Index: firmware/App/Controllers/ConcentratePumps.c
===================================================================
diff -u -rb549cc9586c585902f891e1aac5e59b7de445f71 -r85339f0aa398217143fa3178a05ad5d6c6374bb8
--- firmware/App/Controllers/ConcentratePumps.c	(.../ConcentratePumps.c)	(revision b549cc9586c585902f891e1aac5e59b7de445f71)
+++ firmware/App/Controllers/ConcentratePumps.c	(.../ConcentratePumps.c)	(revision 85339f0aa398217143fa3178a05ad5d6c6374bb8)
@@ -225,7 +225,7 @@
         checkPersistentAlarm( ALARM_ID_DG_BICARB_CONCENTRATE_PUMP_PARK_FAULT, isBicarbPumpParked, isBicarbPumpParked, CONENTREATE_PUMP_PARK_FAULT_TIMEOUT_MS );
     }
 
-    checkPersistentAlarm(ALARM_ID_DG_CONCENTRATE_PUMP_FAULT, isConcPumpFault , fpgaConcPumpsFault, CONCENTRATE_PUMP_FAULT_PERSISTENCE_PERIOD );
+    checkPersistentAlarm( ALARM_ID_DG_CONCENTRATE_PUMP_FAULT, isConcPumpFault, fpgaConcPumpsFault, CONCENTRATE_PUMP_FAULT_PERSISTENCE_PERIOD );
 
     if ( ++concentratePumpMonitorTimerCounter >= getU32OverrideValue( &concentratePumpDataPublishInterval ) )
     {
Index: firmware/App/Controllers/Heaters.c
===================================================================
diff -u -r4c92e7dd693425816a40a80f64aeb777384f639d -r85339f0aa398217143fa3178a05ad5d6c6374bb8
--- firmware/App/Controllers/Heaters.c	(.../Heaters.c)	(revision 4c92e7dd693425816a40a80f64aeb777384f639d)
+++ firmware/App/Controllers/Heaters.c	(.../Heaters.c)	(revision 85339f0aa398217143fa3178a05ad5d6c6374bb8)
@@ -145,9 +145,9 @@
         heatersStatus[ heater ].state                  = HEATER_EXEC_STATE_OFF;
         heatersStatus[ heater ].startHeaterSignal      = FALSE;
         heatersStatus[ heater ].isHeaterOn             = FALSE;
-        heatersStatus[ heater ].dutyCycle.data         = 0.0F;
-        heatersStatus[ heater ].dutyCycle.ovData       = 0.0F;
-        heatersStatus[ heater ].dutyCycle.ovInitData   = 0.0F;
+        heatersStatus[ heater ].dutyCycle.data         = HEATERS_MIN_DUTY_CYCLE;
+        heatersStatus[ heater ].dutyCycle.ovData       = HEATERS_MIN_DUTY_CYCLE;
+        heatersStatus[ heater ].dutyCycle.ovInitData   = HEATERS_MIN_DUTY_CYCLE;
         heatersStatus[ heater ].dutyCycle.override     = 0;
         heatersStatus[ heater ].targetFlow             = 0.0F;
         heatersStatus[ heater ].hasTargetTempChanged   = FALSE;
Index: firmware/App/Modes/ModeHeatDisinfect.c
===================================================================
diff -u -rac264e13479986e5db728ce6ba3c08cb1a871266 -r85339f0aa398217143fa3178a05ad5d6c6374bb8
--- firmware/App/Modes/ModeHeatDisinfect.c	(.../ModeHeatDisinfect.c)	(revision ac264e13479986e5db728ce6ba3c08cb1a871266)
+++ firmware/App/Modes/ModeHeatDisinfect.c	(.../ModeHeatDisinfect.c)	(revision 85339f0aa398217143fa3178a05ad5d6c6374bb8)
@@ -1823,7 +1823,7 @@
     if ( ALARM_ID_NO_ALARM == alarmDetectedPendingTrigger )
     {
 #ifndef _RELEASE_
-        if ( nelsonSupport != NELSON_INOCULATE )
+        if ( ( nelsonSupport != NELSON_INOCULATE ) && ( nelsonSupport != NELSON_POS_CONTROL_HEAT_DISINFECT ) )
 #endif
         {
             if ( TDiTempC >= HEAT_DISINFECT_TRIMMER_HEATER_STOP_TEMP_C )
Index: firmware/App/Services/SystemCommMessages.c
===================================================================
diff -u -r686acb428a08c632526ca35c8a0102ab22836bd0 -r85339f0aa398217143fa3178a05ad5d6c6374bb8
--- firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 686acb428a08c632526ca35c8a0102ab22836bd0)
+++ firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 85339f0aa398217143fa3178a05ad5d6c6374bb8)
@@ -502,7 +502,7 @@
     }
 
     // serialize the message (w/ sync, CRC, and appropriate CAN padding) and add serialized message data to appropriate comm buffer
-    serializeMessage( msg, COMM_BUFFER_OUT_CAN_DG_BROADCAST, ACK_NOT_REQUIRED );
+    serializeMessage( msg, COMM_BUFFER_OUT_CAN_DG_BROADCAST, ACK_REQUIRED );
 }
 
 /*********************************************************************//**