Norcold N400 User manual

WARNING: Improper installation, adjustment, alteration, service or maintenance

can cause injury or property damage. Refer to this manual. For

assistance or additional information, contact a qualified installer,

service agency, or the gas supplier.

FOR YOUR SAFETY

Do not store or use gasoline or other flammable vapors and liquid in the

vicinity of this or any other appliance.

FOR YOUR SAFETY

If you smell gas:

1. Open windows.

2. Don’t touch electrical switches.

3. Extinguish any open flame.

4. Immediately call your gas supplier.

Owner’s Manual

For model N400X - a 4.5 cu. ft., 2-way or 3-way, refrigerator.

For model N510X - a 5.5 cu. ft., 2-way or 3-way, refrigerator.

The model numbers of 3-way refrigerators include “.3”. The model numbers of 2-way mod-

els do not.

The letter “X” in the model number above, stands for a letter or a numeral which means a

refrigerator option.

NORCOLD, Inc.

P.O. Box 4248

Sidney, OH 45365-4248

Part No. 623669E (7-04)

English

French

Norcold Customer Support Dept.

Telephone: 800-543-1219

Fax: 937-497-3183

Web Site: www.norcold.com

Owner’s Manual 2

Table of Contents

Gas Absorption 3 Year Limited Warranty Policy......................... 2

Gas Absorption Warranty Information ........................................ 3

Gas Absorption Warranty Questions.......................................... 3

Safety Awareness ....................................................................... 4

Safety Instuctions ....................................................................... 4

About Your Refrigerator .............................................................. 4

Storage volume ................................................................... 4

Leveling ............................................................................... 4

Food compartment.............................................................. 4

Flip-up shelf ........................................................................ 5

Door bins............................................................................. 5

Freezer compartment.......................................................... 5

Operation during travel........................................................ 5

Door latch for travel and storage......................................... 5

Temperature control system (N510 models) ..................... 5

Operating the Refrigerator Controls (N400 models)................. 5

Control Panel ...................................................................... 5

Ignition - propane gas operation ........................................ 6

Do a test of the gas safety valve.......................................... 6

Start up -AC operation......................................................... 6

Start up - DC operation (N400.3 models)........................... 6

Shut down ........................................................................... 6

Operating the Refrigerator Controls (N510 models)................. 6

Control Panel ...................................................................... 6

Automatic mode operation.................................................. 7

Removing the air from the propane gas supply lines ........ 7

Set the controls to automatic mode operation ................... 7

Set the controls to manual mode operation ....................... 8

Cooling unit sensing........................................................... 8

Backup operating system ................................................... 8

DC Operation Precautions (N400.3, and N510.3 models) ....... 9

DC Operation Guidelines (N400.3, and N510.3 models) ......... 9

Effects of High Altitude on Propane Gas Operation................... 9

Refrigerator Care Checklist ..................................................... 10

Defrosting ................................................................................. 10

N510 Models only ............................................................. 10

Cleaning ................................................................................... 10

Drip tray ............................................................................. 10

Door Sealing ............................................................................ 10

Refrigerator Maintenance Checklist .........................................11

Refrigerator Storage ..................................................................11

Refrigerator Maintenance......................................................... 12

Gas flame appearance ..................................................... 12

Remove and clean the burner orifice ............................... 12

Remove the Refrigerator .......................................................... 12

Reinstall the Refrigerator ......................................................... 13

Replacement Parts .................................................................. 13

Wiring Pictorial (N400 models)................................................ 13

Wiring Diagram (N400 models) .............................................. 14

Wiring Pictorial (N510 models)................................................ 14

Wiring Diagram (N510 models) .............................................. 14

Fault Codes (N510 models) .................................................... 15

Norcold • P.O. Box 4248 • Sidney, OH • USA • 45365-4248

Provided it is properly installed, properly maintained and placed

under normal service and use, Norcold, Inc. warrants its

refrigeration equipment to be free from defects in material and

workmanship for three years with respect to the equipment’s

component parts, and for two years with respect to the labor to

repair or replace such parts, commencing from the original date

of purchase.

Limitations of warranty

1. This Warranty applies only to Norcold gas absorption

refrigerator operating equipment. This Warranty does not

extend to glassware, electric light bulbs, and replaceable

fuses.

2. This warranty does not apply to parts and assemblies that

have been subjected to misuse, improper installation,

improper or abnormal service, transit damage, recharging of

the cooling system, accident, fire, improper repair, tampering

or abuse.

3. Irrespective of the nature of the warranty protection offered or

claimed, the period of warranty shall in no case extend

beyond three years for component parts and two years for the

labor to repair or replace such parts, commencing from the

original date of purchase of the new equipment.

