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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, con-
tinue 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 press-
ing 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 EN-
ABLED 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 CONTROL-
LING THE SYSTEM.
Additional Setpoints
For the majority of users, the Basic Display will provide the neces-
sary parameters to setup the controller.
From the default display, pressing the and arrows will cycle
through the Variables menu. The ENTER button will toggle be-
tween the variable name and value.
Changing Setpoints
Pressing and holding the ENTER button will enter the Basic Set-
points 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 dis-
played value.
To abort changes, press BACK to return to the parameter abbrevi-
ation.
Manual Valve Control
Press and hold the BACK button & arrow to put the EEV in
Manual Control mode. and arrows will control the valve open-
ing. 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 Pass-
word should be changed from the default.
