Screens And Diagnostic Leds Information, Units With S/N 832170 And Lower - Norcold 1200 series Service Manual

Screens and Diagnostic LEDS Information, Units with S/N 832170 and Lower

Screen 1, LED Segments Reliability Check
Screen 1 confirms that the LED screen and LED lights
are operational. All LED segments and LED lights should
light. See illustration.
If the screen segments or lights do not match the ones
shown in the illustration, the fault is in the optical control
assembly. Replacing the optical control should resolve
the fault. See page 41.
Press the button to bring up screen 2.
MODE
Screen 2, LED Segments Reliability Check
Screen 2 diagnostics continue to confirm the reliability of
the display. The numerical LED segments and the LED
lights turn off. See illustration.
ON
If any of the LED screen segments or LED lights display,
the fault is in the optical control assembly. Replacing the
optical control should resolve the fault. See page 41.
Press the button to bring up screen 3.
MODE
Screen 3, Inputs and Outputs
Screen 3 displays the real time activity of the refrigerator.
Divider heater operational
Flame present
Press the button to bring up screen 4.
MODE
Refrigerator Service Manual
Coldest
Cold
TEMP
ON
MODE
OFF SET
AUTO AC LP GAS
Cold Coldest
TEMP
MODE
OFF SET
AUTO AC LP GAS
Screen number
Power to gas valve
AC present
Coldest
Cold
ON TEMP
MODE
SET
OFF
AUTO AC LP GAS
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Screen 4, Inputs and Outputs
Screen 4 displays the real time activity of the refrigerator.
Doors closed and light off
AC power to AC heaters
Voltage to selected operating mode*
Power to flapper heater
* Selected operating mode
displayed on the mode lights
Press the button to bring up screen 5.
MODE
Screen 5, Stored Fault History
Screen 5 displays stored fault history using LED lights.
If a fault occurred, its assigned fault history LED will
be on.
Incorrect AC voltage to heaters**
Problem with AC heater(s)**
Ignition failure occured**
Flame sense failure occured**
**Lighted LEDs on this screen indicate a previous failure.
Press the button to bring up screen 6.
MODE
Screen 6, Stored Fault History
Screen 6 displays stored fault history using LED lights. If
a fault occurred, its assigned fault history LED will
be on.
Inner control failure**
AC power not available**
Door ajar for 2+ minutes**
**Lighted LEDs on this screen indicate a previous failure.
Press the button to bring up screen 7.
MODE
1200XX/120X-IMXX Models
Screen number
Power to light
Coldest
Cold
ON TEMP
MODE
SET
OFF
AUTO AC LP GAS
Screen number
AC relay stuck open**
AC voltage high**
AC voltage low**
Cold Coldest
ON TEMP
MODE
SET
OFF
AUTO AC LP GAS
Thermistor failure**
Screen number
DC voltage high**
DC voltage low**
Cold Coldest
ON TEMP
MODE
OFF SET
AUTO AC LP GAS
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