• Unlatched Alarm

If the alarm is unlatched the alarm relay will be left ON until the Temperature returns to below the setpoint, when the relay will be turned off. It is not presented in the Alarm Status window, as it relay is automatically cleared based on the lines value. An unlatched alarm shows as BLUE on the Lines reading on the Data Screen.

An unlatched alarm is a control alarm as it acts like a controller, automatically turning the relay on/off as the temperature moves around the setpoint.
A Low Alarm is a heating controller, as when the temp is below the setpoint, the relay is on, asking for heating to bring the temperature up.
A High Alarm is a cooling controller, as when the temp is above the setpoint, the relay is on, asking for cooling to bring the temperature down.