Index: firmware/App/Controllers/DGInterface.c
===================================================================
diff -u -r3635df042e6e3a86cc6b161290637f899fbaa6c2 -r526e890e4e35fac0a622af538bf611ea15a30609
--- firmware/App/Controllers/DGInterface.c	(.../DGInterface.c)	(revision 3635df042e6e3a86cc6b161290637f899fbaa6c2)
+++ firmware/App/Controllers/DGInterface.c	(.../DGInterface.c)	(revision 526e890e4e35fac0a622af538bf611ea15a30609)
@@ -8,7 +8,7 @@
 * @file    DGInterface.c
 *
 * @author  (last)      Dara Navaei
-* @date    (last)      12-Jun-2023
+* @date    (last)      10-Aug-2023
 *
 * @author  (original)  Sean
 * @date    (original)  08-Apr-2020
@@ -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 U32 dgReservoirFillVolumeTarget = 0;                                 ///< Latest fill-to volume reported by the DG.
 static U32 dgReservoirFillVolumeTargetSet = 0;                              ///< Fill-to volume commanded.
@@ -129,12 +129,13 @@
 {
     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;
     dgReservoirFillVolumeTargetSet  = 0;
     dgReservoirDrainVolumeTargetSet = 0;
     dgDialysateTemp                 = 0.0F;