Norcold Polar 7 Series User manual

NORCOLD, Inc.
P.O. Box 4248
Sidney, OH 45365-4248
Part No. 639301B (6/4/2018)
English
Owner’s Manual
FIRE OR EXPLOSION HAZARD
If you smell gas or ammonia:
1. Open Windows
2. Do not attempt to light appliance.
3. Do not touch electrical switches.
4. Extinguish any open ame.
5. Shut off fuel supply.
6. Evacuate immediately and call emergency services.
Failure to follow these instructions could result in re or explosion, which could cause
property damage, personal injury, or death.
Improper installation, adjustment, alteration, service or maintenance
can cause injury or property damage. Refer to this manual. For
assistance or additional information, contact a qualied installer,
service agency, or the gas supplier.
FOR YOUR SAFETY
Do not store or use gasoline or other ammable vapors and liquid in the
vicinity of this or any other appliance.
WARNING
!
WARNING
!
Norcold Customer Support Dept.
Telephone: [phone]
Fax: [phone]
Web Site: www.norcold.com
For Polar 7 Series (N7V, N7X or N7LX) models: 7 cu. ft., 2-way, 3-way (only available on LX
models), or with ice maker, R.V Refrigerators.
For Polar 8 Series (N8V, N8X or N8LX) models: 8 cu. ft., 2-way, 3-way (only available on LX
models), or with ice maker, R.V Refrigerators.
The model numbers of 3-way (only available on LX models) refrigerators include “.3”. The
model numbers of 2-way refrigerators do not.
Any letters following the above model numbers means a refrigerator option.

Owner’s Manual 2
Table of Contents
For dened warranty terms, please see the one page warranty statement included in the product information packet.
Safety Awareness.....................................................................................................................................................................................3
Safety Instructions....................................................................................................................................................................................3
About Your Refrigerator............................................................................................................................................................................4
Storage volume .................................................................................................................................................................................4
Leveling.............................................................................................................................................................................................4
Operation during travel......................................................................................................................................................................4
Food compartment ............................................................................................................................................................................4
Freezer compartment........................................................................................................................................................................4
Crisper(s)...........................................................................................................................................................................................4
Door bins...........................................................................................................................................................................................4
Door bin slide( N7LX and N8LX models)..................................................................................................................................................5
Adjustable shelves ............................................................................................................................................................................5
Door handles.....................................................................................................................................................................................5
Interior light........................................................................................................................................................................................6
Shut down .........................................................................................................................................................................................6
Moisture reduction heater..................................................................................................................................................................6
Temperature control system..............................................................................................................................................................6
Operating the Refrigerator Controls (N7V and N8V Models) ...................................................................................................................7
Ignition and startup............................................................................................................................................................................7
Air in the propane gas line.................................................................................................................................................................7
Automatic Mode Operation (N7V and N8V models)..........................................................................................................................7
Shut down .........................................................................................................................................................................................7
Backup Operating System.................................................................................................................................................................7
Operating the Refrigerator Controls (N7X and N8X models) ...................................................................................................................8
Ignition and startup............................................................................................................................................................................8
Air in the propane gas line.................................................................................................................................................................8
Automatic mode operation ................................................................................................................................................................8
Manual AC mode operation...............................................................................................................................................................9
Manual LP gas mode operation ........................................................................................................................................................9
Shut down .........................................................................................................................................................................................9
Backup operatiing system .................................................................................................................................................................9
Operating the Refrigerator Controls (All N7LX and N8LX).....................................................................................................................10
Ignition and startup..........................................................................................................................................................................10
Air in the Propane Gas supply lines ................................................................................................................................................10
Automatic Mode Operation..............................................................................................................................................................10
Manual AC Mode Operation............................................................................................................................................................ 11
Manual LP Gas Operation............................................................................................................................................................... 11
Manual DC Operation...................................................................................................................................................................... 11
Shut down ....................................................................................................................................................................................... 11
Effects of High Altitude on Propane Gas Operation ...............................................................................................................................12
Effects of Freezing Temperatures on Refrigerator Operation.................................................................................................................12
Icemaker (N7LXIM and N8LXIM models................................................................................................................................................12
Icemaker Operation.........................................................................................................................................................................13
Refrigerator Care Checklist ...................................................................................................................................................................13
Defrosting ...............................................................................................................................................................................................14
Cleaning .................................................................................................................................................................................................14
Interior .............................................................................................................................................................................................14
Door Sealing...........................................................................................................................................................................................15
Refrigerator Storage...............................................................................................................................................................................15
Ice Maker Storage (All N7LXIM and N8LXIM)........................................................................................................................................15
Refrigerator Maintenance Checklist .......................................................................................................................................................16
Refrigerator Maintenance.......................................................................................................................................................................16
Remove and clean burner...............................................................................................................................................................16
Remove the Refrigerator ........................................................................................................................................................................17
Re-Install the Refrigerator ......................................................................................................................................................................18
Replacement Parts.................................................................................................................................................................................18
Wiring Pictorial........................................................................................................................................................................................19
Wiring Schematic....................................................................................................................................................................................20
Fault Codes (All N7V and N8V models) .................................................................................................................................................21
Fault Codes (All N7X and N8X models) .................................................................................................................................................22
Fault Codes (All N7LX and N8LX models) .............................................................................................................................................23

