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Polar Series N7V, N7X, N7XL / N8V, N8X, N8XL
Gas Mode
In AUTO GAS mode and MANUAL GAS mode
, the controls ener-
gize the solenoid coil to open the gas valve. Spring pressure closes
the valve when the controls stop the flow of current to the solenoid
coil.
The propane gas burner will cycle in response to the fin tempera
-
ture to maintain cabinet temperature.
The controls use an electronic sparker to ignite the propane gas at
the burner.
AC Mode
AUTO AC or MANUAL AC mode operation requires 108 to 132
volts AC. Voltage is to be supplied through a 2 pole, 3-wire, 20 Amp
grounding type receptacle.
A 120 volt AC heater generates the heat load required for AUTO
AC and Manual AC operation. To replace the heater, the refrigera-
tor must be removed from the enclosure.
Burn hazard! Allow canister and heaters
to cool before attempting to remove and
replace.
The AC electric heater will cycle in response to the fin temperature
to maintain the cabinet temperature.
DC Mode (3-way models only)
AUTO DC or MANUAL DC mode operation requires 10.5 to 16.0
volts DC.
A 12 volt DC heater generates the heat load required for AUTO DC
and Manual DC operation. To replace the heater, the refrigerator
must be removed from the enclosure.
Burn hazard! Allow canister and heaters
to cool before attempting to remove and
replace.
The DC electric heater will cycle in response to the fin temperature
to maintain the cabinet temperature.
ATTENTION
!
WARNING
ATTENTION
!
WARNING
Diagnostic Pre checks
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).
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 replacing 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.
NOTICE
CONTROLS - N7LX AND N8LX MODELS, cont’d.
