York YCAV0157 Installation Operation & Maintenance page 270

MICRO PANEL
SERIAL NUMBER PROGRAMMING (CON'T)
At this point, the letters entered for the YYYY inputs
should now appear in the top line of the display and
should match the first 4 characters of the serial number
on the unit Data Plate. The next three digits of the serial
number should now be keyed in. Press the
key to store the input. Press the
key to scroll to positions 8-10 and the following mes-
sage will appear:
S/N ENTRY UNIT S/N = YYYY XXX ZZZ
UNIT SERIAL NUMBER POS 8-10 = XXX
At this point, the letters entered for the YYYY and XXX
inputs should now appear in the top line of the display
and should match the first 7 characters of the serial
number on the unit Data Plate. The next three digits of
the serial number should now be keyed in. Press the
(ENTER) key to store the input. The full serial number
should now be displayed across the top of the display
and the cursor should disappear.
Press the STATUS key to go to the next STATUS display
to determine if additional Status messages are preventing
the chiller from operating.
270
(ENTER)

▼
(DOWN ARROW)

FORM 201.21-NM1 (1223)
JOHNSON CONTROLS