Display Use; Example Of Parameter Adjustment - Greenheck Microprocessor Controller Reference Manual

The microprocessor controller is located in the unit control center. The face of the controller has six buttons,
allowing the user to view unit conditions and alter parameters. The microprocessor controller is pre-programmed
with easy to use menus. A remote display is also available, which connects via the J10 port. A six wire patch cable
is needed.
Button Description Functions
Main Menu Press to go directly to the Main Menu from any screen.
From the Main Menu, navigate to the following screens:
• Unit Enable
• Unit Status
• Ctrl Variables
• Alarm Menu
Alarm The Alarm button flashes when there is an active alarm.
Press to view active alarms.
Press twice to go to the alarms reset screen.
Escape Press from the Main Menu to view the Unit Status screen.
Press to go back one menu level.
Press when editing a variable to cancel editing.
Up Press to navigate through the menus/screens.
Press after entering a variable to increase a current value.
Enter Press to enter a highlighted menu or screen item.
Press to enter a writable variable and press again to confirm the new variable value.
Down Press to navigate menus/screens.
Press after entering a variable to decrease the current value.
Virtual keypad/display on web interface only.
These two buttons on the virtual keypad/display are used to simulate two-button actions on the handheld
keypad/display.
To simulate pressing two buttons simultaneously:
1. Click on 2-Button Click.
2. Then, sequentially click on two keypad buttons (Main, Alarm, Escape, Up, Enter, Down).
To simulate pressing and holding two buttons simultaneously:
1. Click on 2-Button Hold.
2. Then, sequentially click on two keypad buttons (Main, Alarm, Escape, Up, Enter, Down).
Supply air low limit
Alarm when supply is
below: 35.0º F
Alarm delay: 300s
Supply air low limit
Alarm when supply is
below: 32.0º F
Alarm delay: 300s
Supply air low limit
Alarm when supply is
below: 32.0º F
Alarm delay: 300s
12 Microprocessor Controller for DOAS

Display Use

Keypad Description

Example of Parameter Adjustment

The cursor always begins in the upper left corner of the display and will be
blinking. Press the button to move the cursor down for parameter adjustment.
Once the cursor has reached the desired parameter, press the
adjust the value.
When satisfied with the adjustment, press the
When finished, make certain the cursor is in the upper left corner. If the cursor is
not in the upper left corner, the changes will not be saved. The cursor must be in
the upper left corner to enable screen advancement.
buttons to
button to save the parameter.
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