The Carel controller has a two-level menu system for programming the operation of the case. Level 1 program settings are the most frequently
accessed parameters. These items are used to make simple changes to the operation of the case. Level 2 program settings control more
complicated aspects of the case operation and, therefore, require the use of a password to gain access.
HOW TO CHANGE LEVEL 1 CONTROL SETTINGS
1. Press and hold the Program [Prg] button down for 5 seconds. “St” will be shown on the display.
2. Use the [Up] and [Down] arrows to move up or down the menu until you reach the parameter you intend to view or change. When the
proper code is displayed, press the [Set] button to view the current setting for that parameter.
3. Use the [Up] and [Down] arrows to change the value. Then press the [Set] button again to return to the menu.
4. The only exception to Step #3 is the real time clock, program code “tc”. In this case, you must press the [Set] button in order to access the
submenu of available settings for the “tc”parameter. Then press the [Up] and [Down] arrows to move up and down the submenu. Once
changes are made in this submenu, press the [Prg] button to get back to the main menu.
5. When finished making all necessary changes, you MUST press and hold the [Prg] button for 10 seconds to save them. Alternatively, if
you decide you do NOT want to save changes you’ve just made, simply stop pressing buttons for 30 seconds and the control will return to
normal operation, discarding any changes made.
HOW TO CHANGE LEVEL 2 CONTROL SETTINGS
6. Press and hold the [Prg] and [Set] buttons down for 5 seconds. The display will show a flashing “0”.
7. Use the [Up] arrow until the display reads “22” (this is the password), then press the [Set] button. The display will read “/P”.
8. Use the [Up] and [Down] arrows to move up or down the menu until you reach the parameter you intend to view or change. When the
proper code is displayed, press the [Set] button to view the current setting for that parameter. (You will notice the Level 1 program codes
are also found in this menu.)
9. Use the [Up] and [Down] arrows to change the value. Then press the [Set] button again to return to the menu.
10. The exceptions to Step #4 are the program codes “tc”, “td1”, and “td2”. In these cases, you must press the [Set] button in order to
access the submenu of available settings for these parameters. Once changes are made in this submenu, press the [Prg] button to get
back to the main menu.
11. When finished making all necessary changes, you MUST press and hold the [Prg] button for 10 seconds to save them. Alternatively, if
you decide you do NOT want to save changes you’ve just made, simply stop pressing buttons for 30 seconds and the control will return to
normal operation, discarding any changes made.
Note: Zero Zone should be contacted before working on changing settings. To be completed by a trained person only.
ZERO ZONE, INC. • 800-247-4496 • ZERO-ZONE.COM
© 2015 Zero Zone, Inc. All Rights Reserved. • MAR 2015
MN-06-B
CAREL CONTROLLER
Programming Instructions
