Data Manipulation Keys - Trane S*HF*20-75 Troubleshooting Manual

Commonly Used Acronyms
Setpoints Key
Pressing the Setpoints key will cause the LCD screen to display the first of the setpoint screens where the operator will
designate default temperature and pressure setpoints. While scrolling through the setpoint screens, pressing this key
again will cause the LCD to display the first setpoint screen.
Diagnostics Key
Pressing the Diagnostics key at any time will allow the operator to view any active unit diagnostics, or 20 of the most
recently logged unit diagnostics. The LCD screen will display one of the diagnostic screens (depending on which
diagnostic, if any, is present). If no key is pressed for 30 minutes while the screen is displaying diagnostic information,
it will revert back to the operating status display.
Configuration Key
Pressing the Configuration key will cause the LCD screen to display the first of the configuration screens where the
operator will designate unit configuration data such as unit type, capacity, system control, etc.
This information was programmed at the factory. Pressing the configuration key at any level in the configuration menu
will display the first configuration screen.
Note:
1. This key should be used if the unit's configuration data is lost or new options are added in the field, and to view current
configuration.
2. The Stop key must be pressed prior to making any changes under the Configuration menu.
Setup Key
Pressing the Setup key will cause the LCD screen to display screens where the operator will designate various operating
parameters such as temperature and pressure ranges, limits, percentages, setpoint source selections, and sensor input
definitions for the control of the rooftop unit's various operating modes. Pressing the Setup key at any level in the setup
menu will display the first setup screen.
Service Mode Key
Pressing the Service Mode key causes the LCD to display the first of the service test mode screens showing various unit
components which may be turned on or off for the particular test being performed. Once the status of these components
is designated, the LCD will display screens that allow the operator to designate the TEST START time delay for each test.

Data Manipulation Keys

The six data manipulation keys illustrated in Figure 2. Human Interface Keypad" on page 14, (Enter, Cancel, + (Plus), -
(Minus), Previous, and Next are used to modify the data within the screens (change values, move the cursor, confirm
choices)
Enter Key
The Enter key will confirm the new values that were designated by pressing the + (Plus) or - (Minus) keys at all edit points.
When viewing status and diagnostics screens, it has no function.
Cancel Key
After changing data, at an editable screen, but before confirming it with the Enter key, pressing the Cancel key will return
the data to its previous value. This key shall also function to clear active diagnostics.
+ (Plus) Key
When viewing a setpoint screen, this key will increase the value of the displayed item per the units selected. When working
with a status menu, it will add the current status display to the CUSTOM MENU. When viewing setup, or service test
screens, it will proceed forward though all the selections of that menu item, increase setpoints, toggle choices OFF to ON,
DISABLED to ENABLED.
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