Owner’s Manual 3
Safety Instructions
Safety Awareness
Read this manual carefully and understand the contents before you use the refrigerator.
Be aware of possible safety hazards when you see the safety alert symbol on the refrigerator and in this manual. A signal word follows
the safety alert symbol and identies the danger of the hazard. Carefully read the descriptions of these signal words to fully know their
meanings. They are for your safety.
This indication means a hazard, which if ignored, can cause serious personal injury, death, or property
damage.
This indication means a hazard, which if ignored, can cause personal injury or property damage.
- The storage of ammable materials behind or around the refrigerator creates a re hazard. Do not use the area
behind the refrigerator to store anything, especially ammable materials (gasoline, cleaning supplies, etc.)
- Do not remove the round ground prong from any of the AC power cords. Do not use a two prong adapter or an
extension cord with any of the AC power cords.
- A circuit overload can result in an electrical re if the wires and/or fuses are not the correct size. Use only the wire
and fuse sizes as written in the “Installation Manual”.
- Incorrect installation, adjustment, change to, or maintenance of this refrigerator can cause personal injury, property
damage, or both. Have service and maintenance work done by your dealer or by an Norcold authorized service
center.
- Disconnect both the AC and DC power sources before doing any maintenance work on the refrigerator. All service
work on this refrigerator must be done by a qualied service technician.
- Do not bypass or change the refrigerator’s electrical components or features.
- When you discard an appliance, remove all doors to prevent accidental entrapment and suffocation.
- Do not spray liquids near electrical outlets, connections, or the refrigerator components. Many liquids are electrically
conductive and can cause a shock hazard, electrical shorts, and in some cases re.
- The refrigerator cooling system is under pressure. Do not try to repair or to recharge a defective cooling system. The
cooling system contains sodium chromate. The breathing of certain chromium compounds can cause cancer. The
cooling system contents can cause severe skin and eye burns, and can ignite and burn with an intense ame. Do not
bend, drop, weld, move, drill, puncture, or hit the cooling system.
- At regular intervals, make sure that the refrigerator ue the burner, the vent areas, and the ventilation air pathway
between the vents are completely free from any ammable material or blockage. After a period of storage, it is
especially important to check these areas for any ammable material or blockage caused by animals or insects.
- The rear of the refrigerator has sharp edges and corners. To prevent cuts or abrasions when working on the
refrigerator, be careful and wear cut resistant gloves.
WARNING
!
WARNING
!
CAUTION
!
CAUTION
!

Owner’s Manual 4
About Your Refrigerator
Storage Volume:
This refrigerator is made for storage of foods and frozen food and for making ice.
Total capacity N7 models - 6.5 cubic feet N8 models - 7.6 cubic feet
Leveling:
The refrigerator is made to operate within 3° off level side-to-side and 6° off level front-to-back (as looking at
the front of the refrigerator). Operating it at more than these limits can cause damage to the cooling system
and create a risk of personal injury or property damage. Make sure the vehicle is level before you operate
the refrigerator.
Operation during travel:
While the refrigerator should be level when the vehicle is stopped, performance during travel is not usually effected.
Food compartment:
Start up the refrigerator and let it cool for eight hours before loading with food. If the refrigerator does not start to cool down after about
two hours, contact your dealer or a Norcold authorized service center.
For the best cooling performance:
- Let air move freely inside the entire food compartment.
- Do not cover the shelves with plastic, paper, etc.
To decrease the amount of ice that collects on the cooling ns:
- Cover all liquids and moist foods.
- Let all hot foods cool before putting them in the refrigerator.
- Do not open the door any longer than necessary.
Freezer compartment:
The freezer compartment is made to keep pre-frozen food frozen and not to quick freeze food. Keep pre-frozen foods in the freezer
compartment.
Do not put other items on the ice tray while the water is freezing. The water freezes more rapidly if the thermostat is at
the COLDEST position.
Crisper(s):
The crisper(s) are located at the bottom of the fresh food compartment and supply a storage area to preserve fruit and vegetable
freshness. Make sure that you always push the crispers fully in.
Do not wash the crispers in a dishwasher. The crispers are not dishwasher safe.
Door bins:
You may put the door bins [52] of the freezer and fresh food compartment in a location that best meets your needs (See Art02632). To
remove the bins, lift them over the locator and pull them forward. To install the bins, push them onto the locator.
Do not wash the door bins and bin slides in a dishwasher. The door bins and bin slides are not dishwasher safe.
CAUTION
!
NOTICE
NOTICE
NOTICE

Owner’s Manual 5
Door bin slide: (N7LX and N8LX models)
Each door bin [52] includes an adjustable door bin slide [53] to prevent the bin contents
from moving or overturning during transit (See Art02632).
Push each door bin slide against the bin contents. To remove each door bin slide, rotate it
out of the bin. Rotate the each bin, slide into the bin to install.
Adjustable shelves:
The shelves in the freezer and the fresh food compartment are made so you can remove
them or move them.
To remove or move the shelf of the freezer:
- Pull the shelf forward out of the slot.
- Push it fully into the slot that you wish.
To remove or move the shelves of the fresh food compartment:
- Remove the screws [41] from the individual shelf retainers [54] in the back of the refrigerator (See Art02622).
- Remove the retainer.
- Pull each shelf forward out of the slot.
- Push each fully into the slot that you wish.
- Install the individual retainer in the back of the refrigerator with the screws.
Door handles:
During travel, the door latch prevents the door from opening. When closing each door,
push the door toward the refrigerator until you hear a “click” sound.
To open each door, pull the handle away from the refrigerator (See Art 02633).
41
54
ART 02622
53
52
Art 02632
Art 02633

