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Keyboard Descriptions - Single Button
Keyboard Descriptions - Combined Buttons
Controller Display Upon Start-up
Set
Display target set point; In programming mode, select a parameter or confirm an operation.
Start
Reset
Hold for 5 seconds to reset any lockouts if the current state of the controller allows for it to be
reset.
Up
Enter the fast access menu; In programming mode, browse the parameter codes or increases
the displayed value.
Down
In programming mode it browses the parameter codes or decreases the displayed value.
Service
Enter the service and alarm menu.
Defrost
Hold for 3 seconds to start a manual defrost or terminate an active defrost.
(Not available at the moment).
Step
Action
Phenomenon and Description
1
Power on controller
All LEDs will light up for 3 seconds.
2
Firmware version will be displayed for 3 seconds.
3
Parameter setting file (bin file) identifier will be displayed for 3 seconds.
4
Normal display (actual suction temperature will be displayed on ZXD unit, condensing
temperature will be displayed on ZX/ZXL unit)
+
Press and hold for about 3 seconds to lock (Pon) or unlock (PoF) the keyboard.
+
Pressed together to exit programming mode or menu; under rtC and Par, this combination allows the user to go
back to previous level.
+
Pressed together for 3 seconds allows access to first level of programming mode.
+
Pressed together for 3 seconds allows access to EXV manual setting.
