Index: firmware/App/Controllers/DGInterface.c
===================================================================
diff -u -r579bc4f9f48d639777faa8354c921c3c9e60f80c -r6aa641a7bf0328a161789cc05c31ae630ff44e1a
--- firmware/App/Controllers/DGInterface.c	(.../DGInterface.c)	(revision 579bc4f9f48d639777faa8354c921c3c9e60f80c)
+++ firmware/App/Controllers/DGInterface.c	(.../DGInterface.c)	(revision 6aa641a7bf0328a161789cc05c31ae630ff44e1a)
@@ -96,8 +96,8 @@
 static BOOL dgOpModeDataFreshFlag = FALSE;                                  ///< Flag to signal the handleDGOpMode() to process fresh dg op mode data
 
 // Reservoir data
-static DG_RESERVOIR_ID_T dgActiveReservoir = DG_RESERVOIR_2;                ///< Latest active reservoir reported by the DG.
-static DG_RESERVOIR_ID_T dgActiveReservoirSet = DG_RESERVOIR_2;             ///< Active reservoir commanded.
+static DG_RESERVOIR_ID_T dgActiveReservoir;                                 ///< Latest active reservoir reported by the DG.
+static DG_RESERVOIR_ID_T dgActiveReservoirSet;                              ///< Active reservoir commanded.
 
 static DG_DISINFECT_UI_STATES_T disinfectsStatus;                           ///< DG disinfects status.
 static DG_MIXING_RATIOS_T dgMixingRatios;                                   ///< DG mixing ratios.
@@ -124,12 +124,13 @@
 {
     U32 i, j;
 
+    // NOTE: the active reservoir is set to reservoir 1 since DG will send active reservoir 1 as active on power up
     dgStarted                       = FALSE;
     dgTrimmerHeaterOn               = FALSE;
     dgTrimmerTempSet                = 0.0F;
     dgTrimmerTempCheckTimerCtr      = 0;
-    dgActiveReservoirSet            = DG_RESERVOIR_2;
-    dgActiveReservoir               = DG_RESERVOIR_2;
+    dgActiveReservoirSet            = DG_RESERVOIR_1;
+    dgActiveReservoir               = DG_RESERVOIR_1;
     dgDialysateTemp                 = 0.0F;
     dgCurrentOpMode                 = DG_MODE_INIT;
     dgSubMode                       = 0;