Boss AX1-2.5E, Operation & Maintenance Manual

Page: 15 / 44

15
Controller Overview
The following image shows the front of the pressurisation unit digital controller. 4 buttons are
provided for programming, and an LED display which shows scrolling messages.
When the controller is first powered up, it will display the controller version number.
This manual relates to controller version 6.3. If the controller is of a different version,
there may be differences in the menu items available.
Old Controller Design
On older models, the design of the digital controller is visualy different. The internal
components are identical and the button functions remain the same.
The old controller design is shown below:
When in normal operation, the controller will display the current system pressure. If a fault occurs,
the controller will display a fault code and produce an audible alarm.
In normal operation, the functions of the buttons are as follows:
Button
Function
Press Hold
SET - Show Current System Pressure
MUTE Mute Audible Alarm Reset Unit
+ - Enter Programming Menu
- - -