Owner’s Manual 6
Interior light:
The interior light is at the top of the fresh food compartment. The light remains on at all times while the refrigerator is on. To replace the
interior light:
Shut down:
- To shut down the refrigerator, touch and hold the ON/OFF button two
seconds and release.
Unplug wire harness connector [154].
To remove interior light:
- Remove two (2) screws [41].
Install new light in reverse order.
Moisture reduction heater:
The refrigerator has a heater that prevents moisture from forming on
the center divider between the doors of the freezer and the fresh food
compartment. The heater operates only when the refrigerator is ON.
Temperature control system:
Although the refrigerator is not frost -free, it is made to limit frost on the cooling ns. At regular intervals, the temperature control system
automatically melts most of the frost from the cooling ns. The water from the cooling ns drains into a collection cup that is attached
to the back of the refrigerator. The heat of the cooling system evaporates the water from the collection cup.
Art 02634
41
154
41
57

Owner’s Manual 7
Ignition and start up:
Control boards are extremely sensitive. Evidence of tampering or removal from protective case
will VOID any warranty.
Before ignition or start up of the refrigerator:
- Make sure the air ow in the lower intake vent , through the refrigerator coils and condenser, and out the upper
exhaust vent is not blocked or decreased.
- Make sure there are no combustible materials in or around the refrigerator.
- Make sure the DC voltage to the refrigerator is 12.0VDC.
Air in the propane gas supply lines
For safety reasons,the refrigerators electronic controls are designed such that while operating in the LP
GAS mode, the trial for ignition (maximum amount of the time the gas valve and igniter can be left on
without a ame present) is limitied to 30 seconds. When starting the refrigerator for the rst time, after
storage, or after replacing the propane gas tank, the propane gas supply lines can have air in them.
Due to air in the gas supply lines, the burner may not ignite within the 30 second time limit. In the event
this should happen the gas valve and igniter outputs will be turned off, the LP Gas mode will be “locked
out”, and the appropiate fault code will be shown in the display. See fault code section of this manual.
The gas lock out condition can be reset by powering the refrigerator OFF and then back ON, at which time,
a new 30 second trial for ignition will commence. It may be necessary to repeat this procedure several
times before expelling all the air from the LP gas supply line. If after repeated attempts, a ame is not
established, stop and consult your local dealer
or Authorized Norcold Service Center.
Automatic mode operation (N7V and N8V Models)
- Touch and release the ON / OFF button [30] to turn the
refrigerator on.(See Art02628)
- If the indicator light [185] glows solid green, it means:
- 120 volt AC power is available to the refrigerator.
- The refrigerator is operating on AC electric power.
- If the indicator light [185] glows solid amber, it means:
- 120 volt AC power is not available to the refrigerator.
- The refrigerator is operating on propane gas.
- If the indicator light [185] glows solid red, it means:
- There is a problem and the refrigerator is not cooling.
- Refer to the “Fault code” section of this manual.
Shut down:
- To shut down the refrigerator, touch and hold the ON/OFF button [30] for two seconds and release.
Backup operating system:
This refrigerator has a backup operating system. The backup operating system allows the refrigerator to continue to cool if the
temperature sensor of the refrigerator should fail. If this failure occurs:
- The refrigerator automatically changes to the backup operating system.
- The indicator light [185] will turn off for one second, every twenty seconds.
Operating the Refrigerator Controls: (All N7V and N8V models)
Art 02628
30 185
NOTICE
NOTICE

Owner’s Manual 8
- The backup operating system can over freeze or thaw the contents of the freezer and the fresh food compartment.
- Make sure the temperatures of the freezer and the fresh food compartment are satisfactory.
Ignition and start up:(N7X and N8X models)
Control boards are extremely sensitive. Evidence of tampering or removal from protective case
will VOID any warranty.
Before ignition or start up of the refrigerator:
- Make sure the air ow in the lower intake vent , through the refrigerator coils and condenser, and out the upper
exhaust vent is not blocked or decreased.
- Make sure there are no combustible materials in or around the refrigerator.
- Make sure the DC voltage to the refrigerator is 12.0VDC
Air in the propane gas supply lines
For safety reasons,the refrigerators electronic controls are designed such that while operating in the LP
GAS mode, the trial for ignition (maximum amount of the time the gas valve and igniter can be left on
without a ame present) is limitied to 30 seconds. When starting the refrigerator for the rst time, after
storage, or after replacing the propane gas tank, the propane gas supply lines can have air in them.
Due to air in the gas supply lines, the burner may not ignite within the 30 second time limit. In the event this
should happen the gas valve and igniter outputs will be turned off, the LP Gas mode will be “locked out”,
and the appropiate fault code will be shown in the display. See fault code section of this manual.
The gas lock out condition can be reset by powering the refrigerator OFF and then back ON, at which time,
a new 30 second trial for ignition will commence. It may be necessary to repeat this procedure sveral times
before expelling all the air from the LP gas supply line. If after repeated attempts, a ame is not established,
stop and consult your local dealer or Authorized Norcold Service Center.
Automatic mode operation:
- Touch and release the ON/OFF button [30] to turn the refrigerator on.(See Art02627)
- If the indicator light [185] glows solid green, it means the
refrigerator is operating correctly.
- Touch the TEMP SET button [32] as needed to set the
temperature setting.
- One snowake lit up is the warmest setting.
- Five snowakes lit up is the coldest setting.
- If the AUTO icon [277] and AC PLUG icon [283] are lit up, it
means that:
- 120 volt AC power is available to the refrigerator.
- The refrigerator is operating on AC electric power.
- If the AUTO icon and the FLAME icon [284] are lit up, it means that:
- 120 volt AC power is not available to the refrigerator.
- The refrigerator is operating on propane gas.
Operating the Refrigerator Controls (N7X and N8X models)
30 185
NORCOLD
MODE
A
31 32 187
277
283
284
Art 02627
NOTICE
NOTICE

