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Refrigerator Service ManualN6XX/N8XX Models
AC-Manual Mode
In the AC-Manual Mode, AC power is the only heat
energy source selected by the controls. When the
controls shift to AC-Manual Mode:
No AC Power or Loss of AC Power
If the controls do not sense the presence of AC power
or when AC power is lost, the controls:
1. Display the "no" "AC" fault code.
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2. Sound the audible alarm. The alarm is an
intermittent beeping tone. Pressing the mode
switchbutton silences the alarm.
3. Record and store the "no" "AC" fault in diagnostics
nonvolatile memory fault history.
AC Power Restored
When AC power is restored, the controls:
1. Automatically restore AC-Manual Mode operation;
however, the recorded fault history will not be
erased from memory.
2. Silence the alarm and clear then "no" "AC" fault
code from the display.
Troubleshooting "no" "AC" Fault
Use the following references to identify, troubleshoot,
and correct a no AC fault.
n Page 16, "A"/"no" "AC" fault codes
troubleshooting flowchart.
n Page 62, Diagnostic Mode – N62X/N82X Model,
Screen 4.
The auto sequence described in steps 1 through 5 is
repeated after the completion of each cooling cycle to
enable the controls to select a higher priority heat
energy source if available.
The control's priorities for selecting a heat energy source
are:
n First priority: AC power.
n Second priority: LP gas.
n Third priority: DC power – 3-way units only.
NOTE 2
AUTO DC Operation – 3-Way Units Only
In AUTO DC mode, the controls shift to DC power
when AC power is not present and flame is not
sensed. The shift to AUTO DC operation does not
show on the display. The shift is invisibly performed by
the controls. When the controls shift to AUTO DC:
4 Not sensing a flame causes the controls to shift to
Auto DC power. The shift to DC power is not
displayed. See NOTE 1.
Pressing the MODE switchbutton displays the "AC"
mode indicator.
NOTE 3
Pressing the MODE switchbutton will displays the "AU"
and "dc" indicators.
NOTE 1
1. The AC mode indicator ("AC")displays as
the controls start the search for AC
power.
2. When AC power is selected, the AC
indicator turns off. The ON LED displays.
See NOTE 3.
5. The ON LED displays. See NOTE 2.
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2. "AU" and "AC" indicators
alternate flashing on the display
as the controls search for AC
power.
1. The AUTO ("AU") mode operation
indicator displays.
3. When AC power is not present the
controls shift to AUTO LP mode.
"AU" and "LP" indicators alternate
flashing on the display as the
controls start a 30 seconds trial-for
ignition.
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