4. In order to obtain the remedy of repair and replacement, the

refrigerator must be brought to any Norcold Service Center for

warranty service. The end consumer is responsible for all

expenses resulting from any remote service call if the

refrigerator cannot be brought into the Norcold service center.

5. It is the responsibility of the end consumer to have mainte-

nance performed upon the warranted equipment one time

during the second year or before the beginning of the third

year after original purchase. Such maintenance is required to

maintain this warranty in effect and failure to perform such

maintenance will void the remainder of the warranty. Re-

quired maintenance during the second year or before the

third year after purchase is cleaning and checking of the

following: Burner, Flue, Spiral Baffle, Roof Cap Screen, and

Control Board Sequence.

LIMITATIONOF REMEDY

1. THERESPONSIBILITY OFNORCOLD UNDERTHIS ORANY

WARRANTYIS LIMITEDTOTHEREPAIRORREPLACEMENT

(ATNORCOLD’SOPTION)OFTHEDEFECTIVE PARTOR

ASSEMBLY.

NORCOLD - GasAbsorption 3 Year Limited

Warranty Policy

Owner’s Manual 3

GasAbsorption Warranty Information

2. INNO EVENTANDUNDER NOCIRCUMSTANCESSHALL

NORCOLDBE RESPONSIBLEUNDERTHISLIMITEDWAR-

RANTYFORANYOTHERCHARGEWHATSOEVER,INCLUDING

BUTNOT LIMITEDTO CHARGESOR CLAIMSFORLABOR,

LOSTBUSINESS,LOST TIME,LOSTPROFITS,LOSSOF USE,

ORANYKINDOFINCIDENTALORCONSEQUENTIALDAM-

AGES,HOWEVERDENOMINATEDORDESCRIBED. THE

REMEDYUNDERTHIS WARRANTYISLIMITEDTOREPLACE-

MENTORREPAIR.

3. SOMESTATESDONOTALLOW THE EXCLUSIONOR

LIMITATIONOFINCIDENTALORCONSEQUENTIALDAMAGES,

SOTHEABOVE EXCLUSIONMAYNOTAPPLYTOYOU.

DISCLAIMEROFOTHER WARRANTIES

THISWARRANTYISEXPRESSLYINLIEUOFALLOTHER

WARRANTIES EITHEREXPRESSED ORIMPLIED. ALLOTHER

WARRANTIES,EXPRESSEDORIMPLIED,INCLUDINGANY

WARRANTYOFMERCHANTABILITYORFITNESSFORAPAR-

TICULARPURPOSE,AREHEREBYDISCLAIMED ANDEX-

CLUDED.

Legal rights

This warranty gives you specific legal rights, and you may have

other legal rights, which vary from state to state.

Your refrigerator is made to provide the ultimate in cooling

satisfaction and will serve you reliably in the years to come.

Norcold refrigerators are the only RV refrigerators made in the

United States and offer a standard limited three-year warranty.

Norcold also offers an additional warranty coverage plan which

extends the standard limited three-year warranty. To activate

your three-year limited warranty and to receive an invitation to

participate in the extended warranty plan, complete and mail the

warranty registration supplied.

Help us to help you.

Write the model number and serial number below for future

reference. These numbers are on the serial plate in the

refrigerator. The serial plate is located in the fresh food

compartment on the top right hand side. Use these numbers

when receiving service or in any correspondence concerning

your refrigerator.

Model number ___________ Serial number ___________

If a problem occurs with your refrigerator, contact any of the

service centers throughout the United States and Canada. To

find an authorized Norcold Service Center near you, please

telephone the Norcold Customer Support Dept. at 800-543-

1219 (option-1) or visit our web site at www.norcold.com.

Norcold is committed to providing products that are in harmony

with the environment. Your Norcold refrigerator meets all

environmental safety standards.

GasAbsorption Warranty Questions

About your warranty

Thiswarrantycoveragebegins on theoriginaldate of purchase bythe

consumerpurchaserandisthe only warranty fortheNorcoldrefrigera-

tor. In no case will the Limited Warranty extend beyond two (2) years

for labor and three (3) years for parts and freight. Norcold reserves

therighttochange design or specificationsofa refrigerator without

obligationtomodify previouslyproducedrefrigerators. There areno

otherwarranties,either expressedorimplied.

What is coverd by this warranty?

- Defectsinmaterial andworkmanship.

- Parts and labor for two (2) years

- Partsonlyfor the thirdyearif therequired maintenanceisperformed.

- Freight(ground service only)for shipment ofareplacementpart

and for return of the defective part.