Owner’s Manual 9
- If the indicator light [185] glows solid red, it means:
- There is a problem and the refrigerator is not cooling.
- Refer to the “Fault Code” section of this manual.
Manual AC Mode Operation:
- Touch and release the ON/OFF button [30] to start the refrigerator.
- Touch the MODE button [31] until the AUTO icon [277] goes off and only the AC PLUG icon [283] remains lit.
- Touch the TEMP SET button [32] as needed, to set the temperature setting.
- The AC PLUG icon [283] remains lit until you select a different operating mode or shut down the refrigerator.
- If the indicator light [185] glows solid red or ashes, it means:
- There is a problem and the refrigerator is not cooling.
- Refer to the “Fault Code” section of this manual.
Manual LP Gas Mode Operation:
- Touch and release the ON/OFF button [30] to start the refrigerator
- Touch the MODE button [31] until the AUTO icon goes off and only the LP GAS icon [284] remains lit.
- Touch the TEMP SET button [32] as needed, to set the temperature setting.
- The FLAME icon [284] remains lit until you select a different operating mode or shut down the refrigerator.
- If the indicator light [185] glows solid red or ashes, it means:
- There is a problem and the refrigerator is not cooling.
- Refer to the “Fault code” section of this manual.
Shut down - All models:
- To shut down the refrigerator, touch and hold the ON/OFF button [30] for two seconds and release.
Backup operating system:
This refrigerator has a backup operating system. The backup operating system allows the refrigerator to continue to cool if the
temperature sensor of the refrigerator should fail.
If this failure occurs:
- The refrigerator automatically changes to the backup operating system.
- Snowake(s) will ash when TEMP SET button [32] is touched.
- The backup operating system can over freeze or thaw the contents of the freezer and the fresh food compartment.
- Make sure the temperatures of the freezer and the fresh food compartment are satisfactory.

Owner’s Manual 10
Ignition and start up:(All N7LX and N8LX models)
Control boards are extremely sensitive. Evidence of tampering or removal from protective case
will VOID any warranty.
Before ignition or start up of the refrigerator:
- Make sure the air ow in the lower intake vent, through the refrigerator coils and condenser, and out the upper
exhaust vent is not blocked or decreased.
- Make sure there are no combustible materials in or around the refrigerator.
- Make sure the DC voltage to the refrigerator is 12.0VDC
Air in the propane gas supply lines
For safety reasons,the refrigerators electronic controls are designed such that while operating in the LP
GAS mode, the trial for ignition (maximum amount of the time the gas valve and igniter can be left on
without a ame present) is limitied to 30 seconds. When starting the refrigerator for the rst time, after
storage, or after replacing the propane gas tank, the propane gas supply lines can have air in them.
Due to air in the gas supply lines, the burner may not ignite within the 30 second time limit. In the event this
should happen the gas valve and igniter outputs will be turned off, the LP Gas mode will be “locked out”,
and the appropiate fault code will be shown in the display. See fault code section of this manual.
The gas lock out condition can be reset by powering the refrigerator OFF and then back ON, at which time,
a new 30 second trial for ignition will commence. It may be necessary to repeat this procedure several times
before expelling all the air from the LP gas supply line. If after repeated attempts, a ame is not established,
stop and consult your local dealer or Authorized Norcold Service Center.
Automatic Mode Operation:
- Touch and release the ON/OFF button [30] to turn the refrigerator
on. (See Art 02629).
- Touch the TEMP SET button [32] as needed to set the
temperature setting.
- Number one(1) shown in the display [187] is the warmest
setting.
- Number nine(9) shown in the display [187] is the coldest
setting.
- If the AUTO icon [277] and AC PLUG icon [278] are lit up, it means that:
- 120 volt AC power is available to the refrigerator.
- The refrigerator is operating on AC electric power.
- After ten seconds, the backlight of the display goes off.
- If the AUTO icon and the FLAME icon [289] are lit up, it means that:
- 120 volt AC power is not available to the refrigerator.
- The refrigerator is operating on propane gas.
- After ten seconds, the backlight of the display goes off.
Operating the Refrigerators Controls (All N7LX and N8LX models)
30 31 32
187
277
278 289
AUTO
NORCOLD
MODE
set
CODE
361
Art 02629
NOTICE
NOTICE

Owner’s Manual 11
If neither 120 volts AC nor propane gas are available to the refrigerator :
- 2-way refrigerators:
- The fault codes “no AC” and then “no FL” show in the display and an audible alarm sounds.
- Refer to the “Fault Codes” section of this manual for any faults displayed.
- 3-way refrigerators only:
- The Auto icon and the Battery icon [361] are lit up.
- After ten seconds, the backlight of the display goes off
- This means that the refrigerator is operating on DC electric.
If an energy source is available to the refrigerator but is not operating correctly:
- While operating in the Automatic mode, the refrigerators electronic controls will automatically select the energy source using the
following priority scheme:
1st choice: AC Electric
2nd choice: LP GAS
3rd choice: DC Electric (3-way refrigerators only)
- When in the Auto mode, if a higher priority choice becomes available (i.e., AC voltage reapplied), the control shall stop
using the current mode and switch to the higher priority mode.
Manual AC Mode Operation:
- Touch and release the ON/OFF button [30] to start the refrigerator
- Touch the MODE button [31] until the AUTO icon goes off and only the AC PLUG icon [278] remains lit.
- Touch the TEMP SET button [32] as needed, to set the temperature setting.
- The AC PLUG icon [278] remains lit until you select a different operating mode or shut down the refrigerator.
Manual LP GAS Operation:
- Touch and release the ON/OFF button [30] to start the refrigerator
- Touch the MODE button [31] until the AUTO icon goes off and only the FLAME icon [289] remains lit.
- Touch the TEMP SET button [32] as needed, to set the temperature setting.
- The FLAME icon [278] remains lit until you select a different operating mode or shut down the refrigerator.
Manual DC Operation:
- Touch and release the ON/OFF button [30] to start the refrigerator
- Touch the MODE button [31] until the AUTO icon goes off and only the BATTERY icon [361] remains lit.
- Touch the TEMP SET button [32] as needed, to set the temperature setting.
- The Battery icon [278] remains lit until you select a different operating mode or shut down the refrigerator.
Shut down - All models:
- To shut down the refrigerator, touch and hold the ON/OFF button[30] for two second and release.

