Index: sources/drydemo/StateControllerStandby.cpp
===================================================================
diff -u -r3a1edf1c2dc6f68d32af3adeeee4a59bbac739c5 -r7094c1e2387d63fc7fb9d6d9a09ea0aee3c71420
--- sources/drydemo/StateControllerStandby.cpp	(.../StateControllerStandby.cpp)	(revision 3a1edf1c2dc6f68d32af3adeeee4a59bbac739c5)
+++ sources/drydemo/StateControllerStandby.cpp	(.../StateControllerStandby.cpp)	(revision 7094c1e2387d63fc7fb9d6d9a09ea0aee3c71420)
@@ -97,8 +97,9 @@
     _treatmentSubStates.rinsebackState          = RINSEBACK_STOP_INIT_STATE;
     _treatmentStatus.ufVolDeliveredL            = 0.0;
     _treatmentStatus.hasRecircBeenRequested     = false;
-    _treatmentStatus.lowVenousAlarmTimeoutCtr   = 0;
+    _treatmentStatus.triggerAlarmTimeoutCtr     = 0;
     _treatmentStatus.isBloodPumpRunning         = false;
+    _treatmentStatus.txPauseSeqAlarmState       = SEQ_ALARM_NO_ALARM;
     // Initialize pressure vars
     _pressureVars.presLimitState                = PRESSURE_LIMITS_STATE_OFF;
     _pressureVars.presStabilizeTimePeriod              = USE_NORMAL_STABILIZATION_PERIOD;
@@ -204,13 +205,73 @@
     }
 }
 
-void StateController::handleTriggerLowVenousAlarmInTx()
+void StateController::handleChemsReplacementAlarmsSequence(State_Status &status)
 {
-    _treatmentStatus.lowVenousAlarmTimeoutCtr++;
+    quint32 elapsedTimeMS;
 
