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www.norcold.com/cda 63N6XX/N8XX ModelsRefrigerator Service Manual
Figure 47. Models N64X/N84X Optical Control Assembly.
Diagnostic Mode
The Diagnostic Mode uses ten diagnostic channels,
commonly known as "screens", to display "live"
inputs, outputs, and fault history. Each screen is
identified by a number, which shows in the optical
control assembly display. See Figure 47.
The N64X/N84X optical control display uses a dual 7-
segment LED module to display the screen number
and diagnostic information. Information made up of four
letters or digits displays in an alternating sequence.
Fault history, "live" inputs, and outputs is presented
using LED segments. The diagnostic LED segments, if
present, display to the right of the screen number.
Diagnostic LED segments identification numbers. See
Figure 48.
Exiting the Diagnostic Mode
To exit the Diagnostic Mode:
1. Press and hold
MODE
and
TEMP
SET
buttons at the
same time.
2. Release the
MODE
and
TEMP
SET
buttons as soon as the
display shows .
Turning the refrigerator OFF then back ON also exits
the Diagnostic Mode.
DIAGNOSTIC MODE — MODELS N64X/N84X
ON
TEMP
SET
MODE
ON-OFF
1-COLD COLDEST-9
Display
Accessing the Diagnostic Mode
To access the Diagnostic Mode:
1. Press and hold both the
MODE
and
TEMP
SET
buttons at
the same time.
2. Release the
MODE
and
TEMP
SET
as soon as screen
displays.
3. A few seconds later, displays.
Changing Screens
To change screens, press and hold the
MODE
button
until the next screen displays.
Figure 48. Diagnostic LEDs Segments Identification.
1
2 3
7
4
5 6
ON Light