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14 YORK INTERNATIONAL
PROGRAMMING
THE MICROCOMPUTER CONTROL CENTER
FIG. 5 – KEYPAD – PROGRAMMING SYSTEM
SETPOINTS
PROGRAMMING SYSTEM SETPOINTS
The system setpoints can be entered at any time . . . . .
even when the system is running. Proceed as follows to
enter system setpoints. (Refer to Fig. 5.)
1. Press ACCESS CODE key.
2.
ENTER VALID ACCESS CODE _ _ _ _
is displayed.
3. Using ENTRY keys, enter 9 6 7 5.
4. As each digit is entered, the characters Y O R K are
displayed.
NOTE: If digits other than 9 6 7 5 are entered,
YORKis still displayed.
NOTE: For ease in remembering the code, note that
the letters YORKcorrespond to the dig-
its 9675on a telephone dial
.
5. Press ENTER key.
NOTE: If digits other than 9675 were entered in step
No. 4,
INVALID ACCESS CODE
is displayed
when the ENTER key is pressed. If this oc-
curs, enter the correct access code (9675)
and proceed.
6.
ACCESS TO PROGRAM KEY AUTHORIZED
is displayed.
NOTE: Unless terminated by pressing the ACCESS
CODE key again, the operator will have ac-
cess to the PROGRAM key for 10 minutes.
When 10 minutes have elapsed, access to
PROGRAM key will be automatically disabled
and the operator must return to step No. 1 to
gain access.
7. Press PROGRAM key.
8.
PROGRAM MODE, SELECT SETPOINT
is displayed.
9. Enter setpoints as detailed below. If you make a mis-
take when entering a value, press CANCEL key and
then ENTER key. The display will revert to the default
values and the cursor will return to the first change-
able digit. You can then proceed to enter the correct
values. If the entered value exceeds acceptable lim-
its,
OUT OF RANGE – TRY AGAIN!
message will be displayed for 2 seconds, then the
PROGRAM MODE, SELECT SETPOINT
message will re-
appear.
10.When all the desired setpoints have been entered,
press the ACCESS CODE key to exit PROGRAM
mode and terminate access to PROGRAM mode.
ACCESS TO PROGRAM MODE DISABLED
is displayed.
The Control Center will automatically return to LO-
CAL, REMOTE or SERVICE mode . . . . whichever
was last selected.
LD00954