Index: firmware/App/Controllers/BloodFlow.c
===================================================================
diff -u -r794f0aea88a5a860448e54e99db6e2e881b22900 -r3533955f242cec0505e8826e0e2d96f7b79ad499
--- firmware/App/Controllers/BloodFlow.c	(.../BloodFlow.c)	(revision 794f0aea88a5a860448e54e99db6e2e881b22900)
+++ firmware/App/Controllers/BloodFlow.c	(.../BloodFlow.c)	(revision 3533955f242cec0505e8826e0e2d96f7b79ad499)
@@ -457,6 +457,7 @@
     U08 stpReadCtr = getFPGABloodFlowStatusPacketReadCounter();
     U08 flowErrorCtr = getFPGABloodFlowErrorCounter();
 
+#ifndef DISABLE_FPGA_COUNTER_CHECKS
     // Check for stale flow reading
     if ( TRUE == isPersistentAlarmTriggered( ALARM_ID_HD_BP_FLOW_READ_TIMEOUT_ERROR, ( fpReadCtr == lastBloodFlowFastPacketReadCtr ) ) )
     {
@@ -470,6 +471,7 @@
     {
         SET_ALARM_WITH_1_U32_DATA( ALARM_ID_HD_BP_FLOW_READ_TIMEOUT_ERROR, (U32)BLOOD_FLOW_READ_CTR_STATUS_PACKET )
     }
+#endif
 
     // Record flow read counters for next time around
     lastBloodFlowFastPacketReadCtr = fpReadCtr;
Index: firmware/App/Controllers/DialInFlow.c
===================================================================
diff -u -r33d652cfc884eeea0a422c39a15634fd74dc0ce3 -r3533955f242cec0505e8826e0e2d96f7b79ad499
--- firmware/App/Controllers/DialInFlow.c	(.../DialInFlow.c)	(revision 33d652cfc884eeea0a422c39a15634fd74dc0ce3)
+++ firmware/App/Controllers/DialInFlow.c	(.../DialInFlow.c)	(revision 3533955f242cec0505e8826e0e2d96f7b79ad499)
@@ -423,6 +423,7 @@
     U08 stpReadCtr = getFPGADialysateFlowStatusPacketReadCounter();
     U08 flowErrorCtr = getFPGADialysateFlowErrorCounter();
 
+#ifndef DISABLE_FPGA_COUNTER_CHECKS
     // Check for stale flow reading
     if ( TRUE == isPersistentAlarmTriggered( ALARM_ID_HD_DP_FLOW_READ_TIMEOUT_ERROR, ( fpReadCtr == lastDialysateFlowFastPacketReadCtr ) ) )
     {
@@ -436,6 +437,7 @@
     {
         SET_ALARM_WITH_1_U32_DATA( ALARM_ID_HD_DP_FLOW_READ_TIMEOUT_ERROR, (U32)DIALYSATE_FLOW_READ_CTR_STATUS_PACKET )
     }
+#endif
 
     // Record flow read counters for next time around
     lastDialysateFlowFastPacketReadCtr = fpReadCtr;
Index: firmware/App/Controllers/PresOccl.c
===================================================================
diff -u -r74a3506d935a18d4174f94d8c0fdbc750105904f -r3533955f242cec0505e8826e0e2d96f7b79ad499
--- firmware/App/Controllers/PresOccl.c	(.../PresOccl.c)	(revision 74a3506d935a18d4174f94d8c0fdbc750105904f)
+++ firmware/App/Controllers/PresOccl.c	(.../PresOccl.c)	(revision 3533955f242cec0505e8826e0e2d96f7b79ad499)
@@ -353,6 +353,7 @@
     U08 dpiErrorCtr = getFPGADialInPumpOcclusionErrorCounter();
     U08 dpoErrorCtr = getFPGADialOutPumpOcclusionErrorCounter();
 
+#ifndef DISABLE_FPGA_COUNTER_CHECKS
     // Check for sensor errors
     if ( bpErrorCtr > 0 )
     {
@@ -380,6 +381,7 @@
     {
         activateAlarmNoData( ALARM_ID_HD_DPO_OCCLUSION_READ_TIMEOUT_ERROR );
     }
+#endif
 
