‘Alert Irruption’ means the terminal can longer be used to accept transactions. Within the innards of the card device, sits an anti-tamper proof device, if the card terminal feels it is being tampered with or if the terminal suffers a hard impact, the anti-tamper proof device will trigger and shut the terminal down.
A terminal with this error will need to be replaced. To replace it's plug and play, and will initially load updates for 20 minutes or so
Re-initialize from the function screen to make sure it is connected to the terminal