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GT20 Wire and Programming Manual
Rev 5-7-18
P/N C-00140
comes first), and then CLOSE.
d. If the Door Panel opens much wider than the (Ao) angle programmed within the GT20 Control, the angle can be
corrected by changing the dAxis Value. If the Door Panel continues to open at a much greater angle (Ao):
1. Ensure that the Swing Door was installed using the correct measurements.
2. Check the Swing Arm length, and the Swing Arm location on the Door Panel, and the Output Spindle location.
e. The screen will display the status of a successful completion of learn cycle:
Done!
E11
f. Upon completion of TEACH, the LCD screen will display the Home Page (Display will vary):
>##<
EO1
34. Go to the Program Selection Switch.
35. Ensure the area is clear from any persons or objects in path of moving Door Panel.
36. Select the Door Open Icon. The Door Panel will fully Open and then fully Close.
Note: Approximately every 24 hours, the GT20 Control will perform a UL required motor test. This test only happens during a
normal activation cycle that has been initiated by a user. Once a day, after the door has been activated, the door will fully
open then time out and begin to close normally. While the door is closing, about ½ way through the cycle, the control will
bring the door to an abrupt stop for about three seconds then it will continue to allow the door to close. As previously
stated this is a normal procedure required by UL and is completed once a day by the GT20.
SECTION 8 .3: Reset Back to Factory Default
1. From the Home Page, briefly push down on the Joystick. Move the Joystick to the Left until the REINIT Menu is displayed.
REINIT
2. Briefly push down on the Joystick. Move the Joystick to the Right or Left until the Element FACTOR is displayed.
FACTOR
Reset
3. Briefly push down on the Joystick. The Element Reset OK? will be displayed
Reset
ok?
4. Briefly push down on the Joystick to (OK) selection.
CHAPTER 9: PROGRAMMING
Table 5
The Four Levels of Menu Navigation
Level
Title
Description
1
Home Page
Displays the Door Panel state, the current Operating Mode, the Communication state for Astragal
Swing Doors and Interlock Swing Doors, and an Active Error (if an error exists).
2
Menu Selection
Displays all available Menus.
3
Element
Selection
Displays elements that can be selected within each Menu. Level 3 is password protected.
4
Changing Value
Displays values that can be changed within an Element. In most of cases, the Element is displayed on
the first line with the current Value on the second line (second line blinks).
