Index: firmware/App/Controllers/Pressures.h
===================================================================
diff -u -r6499ea25921fcf67826fa0c35bb03caf411ba542 -r6bf297b685487355fd581f221c59cf9d5a4fa53e
--- firmware/App/Controllers/Pressures.h	(.../Pressures.h)	(revision 6499ea25921fcf67826fa0c35bb03caf411ba542)
+++ firmware/App/Controllers/Pressures.h	(.../Pressures.h)	(revision 6bf297b685487355fd581f221c59cf9d5a4fa53e)
@@ -46,12 +46,13 @@
 /// Enumeration of pressure sensors monitored by this module.
 typedef enum PressureSensors
 {
-    PRESSURE_SENSOR_RO_PUMP_INLET = 0,          ///< RO pump pressure sensor
-    PRESSURE_SENSOR_RO_PUMP_OUTLET,             ///< RO pump pressure sensor
-    PRESSURE_SENSOR_DRAIN_PUMP_INLET,           ///< drain pump inlet pressure
-    PRESSURE_SENSOR_DRAIN_PUMP_OUTLET,          ///< drain pump outlet pressure
-    PRESSURE_SENSOR_BAROMETRIC,                 ///< Barometric pressure sensor
-    NUM_OF_PRESSURE_SENSORS                     ///< Number of pressure sensors
+    PRESSURE_FIRST = 0,                                 ///< First pressure to scan
+    PRESSURE_SENSOR_RO_PUMP_INLET = PRESSURE_FIRST,     ///< RO pump pressure sensor
+    PRESSURE_SENSOR_RO_PUMP_OUTLET,                     ///< RO pump pressure sensor
+    PRESSURE_SENSOR_DRAIN_PUMP_INLET,                   ///< drain pump inlet pressure
+    PRESSURE_SENSOR_DRAIN_PUMP_OUTLET,                  ///< drain pump outlet pressure
+    PRESSURE_SENSOR_BAROMETRIC,                         ///< Barometric pressure sensor
+    NUM_OF_PRESSURE_SENSORS                             ///< Number of pressure sensors
 } PRESSURE_SENSORS_T;
 
 // ********** public function prototypes **********