What is not covered by this warranty?

- Shippingmethodsother thangroundservice.

- Defectsinglassware,electric light bulbs,andreplacement fuses.

- Adjustmentofthe burner electrode.

- Cleaningofthe burner.

- Feesformobilerepair service.

- Mileageortravelexpenses to obtainwarrantyservice.

- Expensesforrequired maintenance asspecifiedin theLimited

Warrantyand in theOwner’sManual.

- Incidentalorconsequentiallossor damageincluding butnotlimited to

chargesorclaimsfor labor (includinglaborwhenno parts areused

forarepair),lost business, losttime,lost profits, lost food,andlost

use.

- Replacementpartsthat arenotmanufactured orsuppliedby Norcold.

- Defectofapartor assembly when thedefectoriginatesfrom misuse,

improperinstallation,improperorabnormalservice,transitdamage,

rechargingofthe coolingsystem,accident, fire,improperrepair,

tampering,orabuse.

What will Norcold do?

Forarefrigerator thatisproperly installed,maintained,and usedas

specifiedinthe Installation/Owner’sManuals,Norcold responsibilities

are:

- Limitedtothe repairandreplacement ofparts.

- To provide no charge parts and labor for two (2) years.

- To provide no charge parts only for year 3 if the required mainte-

nanceisperformed.

- To provide freight (ground service only) for shipment of a replace-

ment part and for return of a defective part for three (3) years.

What will the refrigerator owner do?

To obtain warrantyservice,the refrigerator ownerresponsibilitiesare:

- Touse, service, andmaintainthe refrigeratorasspecifiedin the

Installation/Owner’sManuals.

- Todeliver the warrantedproductto an authorizedNorcoldService

Center for warranty repair.

- To show proof that the refrigerator is within warranty coverage.

- To havetherequired maintenanceperformedby anauthorized

NorcoldServiceCenter onetimeduring year 2oftheLimited

Warranty.

- To pay tohave the required maintenance performed.

- To mailpaidreceipt toNorcoldshowing required performedbefore

expirationofyear2 of theLimitedWarranty.

- Toshow proof oftherequiredmaintenance before requesting

warranty service in year 3 of the Limited Warranty.

What rights do you have?

The warranty gives you specific legal rights. You may also have other

rights which vary from state to state.

Owner’s Manual 4

About Your Refrigerator

- The refrigerator cooling system is under pressure. Do

not try to repair or to recharge a defective cooling

system. The cooling system contains sodium chro-

mate. 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 flame. Do not bend, drop, weld,

move, drill, puncture, or hit the cooling system.

- At regular intervals, make sure that the refrigerator flue

the burner, the vent areas, and the ventilation air

pathway between the vents are completely free from

any flammable material or blockage. After a period of

storage, it is especially important to check these areas

for any flammable material or blockage caused by

animals.

CAUTION:

- 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.

Storage Volume:

This refrigerator is made to store fresh and frozen foods and for

making ice.

N400 N510

Total capacity 4.50 cubic feet 5.50 cubic feet

Freezer capacity .81 cubic feet .81 cubic feet

Food compartment capacity 3.69 cubic feet 4.69 cubic feet

Leveling:

CAUTION: 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:

Ignite or 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 an authorized

Norcold Service Center.

WARNING:

- The storage of flammable materials behind or around

the refrigerator creates a fire hazard. Do not use the

area behind the refrigerator to store anything, espe-

cially flammable materials (gasoline, cleaning

supplies, etc.)

- Do not remove the round ground prong from the

refrigerator AC power cord. Do not use a two prong

adapter or extension cord on the AC power cord.

- A circuit overload can result in an electrical fire if the

wires and/or fuses are not the correct size. Either use

the wire and fuse sizes as writtten in the “Installation

Manual” or refer to your local codes or the applicable

RVIA Standards for the correct wire and fuse sizes.

- 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

qualified 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, connec-

tions, or the refrigerator components. Many liquids are

electrically conductive and can cause a shock hazard,

electrical shorts, and in some cases fire.

Safety Instructions

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 identifies the danger of

the hazard. Carefully read the descriptions of these signal

words to fully know their meanings. They are for your safety.

WARNING: This signal word means a hazard, which if

ignored, can cause dangerous personal injury, death, or

much property damage.

CAUTION: This signal word means a hazard, which if

ignored, can cause small personal injury or much

property damage.

Safety Awareness

Owner’s Manual 5

Control panel:

Thermostat...........................................................................1

Selector switch.....................................................................2

Piezo lighter .........................................................................3

Gas safety valve ................................................................... 4

Flame meter ........................................................................ 5

The thermostat [1] (See Art01280) changes the amount of

propane gas that goes to the burner. This acts as the tempera-

ture control of the refrigerator. Number 5 is the coldest tem-

perature setting.

