_PORT_MASK;}       ///< Macro for setting the dialysate inlet pump direction pin high.
-#define CLR_DIP_DIR()                    {mibspiREG5->PC3 &= ~DIR_DI_PUMP_SPI5_PORT_MASK;}      ///< Macro for setting the dialysate inlet pump direction pin low.
-#define SET_DIP_STOP()                   gioSetBit( gioPORTA, STOP_DI_PUMP_GIO_PORT_PIN, PIN_SIGNAL_LOW )   ///< Macro for setting the dialysate inlet pump stop pin low.
-#define CLR_DIP_STOP()                   gioSetBit( gioPORTA, STOP_DI_PUMP_GIO_PORT_PIN, PIN_SIGNAL_HIGH )  ///< Macro for setting the dialysate inlet pump stop pin high.
+#define SET_DIP_DIR()                    {mibspiREG5->PC3 |= DIR_DI_PUMP_SPI5_PORT_MASK;}       ///< Macro for setting the dialysate inlet pump direction pin high (forward).
+#define CLR_DIP_DIR()                    {mibspiREG5->PC3 &= ~DIR_DI_PUMP_SPI5_PORT_MASK;}      ///< Macro for setting the dialysate inlet pump direction pin low (reverse).
+#define SET_DIP_STOP()                   gioSetBit( gioPORTA, STOP_DI_PUMP_GIO_PORT_PIN, PIN_SIGNAL_LOW )   ///< Macro for setting the dialysate inlet pump disable pin low (disable).
+#define CLR_DIP_STOP()                   gioSetBit( gioPORTA, STOP_DI_PUMP_GIO_PORT_PIN, PIN_SIGNAL_HIGH )  ///< Macro for setting the dialysate inlet pump disable pin high (enable).
 
 // ********** private data **********