Norcold 121X series, Руководство по обслуживанию

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S
ection
9
73
s
ection
9 —d
iAgnostics
Diagnostic Mode
The diagnostic mode is a tool incorporated in
the controls. This tool is designed to assist in
verifying temperature, inputs, outputs, and to
retrieve recorded fault stored by the controls.
The diagnostic mode has ten diagnostic
channels commonly known as “screens”.
Each screen has a particular function. For
example, “screen three (3) displays fin
temperature, and screens four (4) and five (5)
display stored fault history.
The optical control display employs dual 7-
segment LED displays to show information.
The screen number always shows in the left
side of the display.
Illuminated segments to the right side of
screen number provide stored fault history,
inputs, outputs and voltage status. Figure 91
shows the screen number location and LED
segments numbering.
Setting Display to Diagnostics
To set the display to diagnostics:
1. Press and hold down the
MODE
and
SET TEMP
switch buttons at the same time.
2. Release the switch buttons when
1 COLD-
9 COLDEST
displays.
3. Within two seconds
1 COLD-
9 COLDEST
displays on the
screen.
Displaying screens
1 COLD-
9 COLDEST
through
1 COLD-
9 COLDEST
:
1. Press the
MODE
button.
2. Release the switch button when the next or
the desired screen number displays.
Returning the Display to Normal Mode:
1. Press and hold down the
MODE
and
SET TEMP
switch buttons at the same time.
2. Release the switch buttons when the active
operation mode displays.
1 COLD-
9 COLDEST
1
3
6
2
5
7
4
Screen Number 1 - 0
Segments Number
Figure 9-1. —Optical control display screen and
segments numbering.

NOTE
Powering the refrigerator OFF and back ON
also returns the optical control display to its
normal display mode.