Self Diagnostics
To enter Self Diagnostic mode, both temperature control panel displays must be illuminated. A display
can be illuminated by pressing an adjacent temperature adjustment button. When both displays are
illuminated, set the freezer and refrigerator temperature settings to 5. Simultaneously press and hold all
4 temperature adjustment buttons for approximately 3 seconds. A flashing 0 in the refrigerator and
freezer displays will indicate that the refrigerator is in Self Diagnostic mode.
To perform a self diagnostic test, locate the test in Table 2, Diagnostic Tests.
For temperature control panels with single-digit displays, the COLDER temperature adjustment button
will increment the numbers up and the WARMER temperature adjustment button will increment the
numbers down. Use the freezer temperature adjustment buttons to enter the test code number in the
freezer display. Use the refrigerator temperature adjustment buttons to enter the test code number in
the refrigerator display. When a test code has been entered, the displays will flash to confirm the test.
Press the HOLD button for 3 seconds to begin the test.
For temperature control panels with 3-digit displays, the COLDER temperature adjustment button will
increment the numbers down and the WARMER temperature adjustment button will increment the
numbers up. Use the freezer temperature adjustment buttons to enter the test code number in the
freezer display. Use the refrigerator temperature adjustment buttons to enter the test code number in
the refrigerator display. When a test code has been entered, the displays will flash to confirm the test
code. Press any button other than a temperature adjust button to begin the test.
When testing has been completed, do one of the following things:
• Enter code 1 5 to completely reset the system.
• Enter code 1 6 to exit diagnostic mode. The temperature control panel is reset automatically.
• Unplug the refrigerator for at least 10 seconds. Test mode will terminate when the refrigerator is
plugged back in.
Test mode will terminate automatically after 15 minutes of inactivity.
Table 2. Diagnostic Tests
Freezer
Display
Refrigerator
Display
Mode Comments
0 2
Temperature control panel to main
control board communication
P on the FZ display if OK.
F on the FZ display if not OK.
0 3
Temperature control panel to
dispenser board communication
P on the FZ display if OK.
F on the FZ display if not OK.
0 4
Dispenser board to main control
board communication
P on the FZ display if OK.
F on the FZ display if not OK.
0 6
Temperature control panel selftest
See Temperature Control Panel Self-Test on page 35.
0 7
Control and sensor system selftest
See Control and Sensor Self-Test on page 36.
1 0 Open damper Damper will open, pause briefly, then close.
1 1 Fan speed test Each fan will run for 10 seconds, then stop.
1 2 100% run time
This mode runs the sealed system 100% of the time
for 1 hour.
1 3 Enter pre-chill
This places the freezer in pre-chill mode. The
refrigerator will return to normal operation on its own.
1 4 Enter defrost
This will set the refrigerator into the defrost mode. If
the cabinet is not cold when executed, this mode may
execute extremely fast. The refrigerator will return to
normal operation on its own.
1 5 Refrigerator reset Causes a system reset.
1 6 Test mode exit
Causes system to exit test mode and resets
temperature control panel.
1 7 Degree C/F
Refrigerator temperature adjust keys can be used to
change display from F to C or C to F.