-    if ((_treatmentStatus.lowVenousAlarmTimeoutCtr * QOBJECT_TIMER_TIMEOUT_MS) == TRIG_LOW_VEN_ALARM_TIMEOUT_MS)
-    {
-        triggerAnAlarm(ALARM_ID_TD_VENOUS_PRESSURE_LOW);
+    switch (_treatmentStatus.txPauseSeqAlarmState) {
+        case SEQ_ALARM_TRIGGER_RPLC_ACID:
+            if (_treatmentStatus.activeTopAlarm != ALARM_ID_NO_ALARM) { return; }
+            triggerAnAlarm(ALARM_ID_DD_REPLACE_ACID_CONCENTRATE);
+            _treatmentStatus.txPauseSeqAlarmState = SEQ_ALARM_TRIGGER_RPLC_BICARB;
+            break;
+
+        case SEQ_ALARM_TRIGGER_RPLC_BICARB:
+            if (_treatmentStatus.activeTopAlarm == ALARM_ID_DD_REPLACE_ACID_CONCENTRATE) { return; }
+            triggerAnAlarm(ALARM_ID_DD_BICARBONATE_CARTRIDGE_LOW_LEVEL);
+            _treatmentStatus.txPauseSeqAlarmState = SEQ_ALARM_PROCESS_DRAIN_SCREEN;
+            // Stay in treatment pause since there is a sequence of alarms to trigger next
+            status                                = STATE_ON_ACTION;
+            break;
+
+        case SEQ_ALARM_PROCESS_DRAIN_SCREEN:
+            // TODO wait for the drain screen message. IMPLEMENT
+            triggerAnAlarm(ALARM_ID_DD_REPLACE_BICARB_CARTRIDGE);
+            _treatmentStatus.txPauseSeqAlarmState = SEQ_ALARM_DRY_BICARB_CARTRIDGE;
+            // Stay in treatment pause since there is a sequence of alarms to trigger next
+            status                                = STATE_ON_ACTION;
+            break;
+
+        case SEQ_ALARM_DRY_BICARB_CARTRIDGE:
+            if (_treatmentStatus.activeTopAlarm == ALARM_ID_DD_REPLACE_BICARB_CARTRIDGE) { return; }
+            triggerAnAlarm(ALARM_ID_TD_DIALYSATE_PROPORTIONING_IN_PROGRESS);
+            _treatmentStatus.triggerAlarmTimeoutCtr = _elapsedTimeCtr;
+            _treatmentStatus.txPauseSeqAlarmState   = SEQ_ALARM_PROPORTIONING_IN_PROG;
+            // Stay in treatment pause since there is a sequence of alarms to trigger next
+            status                                  = STATE_ON_ACTION;
+            break;
+
+        case SEQ_ALARM_PROPORTIONING_IN_PROG:
+            // Wait for a couple of seconds to simulate like the conductivity is getting in range
+            elapsedTimeMS = (_elapsedTimeCtr - _treatmentStatus.triggerAlarmTimeoutCtr) * QOBJECT_TIMER_TIMEOUT_MS;
+            if (elapsedTimeMS == CLEAR_DIAL_PROPOR_TIMEOUT_MS) {
+                // This alarm is cleared automatically
+                triggerAnAlarm(ALARM_ID_NO_ALARM);
+                _treatmentStatus.triggerAlarmTimeoutCtr = _elapsedTimeCtr;
+                _treatmentStatus.txPauseSeqAlarmState   = SEQ_ALARM_LOW_VENOUS;
+                _treatmentSubStates.dialysisSubState    = DIALYSIS_UF_STATE;
+                _treatmentSubStates.txState             = TREAT_DIALYSIS_STATE;
+                _treatmentStatus.stateTransitionEvent   = "T_TP_2_Tx";
+                // Done with the acid/bicarb replacement alarms exit treatment pause
+                status                                  = STATE_ON_EXIT;
+            }
+            break;
+
+        case SEQ_ALARM_LOW_VENOUS:
+            elapsedTimeMS = (_elapsedTimeCtr - _treatmentStatus.triggerAlarmTimeoutCtr) * QOBJECT_TIMER_TIMEOUT_MS;
+            if (elapsedTimeMS == TRIG_LOW_VEN_ALARM_TIMEOUT_MS) {
+                triggerAnAlarm(ALARM_ID_TD_VENOUS_PRESSURE_LOW);
+                _treatmentStatus.triggerAlarmTimeoutCtr = _elapsedTimeCtr;
+                _treatmentStatus.txPauseSeqAlarmState   = SEQ_ALARM_NO_ALARM;
+                // Done with the sequence of acid/bicarb alarms. Trigger low venous and do not change the state because
+                // another method in treatment will transition to treatment pause. This alarm triggeres in treament, not treatment pause
+            }
+            break;
+
+        case SEQ_ALARM_NO_ALARM:
+        default:
+            // Do nothing
+            break;
     }
 }
 
@@ -227,7 +288,7 @@
                 QString activeState      = activeStates[0];
                 _treatmentStatus.stateTransitionEvent = (activeState == "Treatment_Recirculate" ? "T_RC_2_TE" : "T_RB_2_TE");
                 status                                = STATE_ON_EXIT;
-                qDebug() << "Event" << _treatmentStatus.stateTransitionEvent << _dryDemo.activeStateNames(true);
+                qDebug() << "Event" << _treatmentStatus.stateTransitionEvent << _dryDemo.activeStateNames(true); // TODO remove
             }
             handleSendUIConfirmationMessage(confirmID, cmd);
             _uiConfirmMessages.remove(confirmID);
@@ -264,10 +325,7 @@
     resp.append(confirmID);
     resp.append(confirmCmd);
     resp.append(rejectReason);
-    resp.append(0.0);
-    resp.append(0.0);
-    resp.append(0.0);
-    resp.append(0.0);
+    resp.append(0.0); resp.append(0.0); resp.append(0.0); resp.append(0.0);
     _isSendListReady = false;
     _sendMessages.append(resp);
     _isSendListReady = true;