diff --git a/src/ATBAPP/ATBDeviceControllerPlugin.cpp b/src/ATBAPP/ATBDeviceControllerPlugin.cpp
index 3e2e400..906d1ad 100644
--- a/src/ATBAPP/ATBDeviceControllerPlugin.cpp
+++ b/src/ATBAPP/ATBDeviceControllerPlugin.cpp
@@ -333,6 +333,9 @@ void ATBDeviceControllerPlugin::onServiceDoorOpened()
 {
     qCritical() << "ATBDeviceControllerPlugin::onServiceDoorOpened()";
 
+    // ... to detect alarm etc.
+    this->diag->diagRequest();
+
     // switch to mode service
     emit this->requestModeSERVICE();
 
@@ -347,6 +350,12 @@ void ATBDeviceControllerPlugin::onVaultDoorOpened()
     // - create an HealthEvent (-> ISMAS-Event)
     qCritical() << "ATBDeviceControllerPlugin::onVaultDoorOpened()";
 
+    // ... to detect alarm etc.
+    this->diag->diagRequest();
+
+    // this is started here because we want to keep ptu awake in order to get
+    // coin box removed / inserted etc.
+    // BackgroundTask("ACCOUNT") is finished, if account message is sent to ISMAS!
     this->dbus->startBackgroundTask("ACCOUNT");
 
     // do not: emit this->requestModeSERVICE();