Index: firmware/App/HDCommon.h
===================================================================
diff -u -r84bf47b446d76710c31dea1d93f8aec37ee0afff -r98d0913bc0286d1f756ac49f205f5431104fa560
--- firmware/App/HDCommon.h	(.../HDCommon.h)	(revision 84bf47b446d76710c31dea1d93f8aec37ee0afff)
+++ firmware/App/HDCommon.h	(.../HDCommon.h)	(revision 98d0913bc0286d1f756ac49f205f5431104fa560)
@@ -49,7 +49,7 @@
 //    #define RUN_BP_OPEN_LOOP                1           // Run blood pump in open loop mode
 //    #define RUN_DPI_OPEN_LOOP               1           // Run dialysate inlet pump in open loop mode
     #define WORN_OUT_CARTRIDGE              1           // Running with an old worn out cartridge (max wear)
-    #define PBA_ESTIMATION                  1           // Estimate arterial pressure rather than look at PBA sensor
+//    #define PBA_ESTIMATION                  1           // Estimate arterial pressure rather than look at PBA sensor
     #define DISABLE_MOTOR_CURRENT_CHECKS    1           // Do not error on HD pump current checks
     #define DISABLE_PUMP_FLOW_CHECKS        1           // Do not error on HD pump flow checks
     #define DISABLE_PUMP_SPEED_CHECKS       1           // Do not error on HD pump speed checks
@@ -59,7 +59,7 @@
     #define DISABLE_PRESSURE_CHECKS         1           // Do not error on HD pressure checks
     #define DISABLE_ARTERIAL_PRESSURE_CHECK 1           // Do not error on arterial pressure out of range
     #define DISABLE_VENOUS_PRESSURE_CHECK   1           // Do not error on venous pressure out of range
-//    #define USE_PBO_AS_PBA                  1           // PBo readings used for PBA, PBo replaced with fixed pressure (100 mmHg)
+    #define USE_PBO_AS_PBA                  1           // PBo readings used for PBA, PBo replaced with fixed pressure (100 mmHg)
 
 //    #define DISABLE_UF_ALARMS               1           // Do not error on HD ultrafiltration checks
     #define DISABLE_DIALYSATE_TEMP_CHECK    1           // Disable dialysate temperature check