When the outside air temperature is below 50° F, the refrigera-

tor may have a tendency to freeze food at the colder temperature

settings. To reduce the tendency to freeze food:

- Turn the thermostat to a warmer temperature setting.

- Keep the refrigerator full.

- Put foods that are more likely to freeze on the lower shelf.

The selector switch [2] changes the energy source of the

refrigerator between propane gas ( ), AC electric ( ), DC

electric ( ), and OFF ( ).

The gas safety valve [3] is built into the control panel. As long as

a flame is present, the valve is open and allows propane gas to

flow into the burner. Any loss of flame (empty propane gas tank,

blow out, etc.) closes the safety valve and stops the flow of

propane gas.

The piezo igniter [4] makes a spark which ignites the flame in

the burner.

The flame meter [5] shows if a flame is present in the burner.

Operating the Refrigerator Controls

(N400 models)

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 fins:

- 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.

Flip-up shelf:

The flip-up shelf supplies a space to store tall bottles. To use

the flip-up shelf, lift the center of the shelf and fold it up against

the inside wall of the refrigerator.

DoorBins:

You may put the door bins [1] of the fresh food compartment in a

location that best meets your need (See Art01114). To remove

the bins, lift them over the locator and pull them forward. To

install the bins, push them onto the locator.

NOTE: Do not wash the door bins in a dishwasher. The door

bins are not dishwasher safe.

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.

NOTE: Do not put other items on the ice tray while the water is

freezing. The water freezes more rapidly if the thermo-

stat is at the coldest temperature setting.

Door latch for travel and storage:

During travel, the door latch prevents the door from opening.

There are no chains, slides, or any devices that you must

engage.

During storage, the door latch prevents the door from com-

pletely closing. Use it to prevent odors when the refrigerator is

shut down for a long period of time.

To use the door latch for storage (See Art00979):

- Open the door just so the door latch [1] is between the ribs

[2] of the latch plate [3].

Temperature control system (N510 models):

Although the refrigerator is not frost -free, it is made to limit frost

on the cooling fins. At regular intervals, the temperature control

system automatically melts most of the frost from the cooling

fins. The water from the cooling fins 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.

Owner’s Manual 6

Ignition - propane gas operation:

1. Open the valve at the propane gas storage tank.

2. Turn the thermostat [1] to the 5 position.

3. Turn the selector switch [2] to the propane gas position ( ).

4. Push and hold in the safety valve [4] and push in the igniter

[3] several times in rapid succession, for about five seconds:

WARNING: Do not hold in the safety valve for more than

30 seconds. If there is no flame in this time, wait at least

five minutes before you try ignition again. If you continue

to hold in the safety valve, gas will collect in the burner

area. This could cause a fire or explosion and result in

dangerous personal injury or death.

- When a flame is present and the flame meter [5] moves into

the green area, wait about five seconds and release the

safetyvalve.

- If the flame meter does not move into the green area, do

this step again.

5. Turn the thermostat to the temperature setting that you wish.

Do a test of the gas safety valve:

With an established flame in GAS mode:

1. Close the manual gas shutoff valve [2] of the refrigerator

(SeeArt00975].

2. After the flame is extinguished, you should hear a sharp

“click” sound within three minutes.

NOTE: The gas safety valve should close with a sharp “click“

sound.

3. Open the manual gas shutoff valve of the refrigerator.

4. Without pushing in the gas control, push the igniter several

times rapidly in succession. The burner flame should not

ignite. This means that the gas safety valve is working

correctly.

Start up - AC operation:

- Make sure that 120 volts AC is available.

- Turn the selector switch to the AC position ( ).

- Turn the thermostat to the temperature setting that you

wish.

Start up - DC operation (3-way model N400.3):

- Make sure that 12 volts DC is available.

- Turn the selector switch to the DC position ( ).

Shut down:

- Turn the selector switch to the OFF position ( ).

Operating the Refrigerator Controls

(N510 models )

Control panel:

The refrigerator control panel (see Art10562) is above the

refrigerator door. A 12 volt DC power supply is necessary for the

control functions of the refrigerator to operate. The refrigerator

receives DC power from the 12 volt system of the vehicle; either

an auxiliary battery, a converter, or the vehicle engine battery.

The ON / OFF button [1] starts and shuts down the refrigerator:

- To turn on the refrigerator, push and release the ON / OFF

button.

- To turn off the refrigerator, push the ON / OFF button for two

seconds and then release.