Owner’s Manual 12
When you operate the refrigerator on propane gas at altitudes higher than 5500 feet above sea level:
- You may experience reduced cooling performance of the refrigerator.
- You may experience burner outages.
To avoid these possible problems, Norcold recommends that you operate the refrigerator on AC when at altitudes higher than 5500 feet
above sea level.
A gas absorption refrigerator is not designed to operate in freezing temperatures. If the refrigerator is not equipped for low temperature
operation, and if the cooling system of the refrigerator is exposed to temperatures of 32° F. or lower for an extended period of time,
the refrigerator operation may be disrupted. The refrigerator operation will resume when the cooling system of the refrigerator warms
sufciently.
If the refrigerator is equipped for low temperature operation, the refrigerator will operate in temperatures down to 0° F.
Disrupted operation of the refrigerator, due to extended exposure to temperatures of 32° F. or lower, and any costs incurred to warm the
cooling system of the refrigerator are not covered by the Norcold limited warranty. Please contact your local RV dealer for information
about how to resume refrigerator operation or about how to equip your refrigerator for operation in freezing temperatures.
Do not change the installation or the venting of your refrigerator. Refrigerator failures, which are the result of changes to either the
refrigerator installation or to the venting, are not covered by the Norcold limited warranty.
The ice maker is assembled to the refrigerators at the factory as optional equipment. If the refrigerator does not have a factory installed
ice maker, one can not be added to the refrigerator at a later time.
The ice maker is fully automatic and will operate in ambient temperatures as low as 0° F. To allow operation at temperatures between
0° F. and 32° F., the ice maker has a heater on the solenoid water valve and on the water line between the solenoid water valve and the
ice maker.
The water line heater does not protect the water supply line from the vehicle shut off valve to the solenoid
water valve on the back of the refrigerator.
When the freezer temperature of the refrigerator is low enough, the ice maker opens the water solenoid valve and lls the mold. The
ice maker ejects the frozen ice into a storage bin. As the storage bin lls, the ice raises the shut-off arm until it turns off the ice maker.
As you use the ice and lower the ice level in the storage bin, the shut-off arm also lowers. This turns the ice maker on and begins the
process of making ice.
For maximum production of ice, the freezer blower must be turned on.
Effects of High Altitude on Propane Gas Operation
Effects of Freezing Temperatures on Refrigerator Operation
CAUTION
!
Ice Maker (N7LXIM and N8LXIM models)
NOTICE

Owner’s Manual 13
The ice maker operates on:
- Cold potable water at a pressure of 15 psi - 125 psi.
- 120 Volts AC (108 VAC min. - 132 VAC max.).
Ice maker operation:
1. Make sure the ice maker AC power connection is secure.
- On N7LXIM and N8LXIM models, the refrigerator AC power cord supplies AC to
the ice maker.
- On model N8LXIM, a separate (white) AC power cord supplies AC to the ice maker.
2. Open the water shut off valve of the vehicle.
Make sure that the ice maker arm can move freely and does not touch the frozen
foods in the freezer.
3. Push the ice maker arm down to the ON position [60] (See Art 01015).
If you operate the refrigerator without connecting the water supply line and/or opening the water shut off valve of the
vehicle, make sure the ice maker arm is up in the OFF position.
4. Allow the freezer to cool enough and ice production will begin to ll the storage bin [61].
New plumbing connections and/or impurities in the water supply line after winterizing can cause the rst ice to be
discolored or have an odd avor.
5. To stop the ice maker, push the ice maker arm up to the OFF position [62].
Your refrigerator will give you years of trouble free service if you do these simple checks every three to six months:
- Keep the food compartment and the freezer clean. See “Cleaning”.
- Defrost the refrigerator as necessary. See “Defrosting”.
- Make sure the door seals correctly. See “Door Sealing“.
- Be aware of any cooling changes that are not because of weather, loading, or gas control changes. If changes occur, contact your
dealer or service center.
- Make sure the gas supply is propane gas only and not butane or a butane mixture.
- When in propane gas operation, examine the appearance of the ame. See “Gas Flame Appearance”.
- Make sure the air ow in the lower intake vent, through the refrigerator coils and condenser, and out the upper exhaust vent is not
blocked or decreased.
- Make sure the area behind the refrigerator is clear. Do not use the area behind the refrigerator for storage of anything, especially
gasoline and other ammable vapors and liquids.
CAUTION
!
NOTICE
NOTICE
Refrigerator Care Checklist
Art 01015
60
62
61

