Norcold 2118IM Service Manual page 27

Diagnostic Mode, cont'd.
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.
Diagnostic Screen 9 (Initial View)
Diagnostic Screen 8 (Initial View)
Screen 8 (Initial view)
Screen 8 displays "live" power board outputs using lighted LED
segments. The following illustration provides definitions 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.
Diagnostic Screen 8 (Second View)
Not used
DC power to
light switch
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.
www.norcold.com
Diagnostic Screen 8 (Second View)
Screen 8 (Second view)
All segments shown as being on
Not used
DC power to
light switch
AC heater relay is energized
1
2 3
DC power to divider heater
4
Gas valve relay is energized
6
5 DC power to ignition circuit
7
Not used
Screen 9. Power Board DC Input Voltage Status
Press the MODE button to bring up screen 9.
Diagnostic Screen 9 (Initial View)
Screen 9 (Initial view)
Screen 9 displays DC voltage status using lighted LED segments.
Refer to illustration below for definitions 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.
Diagnostic Screen 9 (Second View)
Not used
AC heater relay is energized
1
Not used
2 3 DC power to divider heater
4
Gas valve relay is energized
6
5 DC power to ignition circuit
7
Not used
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.
Diagnostic Screen 9 (Initial View)
Screen 0 (Initial view)
Screen 0 displays AC voltage status using lighted LED segments.
Refer to illustration below for definitions of the individual LED seg-
ments.
27
Diagnostic Screen 9 (Second View)
Screen 9 (Second view)
All segments shown as being on
DC voltage higher than 15.4 volts
1
2 3
Not used
4
DC voltage normal
6
5 Not used
7
DC voltage lower than 10.5 volts
Diagnostic Screen 9 (Second View)
Screen 0 (Second view)
All segments shown as being on
DC voltage higher than
1
Not used
2 3 Not used
4
DC voltage normal
Not used 5 6
Not used
7
DC voltage lower than 1
AC voltage higher tha
1
Not used
2 3 Not used
4
AC voltage normal
Not used 5 6
Not used
7
AC voltage lower than
SERVICE MANUAL