Index: firmware/App/Drivers/TemperatureSensor.h
===================================================================
diff -u -r8d272582cbd2cb5fc0c6af0fead2867ce02658b0 -r41c4d109b7bc172d93ae1f4e4b20acaf96547807
--- firmware/App/Drivers/TemperatureSensor.h	(.../TemperatureSensor.h)	(revision 8d272582cbd2cb5fc0c6af0fead2867ce02658b0)
+++ firmware/App/Drivers/TemperatureSensor.h	(.../TemperatureSensor.h)	(revision 41c4d109b7bc172d93ae1f4e4b20acaf96547807)
@@ -35,12 +35,10 @@
 /// Enumeration of temperature sensors.
 typedef enum TemperatureSensors
 {
-    P23_TEMP = 0,                                               ///< Tank temperature sensor at hottest point.
-    TEMP_SENSOR_FIRST = P23_TEMP,                               ///< First temp sensor.
-    P22_TEMP,                                                   ///< Pre-tank temperature sensor at coldest point.
-    P10_TEMP,                                                   ///< Inlet conductivity sensor temperature.
+
+    P10_TEMP = 0,                                               ///< Inlet conductivity sensor temperature.
+    TEMP_SENSOR_FIRST = P10_TEMP,                               ///< First temp sensor.
     P19_TEMP,                                                   ///< Outlet conductivity sensor temperature.
-    M4_TEMP,
     NUM_OF_TEMPERATURE_SENSORS                                  ///< Number of temperature sensors
 } TEMPERATURE_SENSOR_T;