Owner’s Manual 14
Defrosting
The cooling ns of the refrigerator operate at below freezing temperature and will naturally form frost from humidity, which is always
present in the air. The humidity inside the refrigerator increases:
- With higher outside temperature and humidity.
- With the storage of non-sealed fresh foods or warm foods.
- With the amount of time that the door(s) are open.
- With any air leakage into the refrigerator.
Although the refrigerator is not frost -free, it is made to limit frost on the cooling ns. At regular intervals, the temperature control system
automatically melts most of the frost from the cooling ns. The water from the cooling ns drains into a collection cup that is attached to
the back of the refrigerator. The heat of the cooling system evaporates the water from the collection cup.
It is normal for frost to collect inside the freezer. Excess frost decreases the cooling performance of the refrigerator. Defrost the
refrigerator and freezer as necessary:
- Remove all food from the refrigerator.
- Turn the refrigerator OFF.
Defrosting the refrigerator makes excess water inside the refrigerator.
- Remove the drain hose from the drip cup at the rear of the refrigerator.
- Put the drain hose into a half-gallon or larger container to capture water.
NOTICE
- Put dry towels (etc.) inside the refrigerator and freezer to absorb melted frost.
High temperatures can cause the inside surfaces of the refrigerator to warp or melt. Do NOT use pans of
HOT water, a hair dryer, or any other high temperature devices to defrost the refrigerator. Do not use any
hard or sharp objects to remove frost. Damage to the interior of the refrigerator can occur.
- To increase the speed of defrosting, put pans of WARM water in the refrigerator and freezer.
- Remove the wet towels (etc.) and dry the interior.
- Remove the drain hose from the large container and put the drain hose back into the drip cup.
- Remove the large container from the enclosure.
- Start up the refrigerator.
- Allow the refrigerator to cool down.
- Return all food to the refrigerator.
Interior:
A good time to clean the refrigerator is just after you defrost it. Clean the inside of the refrigerator as often as necessary to avoid food
odors:
- Remove all food from the refrigerator.
Do not use abrasive cleaners, chemicals, or scouring pads because they can damage the interior of the refrigerator.
- Wash the interior with a mild cleaner or a solution of liquid dish detergent and warm water.
- Rinse with a solution of baking soda and clean water.
- Dry with clean cloth.
- Put all food in the refrigerator.
Cleaning
NOTICE
CAUTION
!

Owner’s Manual 15
Before the refrigerator is stored for an extended (seasonal) period of time:
- Defrost and clean the interior of the refrigerator.
- Close the doors with the storage latch.
If the refrigerator is stored for an extended period of time, before start up:
- Make sure there are no obstructions in the vents, the ventilation air pathway, the burner, the orice, or the ue area.
To prepare the ice maker for seasonal storage:
1. Close the vehicle water supply valve to the ice maker.
2. Push the ice maker arm up until it locks into the OFF position.
3. Remove the garden hose adapter from the water solenoid valve.
4. Remove the ice maker water line from the water solenoid valve
- Do not unwrap the water line heater wires from around the water solenoid valve.
5. Drain all of the water from both the water supply line and the ice maker water line.
6. Put the end of the water supply line, the end of the ice maker water line, and the water solenoid valve each into a clean plastic bag.
7. Use tape to close each plastic bag around the water lines and the water solenoid valve.
To use the ice maker after seasonal storage:
Do not operate the ice maker when the ambient air temperature is 0° F. or lower. Damage to the water
solenoid valve and the water supply line can occur.
1. Remove the tape and plastic bags from the end of the water supply line, the end of the ice maker water line, and the water solenoid
valve.
2. Connect the ice maker water line to the water solenoid valve.
3. Connect the garden hose adapter to the water solenoid valve.
4. Push the ice maker arm down into the ON position.
5. Open the vehicle water supply valve to the ice maker.
You should discard and not use the rst two batches of ice cubes. It will take about three cycles for the ice maker to
make fully formed and clean ice cubes.
Check the seal of the doors.
If either door does not seal correctly, excess frost will collect inside the refrigerator. Make sure the doors seal correctly (See Art00980):
- Close each door on a piece of paper that is about the size and thickness of a dollar bill.
- Gently pull the paper.
- You should feel a slight drag between the gasket and the cabinet.
- Do this on all four sides of the door.
- If you do not feel a slight drag on the
paper, the door does not seal correctly.
- Have your dealer or an authorized Norcold Service Center correct the seal of the door.
Door Sealing
Refrigerator Storage
Ice Maker Storage (All N7LXIM and N8LXIM models)
CAUTION
!
Art 00980
NOTICE

Owner’s Manual 16
Read and understand the following maintenance sections of this manual.
Norcold is not responsible for installation, adjustment, alteration, service, or maintenance performed by anyone other
than a qualied RV dealer or a Norcold authorized service center.
Never attempt to run the gas train when it is not installed in the cooling unit because of the risk of electrical
shock.
Have a qualied RV dealer or a Norcold authorized service center do these annual safety and maintenance checks:
- Examine the gas supply lines for leaks.
- Replace or repair if needed.
- Make sure the propane gas pressure is 11 inches of water column.
- Adjust if needed.
- Make sure the combustion seal is complete and intact.
- Replace or repair it if needed.
- Make sure the burner and the burner orice are clean.
- Clean if needed.
- Make sure the electrode is clean and that the spark gap is 3/16 inch. (See
Art 02673)
- Adjust if needed.
- Make sure the AC voltage is 108 - 132 volts and the DC voltage is 10.5 - 15.4 volts.
- Make sure the area at the rear of the refrigerator is free of any combustible materials, gasoline, and other ammable vapors and
liquids.
While in GAS operation, examine the appearance of the gas ame:
- Open the lower intake vent.
The burner box door can be hot. Wear gloves to avoid burns.
- Open viewing door.
- Look at the gas ame [75] (See Art 02684).
- The ame should be:
- A darker blue color on the inside of the ame and a lighter blue color on the
outside of the ame.
- A constant shape without ickering.
- Contact your dealer or Norcold authorized service center if the ame is:
- yellow
- ickering or changing shape.
- Make sure the ame does not touch the inside of the ue tube [76].
- If the ame touches the inside of the ue tube, contact your dealer or Norcold authorized service center.
- Close the burner box door.
Remove and clean the burner orice:
Your dealer or Norcold authorized service center must do this procedure.
Refrigerator Maintenance
CAUTION
!
3/16
Art 02673
Refrigerator Maintenance Checklist
NOTICE
Art 02684
75 76
167
WARNING
!

