Chapter 4: E2 Controller
8.Observe the indicator symbols in the Main screen to determine if the unit is operating in the required mode(s).
9.One to six hours may be required to see the desired temperature/humidity level in the conditioned space. Once room conditions have been programmed or set, a repeat visit to the conditioned site may be required to ensure the air conditioner is meeting the room's requirements.
Saving and Restoring Setpoint Parameters
Upon initial startup, the A/C system operates using the setpoints programmed by the factory (primary setpoints) as the operating setpoints. As described in Section 4.3.1, the user may enter new operating parameters in the Control menu anytime and the system will then operate accordingly. The user may store the new setpoints in the Service menu if it is intended to save them. Once stored, the user setpoints now become the operating setpoints. The primary setpoints entered by the factory still remain stored in the controller’s memory as the factory setpoints.
At any time, setpoints for the system may be
4.3.2 Alarms
As programmed into the system controller, an alarm condition activates the summary alarm logic, which illuminates the alarm key and energizes an audible alarm. Some alarms are programmed by the factory to automatically shut down the A/C unit until the alarm condition is remedied and the alarm is cleared by pressing the alarm key. Some of the alarms that may be enabled by the factory are listed in Section 4.5.3.
4.3.2.1 Summary Alarm
A summary alarm will activate when the controller senses any programmed alarm condition. This illuminates the alarm key and if the option is selected, a N.O./N.C. summary alarm contact may be energized for remote monitoring of alarm conditions. If certain critical summary alarm conditions are detected, they will cause the A/C unit to shut down.
4.3.2.2 Customer Alarms
A
4.3.2.3 Custom Alarms
A custom (user configured) alarm is activated upon detection of one or more programmed alarm conditions as set by the operator in the Service>Options>Custom menu loop (see Section 4.5.5.5). When a custom alarm condition is detected, a summary alarm is signaled and a designated set of N.O. & N.C. Custom Alarm relay contacts may be energized to provide remote indication of the specific alarm condition(s).
For example, you may want to be notified when a change filter alarm is annunciated, notifying that the air filters need to be cleaned or replaced. That way, you are alerted before the filters are so badly clogged that airflow is reduced to a point where a “Loss of airflow” alarm is activated.
4.4 Controller Operation
The E2 Series controller is designed to control an
The controller I/O module includes inputs and outputs as depicted in Figure
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