40
www.norcold.com
Polar Series N7V, N7X, N7XL / N8V, N8X, N8XL
TROUBLESHOOTING FLOWCHARTS - N7LX AND N8LX MODELS
Possible Cause:
No flame is sensed present at the
burner when there should be one.
The burner did not ignite or re-ignite.
This fault can occur in AUTO MODE or
MANUAL GAS MODE
Fault Code - “no” “FL” with audible alarm
The thermistor has been sensed as inoperable, so the tem-
perature is being controlled via backup operating system.
Refer to “Fault Code -
Flashing Temperature Set-
ting” on page 48.
The refrigeratro will not turn ON.
Refer to “Blank Display” on
page 49.
FAULT CODES - N7LX AND N8LX MODELS, cont’d.
set
Temperature setting flashes on/off at one (1)
second intervals any time the user interface
(control) is “awake”.
Blank display.
CODE
CODE
Alternately flashes “no” and “FL”
with an audible alarm.
Before starting this procedure, make sure:
■
The valve of the RV propane gas tank)s) is open.
■
The manual shut-off valve of the gas train assembly is open.
■ The propane gas pressure to the refrigerator is 10.5 inches W.C.
NOR000707A
Plugged
into working AC
outlet with min.
85 VAC?
YES
Correct AC outlet.
NO
AC power
cord in good
working
condition?
YES
Replace AC power cord.
NO
YES
Replace fuse.
NO
Is
8A fuse on
main control
board assy
(pwr board)
intact?
YES
Correct.
NO
Are all
propane gas
valves open and
supply free of
air?
YES
Clean burner.
NO
Is burner clean?
YES
Replace main control board assembly
(power board assembly).
NO
Does
main control
board (pwr board)
supply 12VDC to
gas train?
Replace gas train.
YES
Correct gap.
NO
Is burner/
electrode gap
1/8”-3/16”?
YES
Correct. Replace spark / sense
ignitor wire if needed.
NO
Spark/sense
wire installed
correctly w/
continuity?
YES
Replace gas train assembly.
NO
Gas valve
solenoid coil
resistance
74-92 Ohms?
YES
Correct. Replace wires if needed.
NO
Wires to gas
valve connected
w/continuity?
Continued on following page.