Owner’s Manual 17
Remove and clean the burner orice:
- Close the valve at the propane gas tank(s).
- Push the ON / OFF button to shut down the refrigerator.
- Open the lower intake vent to expose the back of the refrigerator.
The burner box cover can be hot. Wear gloves to avoid burns.
- Disconnect the the Gas Train Assembly (GTA) from the LP supply.
To avoid possible propane gas leaks, always use two wrenches to
loosen and tighten the gas supply line connections.
- Remove the Gas Train Assembly from the cooling unit by removing the two screws. (See
Art 02672)
Do not try to remove the orice [79] from the orice adapter [80]
when cleaning. Removal will damage the orice and seal of the orice and can cause a propane gas leak.
Leaking propane gas can ignite or explode which can result in dangerous personal injury or death. Do not
clean the orice with a pin or other objects.
- Clean the openings of the burner tube with compressed air pressure only (See Art 02671)
- Assemble the gas train assembly back to the cooling unit and tighten the two screws removed.
- Assemble the gas supply to the gas train assembly and tighten using two wrenches.
- Open the valve at the supply gas tank(s) and turn on the refrigerator choosing gas as the power source.
- Check all connections for gas leaks using leak test solution.
- Replace lower intake vent.
Your dealer or Norcold authorized service center must do this procedure.
The rear of the refrigerator has sharp edges and corners. To
prevent cuts or abrasions when working on the refrigerator, be
careful and wear cut resistant gloves.
1. Close the valve at the propane gas tank(s).
To avoid possible propane gas leaks, always use two wrenches
to loosen and tighten the gas supply line connections.
2. Open the lower intake vent
3. Remove the black AC power cord from the receptacle.
4. Remove the DC wiring from the refrigerator:
- Put a mark on the DC wires so you can put them back in the correct location.
- Remove the DC fuse or remove the DC wiring from the battery or the converter.
- Remove the DC wires from the refrigerator.
5. Remove the gas supply line from the bulkhead tting of the refrigerator.
6. Remove the screws from the mounting ange at the rear of the refrigerator.
7. Remove the top plastic trim by pulling it from the mounting brackets.
8. Remove the screws from the upper and lower mounting anges on the front of the refrigerator.
9. Remove the refrigerator from the opening.
CAUTION
!
WARNING
!
WARNING
!
Art 02672
Air Air
Air
Air
Art 02671
Remove the Refrigerator
WARNING
!
CAUTION
!

Owner’s Manual 18
Reinstall the Refrigerator
Your dealer or Norcold authorized service center must do this procedure.
Make sure the combustion seal is not broken, is completely around the refrigerator mounting anges, and
is between the mounting anges and the wall of the enclosure. If the combustion seal is not complete,
exhaust fumes can be present in the living area of the vehicle. The breathing of exhaust fumes can cause
dizziness, nausea, and in extreme cases, death.
1. Push the refrigerator completely into the enclosure.
2. Put screws through the upper mounting bracket of the refrigerator and into the enclosure wall. Snap top plastic trim back into place.
3. Push the bottom trim piece into the front of the refrigerator.
4. Put two screws through the bottom trim piece, the mounting ange, and into the oor.
5. Install the screws in the mounting ange at the rear of the refrigerator.
To avoid possible propane gas leaks, always use two wrenches to loosen and tighten the gas supply line
connections.
6. Attach the gas supply line to the gas train assembly tting of the refrigerator.
7. Open the valve at the propane gas tank(s).
Do not allow the leak checking solution to touch the electrical components. Many liquids are electrically
conductive and can cause electrical shorts and in some cases, re.
8. Examine the gas supply line for leaks.
9. Connect the DC wiring to the refrigerator:
- Connect the DC wires to the refrigerator.
- Install the DC fuse or connect the DC wiring to the battery or the converter.
10. Connect the black AC power cord to the receptacle.
WARNING
!
WARNING
!
WARNING
!
Replacement Parts
You may purchase replacement parts through your local RV dealer or authorized Norcold Service Center.

Owner’s Manual 19
Wiring Pictorial
Main Control Board/
Carte de Commande Principal
GND
LIMIT_IN
LIMIT_OUT
T1
F2-7.5A
F1-5A
F3-8A
P4
12VDC
11 10 9
5438 7621
1213141516
21
CHASSIS_GND
CHASSIS_GND
L1 L2
AC_HT_LO
AC_HT_HI
AC_HT_LO_2
AC_HT_HI_2
P1
A
1
2
3
4
5
P1
User Interface/ L'interface Utilisateur
M
B13
P1-11
12
P1-4
P1-2
10
L
K
P1-5 P1-3
*E
*D
P1-1 P1-6
4
6
*F
H
J
P1-7 P1-10
* : Optional/
En Option
:
Optional/
En Option
: Chassis Ground/La Masse du Châssis
C
Green
Green
Brown
Thermal Fuse/ Fusible Thermique
White
White
Black (ribbed) Black (smooth/bon)
Black
AC Power Cord/ Cordon d'Alimentation CA
Main Control Board/ Carte de Commande Principal
Solenoid (Water Valve)
+
Ice Maker/ Machine à Glace
* Ice Maker/Machine à Glace
G
Foamed In/En Mousse
*D
*R
P1-13
P1-9
3
P1-12
P1-14
12VDC/12VCC
GND
*D
Side B
Wiring Schematic and Wiring Pictorial Schéma de câblage et câblage picturale 639064C Model/ Modeles N7-N8-N10 Polar Series
F1, DC-5A Fuse/F1, Fusible 5A DC..... Control Fuse/Le Fusible de Commande F2, DC-7.5A Fuse/F1, Fusible 7.5A DC..... Auxiliary Fuse/Fusible Auxiliaire F3, AC-8A Fuse/F3, Fusible 8A AC..... AC Heater Fuse/Fusible Chauffage AC *F1, DC-30A Fuse/F1, Fusible 30A DC..... DC Heater Fuse/Fusible Réchauffeur DC
2
1
*F1-30A
GND
12V
HTR_GND
DC_HTR
P1
DC Heater Board/ Carte de Chauffage CC
*N
*P
GND
12VDC/12VCC
GND
12V
*S
8
*Sw
A: Main Control Board/Carte de Commande Principal B: AC Power Cord/Cordon d'Alimentation CA C: AC Heater/
Réchauffeur d'AC
D:
Thermostat/Thermostat
E: Waterline Heater/Chauffe-Eau F:
Condenser Fan/Ventilateur du condenseur
G:
Divider Heater/Chauffage de Diviseur
H: Ignitor/L'Inflammateur J: Gas Valve/Distributeur de Gaz K: Fresh Food Thermistor/Thermistance d'Aliments Frais L: Interior Light/La lumière de L'intérieur M: User Interface/L'Interface Utilisateur N:
DC Heater Board/Carte de Chauffage CC
P:
DC Heater/Chauffe-DC
R: Cold Weather Heater/Chauffage Par Temps Froid
S: Freezer Blower/Ventilateur Congelatèur
Sw: Switch/Switch T1:
Spark Transformer/Transformateur d'Allumage
1
1a 1b

