16
www.norcold.com
Polar Series N7V, N7X, N7XL / N8V, N8X, N8XL
A thermistor is mounted on the fin assembly located inside the
fresh food compartment. The thermistor acts as a temperature sen-
sor, reporting the temperature sensed to main control board (power
board) which turns on/off the appropriate heat source accordingly.
The user interface (controls), main control board assembly (power
board assemlby), thermistor, and other components within the
refrigerator are interconnected via a wire harness.
Air in the Propane Gas Supply Lines
For safety reasons, the refrigerator elec-
tronic controls are designed so that while
operating in Propane Gas Mode, the trial
for ignition (the maximum time that the
gas valve and the igniter can be left on
without a flame present) is limited to 30
seconds. When starting the refrigerator for
the first time, after storage, or after replac
-
ing the propane gas tanks(s), the propane
gas supply lines can have air in them.
Due to the air in the gas supply lines, the
burner may not ignite within the 30 second
time limit. If this happens, the gas valve
and igniter outputs will be turned off, the
propane gas mode will be “locked out,”
and the appropriate fault code will show in
the display.
The gas lock out condition can be reset
by powering the refrigerator OFF and
back ON, at which time a new 30 second
trial for ignition will begin. You may need
to repeat this procedure several times to
remove all of the air from the gas supply
lines.
Refrigerator Temperature Settings
The user interface (controls) has three (3) temperature settings.
The temperature setting can be changed within the temperature set
mode of the user interface (controls). To enter the temperature set
mode (See Fig. 12):
■
Touch and hold the ON / OFF button. The power ON indica-
tor light will go out. Continue to hold the Power ON / OFF
button. The power ON indicator light will come on after 20
seconds and go off again after 23 seconds. Continue to
hold the Power ON / OFF button. The power ON indicator
light will come on again after 30 seconds. Release Power
ON / OFF button.
The color of the power ON indicator light shows the current tem-
perature setting of the refrigerator:
■ Green shows the COLD temperature setting.
■
Amber shows the COLDER temperature setting.
■
Red shows the COLDEST temperature setting.
Touch and release the Power ON button and the Power ON / indi-
cator light will flash on and off, which indicates that the temperature
setting can be changed.
NOTICE
While the Power On indicator light is flashing, touch and release
the Power ON button to change to each of the three (3)temperature
settings, one at a time.
When the desired temperature setting is shown, touch and hold
the Power On button for ten (10) seconds to exit the temperature
setting mode. The Power ON / indicator light will stop flashing and
return to the solid GREEN or AMBER.
Diagnostic Prechecks
Diagnosing fault codes begins by starting with the basics. In many
cases, the problem can be solved by verifying the unit is operating
in acceptable conditions:
■
The refrigerator is plugged into a known working AC outlet
with a voltage between 108VAC and 132VAC
■
Extension cords are not being used to supply AC power to
the refrigerator
■
The refrigerator is connected to a known working DC power
supply and/or battery supplying between 10.5 and 16.0
VDC
■
Propane gas is available to the refrigerator and is regulated
between 10.5 and 11.5” WC (Inches of Water Column).
USER INTERFACE (Controls) - N7V and N8V Models, cont’d.
