Norcold 2118 - Diagnostic Mode - Power Board Status; Power Board Inputs and Outputs (Screens 7 & 8); DC Input Voltage Status (Screen 9)

SERVICE MANUAL
27
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1 Food compartment light is off and door is closed.
2 Flame is sensed.
3 Thermistor is sensing fin temperature.
4 Not used.
5 Not used.
6 Not used.
7 Not used.
Screen 8. Power Board Outputs
Press the MODE button to bring up screen 8.
Screen 8 (Initial view) Screen 8 (Second view)
All segments shown as being on
Screen 8 displays “live” power board outputs using lighted LED
segments. The following illustration provides denitions of the
“live” outputs indicated by the individual LED segments. If a power
board output is active or “live,” its assigned output LED seg-
ment will be on.
Individual Segment Identification
1 AC heater relay is energized.
2 Not used.
3 DC power to divider heater.
4 Gas valve relay is energized.
5 DC power to light switch.
6 DC power to ignition circuit.
7 Not used.
Diagnostic Mode, cont’d.
Diagnostic Screen 8 (Initial View) Diagnostic Screen 8 (Second View)
1
2
3
5
6
7
4
Not used
DC power to
light switch
AC heater relay is energized
DC power to divider heater
Gas valve relay is energized
DC power to ignition circuit
Not used
NOR000125A-8
Diagnostic Screen 8 (Initial View) Diagnostic Screen 8 (Second View)
1
2
3
5
6
7
4
Not used
DC power to
light switch
AC heater relay is energized
DC power to divider heater
Gas valve relay is energized
DC power to ignition circuit
Not used
NOR000125A-8
Screen 9. Power Board DC Input Voltage Status
Press the MODE button to bring up screen 9.
Screen 9 (Initial view) Screen 9 (Second view)
All segments shown as being on
Screen 9 displays DC voltage status using lighted LED segments.
Refer to illustration below for denitions of the individual LED seg-
ments. If DC voltage at the power board is within normal range
(10.5 to 15.4 VDC), LED segment 4 will be on.
Individual Segment Identification
1 DC voltage higher than 15.4 volts.
2 Not used.
3 Not used.
4 DC voltage normal.
5 Not used.
6 Not used.
7 DC voltage lower than 10.5 volts.
Screen 0. Power Board AC Input Voltage Status
Press the MODE button to bring up screen 0.
Screen 0 (Initial view) Screen 0 (Second view)
All segments shown as being on
Screen 0 displays AC voltage status using lighted LED segments.
Refer to illustration below for denitions of the individual LED seg-
ments.
Diagnostic Screen 9 (Initial View) Diagnostic Screen 9 (Second View)
1
2
3
5
6
7
4
Not used
Not used
DC voltage higher than 15.4 volts
Not used
DC voltage normal
Not used
DC voltage lower than 10.5 volts
NOR000125A-9
Diagnostic Screen 9 (Initial View) Diagnostic Screen 9 (Second View)
1
2
3
5
6
7
4
Not used
Not used
DC voltage higher than 15.4 volts
Not used
DC voltage normal
Not used
DC voltage lower than 10.5 volts
NOR000125A-9
Diagnostic Screen 9 (Initial View) Diagnostic Screen 9 (Second View)
1
2
3
5
6
7
4
Not used
Not used
AC voltage higher than 132 volts
Not used
AC voltage normal
Not used
AC voltage lower than 85 volts
NOR000125A-0