Owner’s Manual 20
Wire Schematic
F1-5A
GND
12VDC
42
F2-7.5A
53
61
13 9
2 1
2 1
RD-WH/RG-BC
BK-WH/NR-BC
WH-BK/BC-NR
2
1
2
1
RD/RG
RD/RG
BK/NR
1
2
3
4 5
P1
12
GN/VE
WH/BC
BK/NR
WH-VT/BC-VT
L1 L2
AC_HT_LO
AC_HT_HI
AC_HT_LO_2
AC_HT_HI_2
BK/NR
BK/NR
F3-8A
P1
710
REG
14
K4
COMBUS
BU/BL
K3
Q6
K1
K2
Q1
WH/BC
WH/BC
11
2
1
*F1-30A
GND
12V
HTR_GND
DC_HTR
P1
DC Heater Board/ Carte de Chauffage CC
*N
*P
*YEL/JN
*YEL/JN
GND
12VDC/12VCC
GN-YL/VE-YL
P4
16 8
OR/OR
GND
12V
A
B
120VAC 120VCA
C
*D
*D
*D
*E
*F
*R
G
H
K
J
M
L
T1
LH
T
NO
OFF
NC
NO
NC
NO
M
V
N
SW1
SW2 SW3
TF
* Ice Maker/Machine à Glace
MH TS
WV
MTR
GND
NC
120VAC 120VCA
TF: Thermal Fuse/Fusible Thermique MH: Mold Heater/Chauffage du Moule TS: Thermostat/Thermostat SW1: Shut Off Switch/L'Interrupteur d'Arrêt MTR: Motor/Motor SW2: Hold Switch/Commutateur Hold Sw3: Water Fill Switch/Interrupteur de Remplissage d'Eau WV: Water Valve/L'Eau de Condensation Test Points/Des Points de Test L: Line (120VAC)/Line (120VCA) H: Molde Heater/Chauffage du Moule T: Thermostat/Thermostat N: Neutral/Point Mort M: Motor/Motor V: Valve/Distributeur
F1, DC-5A Fuse/F1, Fusible 5A DC..... Control Fuse/Le Fusible de Commande F2, DC-7.5A Fuse/F1, Fusible 7.5A DC..... Auxiliary Fuse/Fusible Auxiliaire F3, AC-8A Fuse/F3, Fusible 8A AC..... AC Heater Fuse/Fusible Chauffage AC *F1, DC-30A Fuse/F1, Fusible 30A DC..... DC Heater Fuse/Fusible Réchauffeur DC
WH/BC
WH/BC
User Interface/ L'Interface Utilisateur
Auxiliary Outputs/Les sorties auxiliaires
A: Main Control Board/Carte de Commande Principal B: AC Power Cord/Cordon d'Alimentation CA C: AC Heater/
Réchauffeur d'AC
D:
Thermostat/Thermostat
E: Waterline Heater/Chauffe-Eau F:
Condenser Fan/Ventilateur du condenseur
G:
Divider Heater/Chauffage de Diviseur
H: Ignitor/L'Inflammateur J: Gas Valve/Distributeur de Gaz K: Fresh Food Thermistor/Thermistance d'Aliments Frais L: Interior Light/La lumière de L'intérieur M: User Interface/L'Interface Utilisateur N:
DC Heater Board/Carte de Chauffage CC
P:
DC Heater/Chauffe-DC
R: Cold Weather Heater/Chauffage Par Temps Froid
S: Freezer Blower/Ventilateur Congelatèur
Sw: Switch/Switch T1:
Spark Transformer/Transformateur d'Allumage
Main Control Board/ Carte de Commande Principal
12VDC/12VCC
GND
Side A
Wiring Schematic and Wiring Pictorial Schéma de câblage et câblage picturale 639064C Model/ Modeles N7-N8-N10 Polar Series
K1
11 10 9
5438 7621
1213141516
P1
2 1
*S
Q7
: Optional/
En Option
:
Optional/
En Option
: Chassis Ground/La Masse du Châssis
*
12VDC/12VCC
COMBUS
3.3VDC/3.3VCC
12VDC/12VCC
12VDC/12VCC
12VDC/12VCC
Grommet/
Passe-câble
COMBUS
12VDC/12VCC
*Sw
1 1a