     // Record occlusion sensor readings
     bloodPumpOcclusion.data = (U32)getFPGABloodPumpOcclusion();
Index: firmware/App/HDCommon.h
===================================================================
diff -u -r993f1edc4fe8f10aa81cae4deddafc88c616ccf6 -r3533955f242cec0505e8826e0e2d96f7b79ad499
--- firmware/App/HDCommon.h	(.../HDCommon.h)	(revision 993f1edc4fe8f10aa81cae4deddafc88c616ccf6)
+++ firmware/App/HDCommon.h	(.../HDCommon.h)	(revision 3533955f242cec0505e8826e0e2d96f7b79ad499)
@@ -61,6 +61,8 @@
 //    #define READ_FPGA_ASYNC_DATA            1           // Test build reads non-priority register page every other time
 //    #define EMC_TEST_BUILD                  1           // EMC test build - HD/DG run separately but connected, HD pumps toggle on/off w/ stop button
     #define ALARMS_DEBUG                    1           // Triggered alarms sent to debug UART
+    #define ALARM_VOLUME_DEFAULT_LOW        1           // Set default alarm volume to lowest
+    #define TEMP_UI_ALARM_SILENCE_FIX       1           // Temporary UI fix for handling alarm silence request msg
     #define SKIP_PRIMING                    1           // Skip Pre-treatment Prime
     #define SKIP_WET_SELF_TESTS             1           // Skip Pre-treatment prime wet self-tests
 //    #define V1_5_SYSTEM                     1           // Build for v1.5 system
@@ -72,6 +74,7 @@
 //    #define DISABLE_BATT_COMM               1           // Disable battery communication.
     #define SKIP_AIR_BUBBLE_CHECK           1           // Skip air bubble detector self-test.
     #define DISABLE_OCCLUSION_SELF_TEST     1           // Skip occlusion sensor self-test.
+    #define DISABLE_FPGA_COUNTER_CHECKS     1           // Disable alarms associated with FPGA read/error counters
 
     #include <stdio.h>
     #include <strings.h>
Index: firmware/App/Services/AlarmMgmt.c
===================================================================
diff -u -r5fef605363d4f8023b3db2989b097b6c5f58db1a -r3533955f242cec0505e8826e0e2d96f7b79ad499
--- firmware/App/Services/AlarmMgmt.c	(.../AlarmMgmt.c)	(revision 5fef605363d4f8023b3db2989b097b6c5f58db1a)
+++ firmware/App/Services/AlarmMgmt.c	(.../AlarmMgmt.c)	(revision 3533955f242cec0505e8826e0e2d96f7b79ad499)
@@ -78,8 +78,12 @@
 static OVERRIDE_U32_T alarmStartedAt[ NUM_OF_ALARM_IDS ];
 /// Interval (in task intervals) at which to publish alarm information to CAN bus.
 static OVERRIDE_U32_T alarmInfoPublishInterval = { ALARM_INFO_PUB_INTERVAL, ALARM_INFO_PUB_INTERVAL, ALARM_INFO_PUB_INTERVAL, 0 };
+#ifndef ALARM_VOLUME_DEFAULT_LOW
 /// Set alarm audio volume attenuation level (0..4 - lower level = higher gain).
 static OVERRIDE_U32_T alarmAudioVolumeLevel = { MIN_ALARM_VOLUME_ATTENUATION, MIN_ALARM_VOLUME_ATTENUATION, MIN_ALARM_VOLUME_ATTENUATION, 0 };
+#else
+static OVERRIDE_U32_T alarmAudioVolumeLevel = { MAX_ALARM_VOLUME_ATTENUATION, MAX_ALARM_VOLUME_ATTENUATION, MAX_ALARM_VOLUME_ATTENUATION, 0 };
+#endif
 /// Alarm audio current (high gain) measured at ADC.
 static OVERRIDE_F32_T alarmPrimaryAudioCurrentHG = { 0.0, 0.0, 0.0, 0 };
 /// Alarm audio current (low gain) measured at ADC.
Index: firmware/App/Services/SystemCommMessages.c
===================================================================
diff -u -r5fef605363d4f8023b3db2989b097b6c5f58db1a -r3533955f242cec0505e8826e0e2d96f7b79ad499
--- firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 5fef605363d4f8023b3db2989b097b6c5f58db1a)
+++ firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 3533955f242cec0505e8826e0e2d96f7b79ad499)
@@ -2237,14 +2237,24 @@
  *************************************************************************/
 void handleUIAlarmSilenceRequest( MESSAGE_T *message )
 {
+#ifndef TEMP_UI_ALARM_SILENCE_FIX
     if ( message->hdr.payloadLen == sizeof( U32 ) )
+#else
+    if ( message->hdr.payloadLen == sizeof( U08 ) )
+#endif
     {
         U08 *payloadPtr = message->payload;
+#ifndef TEMP_UI_ALARM_SILENCE_FIX
         U32 cmd;
 
         memcpy( &cmd, payloadPtr, sizeof( U32 ) );
+        signalAlarmSilence( (ALARM_SILENCE_CMD_T)cmd );
+#else
+        U08 cmd;
 
+        memcpy( &cmd, payloadPtr, sizeof( U08 ) );
         signalAlarmSilence( (ALARM_SILENCE_CMD_T)cmd );
+#endif
     }
     else
     {