6
navigaTion using The basiC (remoTe) Display
Basic (Remote) Display User Interface
Most Guardian+ controllers ship with the Basic Display. The
display allows service technicians to change the major setpoints.
Setpoints can also be accessed using the Guardian+ Combo
Display or the controller’s web pages.
Controller Setup
Upon initially applying power to the controller, the controller
will initialize, then automatically enter Introduction Mode. The
Introduction Mode consists of four Types of Control options:
Ed - Electric Defrost with Mechanical TEV
EdE - Electric Defrost with Electric Expansion Valve
Ad - Air Defrost with Mechanical TEV
AdE - Air Defrost with Electric Expansion Valve
Step 1 - Using the and arrows, moves the user through
the available Types of Control options. Once the preferred
option is displayed press and hold the ENTER button for 3
seconds.
Note: For mechanical valve control, Ed and Ad options,
continue to Step 4. For Ede and AdE control options
continue to Steps 2, 3, &4.
Step 2 - Next, the controller prompts for the Expansion Valve
Type, and displays rS (RSV). If this is the correct selection,
press and hold the ENTER button for 3 seconds.
If not, use the or arrow to move to the correct valve.
With correct electric valve displayed, press and hold ENTER for
three seconds.
Note: Custom valve setup is not available from the Basic
Display.
Step 3 - The controller now prompts for Refrigerant Type
and displays 404 (R-404a) as the default. Change this value by
pressing the or arrow. Once you have the correct value,
press and hold ENTER for three seconds.
Step 4 - The fourth prompt is whether SMART ACCESS is
ENABLED or DISABLED. SMART ACCESS allows you to
easily view your controller online. Make your selection by using
the or arrow, and then press and hold ENTER for three
seconds. THESE ARE THE ONLY SETPOINTS REQUIRED
TO BEGIN CONTROLLING THE SYSTEM.
Additional Setpoints
For the majority of users, the Basic Display will provide the
necessary parameters to setup the controller.
From the default display, pressing the and arrows will cycle
through the Variables menu. The ENTER button will toggle
between the variable name and value.
Changing Setpoints
Pressing and holding the ENTER button will enter the Basic
Setpoints menu. Press ENTER button to toggle between set
point and value.
Pressing and holding the BACK button will enter the Advanced
Setpoints menu. Press ENTER button to toggle between
setpoint and value.
When the parameter value is displayed it may be changed by
using and arrows, and ENTER buttons. The and
arrows will increase or decrease numerical values, and will scroll
through the available options, on the non-numerical setpoints.
Press and hold the ENTER button for 3 seconds to save the
displayed value.
To abort changes, press BACK to return to the parameter
abbreviation.
Manual Valve Control
Press and hold the BACK button & arrow to put the EEV
in Manual Control mode. and arrows will control the valve
opening. ENTER will advance to the next digit, and BACK will
exit this mode.
Manual Defrost
Press and hold
ENTER
and to put the controller into Defrost
(next mode).
Diagnostics Mode
The Guardian+ has been programmed with a diagnostics mode.
When activated, the controller energizes each relay for 60
seconds. When the compressor relay is on the EEV will regulate
to the Superheat setpoint.
Display Firmware
Pressing and holding all 4 buttons ( BACK and ENTER )
will show the display’s rmware revision (dir – Display Revision)
Display Options
Simultaneously pressing and holding the and arrows will
show the address of the display (reserved for future versions).
Web Login
The User Name and Password are required when accessing the
controller using the web page.
The defaults are: User Name: ke2admin Password: ke2admin
IMPORTANT: For security purposes, the User Name and
Password should be changed from the default.