Owner’s Manual 7

The TEMP SET button [2] controls the temperature adjustment

of the freezer and the fresh food compartment. The temperature

adjustment that you select does not change if the mode of

operation of the refrigerator changes.

- Push the TEMP SET button and the temperature setting “1-

9” appears in the center display [3].

- Push and hold the TEMP SET button and the temperature

setting changes.

- When the desired temperature setting shows, release

the TEMP SET button.

- The temperature setting shows for ten seconds and

then the current operation mode of the refrigerator

shows.

- The number “9” is the coldest temperature setting.

The MODE button [4] controls the operation mode of the

refrigerator.

- Push and hold the MODE button and a light bar shows in

the center display beside each of the four operating modes

of the refrigerator, one at a time.

- There is one automatic mode of operation and two

manual modes of operation.

NOTE: On model N510.3, there are three manual modes

of operstion.

- When the light bar shows beside the mode of opera-

tion that you choose, release the MODE button to

operate the refrigerator in that mode.

Automatic mode operation:

When the refrigerator is in AUTO mode, it automatically uses the

most efficient energy source that is available for operation.

During operation, if a more efficient energy source becomes

available, the refrigerator controls change from the current

energy source to the more efficient energy source as follows:

- The first choice is AC operation if 120 volts AC is available to

the refrigerator.

- The second choice is propane gas operation if 120 volts AC

is not available to the refrigerator.

- The third choice is DC operation (on model N510.3 only) if

neither 120 volts AC nor propane gas is available to the

refrigerator.

Removing air from the propane gas supply lines:

For safety reasons, the burner is made to ignite on propane gas

within a specified amount of time. When starting the refrigerator

for the first time, after storage, or after replacing propane gas

tank, the propane gas supply lines can have air in them. Due to

the air in the gas supply lines, the burner may not ignite on

propane gas within the specified amount of time.

To remove the air from the propane gas supply lines:

- Make sure that all of the gas valves are open.

- Push the ON / OFF button to turn the refrigerator on.

- Push and hold the MODE button until the light bar beside

LP GAS shows.

- This means that the refrigerator is operating on

propane gas.

- If the air in the propane gas supply lines prevents the

burner from ignition on propane gas, the fault code “F”

will appear in the center display.

- Push the MODE button and the refrigerator will start a

30 second trial for ignition.

- During the 30 second trial for ignition, the refrigera-

tor controls open the gas safety valve and the

igniter sparks.

- After 30 seconds, the refrigerator controls closes

the gas safety valve and the igniter stops sparking.

- When the light bar beside the LP GAS [6] shows and no

fault code remains, this means that the refrigerator is

operating on propane gas.

- At this time, all of the air is removed from the propane

gas supply lines and you may select AUTO mode of

operation if you wish.

- Depending on how much air may be in the propane gas

supply lines, you may need to repeat the 30 second trial for

ignition two or three times.

- If the burner does not ignite on propane gas after two or

three attempts, stop and consult your local dealer or an

authorized Norcold Service Center.

Set the controls to automatic mode operation:

- Push the ON / OFF button to turn the refrigerator on.

- Push and hold the MODE button until the light bar shows

beside AUTO [3] and then release.

Owner’s Manual 8

- If 120 volts AC is available to the refrigerator:

- The light bar beside AC [4] also shows in the center

display.

- After ten seconds, the light bar beside AC goes off and

only the light bar beside AUTO remains.

- This means that the refrigerator is operating on AC

electric.

- If 120 volts AC is not available to the refrigerator:

- The light bar beside AC [4] also shows in the center

display.

- After a few seconds, the light bar beside AC goes off

and the light bar beside LP GAS [6] shows.

- After 10 seconds, the light bar beside LP GAS goes off

and only the light bar beside AUTO remains.

- This means that the refrigerator is operating on

propane gas.

- On model N510 only, if neither 120 volts AC nor propane

gas is available to the refrigerator:

- The fault code “F” shows in the center display.

- On model N510.3 only, if neither 120 volts AC nor propane

gas is available to the refrigerator:

- The refrigerator control will automatically change to DC

electric operation.

NOTE: DC electric operation is less efficient than AC

electric and propane gas. Use DC electric

operation only to maintain the refrigerator

temperature while in transit and if the other

energy sources are not available. Do not use

DC electric to initially decrease the temperature

of the refrigerator.

If an energy source is available to the refrigerator, but is not

operating correctly:

- A fault code shows in the center display.

- The refrigerator controls try to change to a less efficient

energy source.

- If a less efficient energy source is not available:

- A fault code shows in the center display.

- Refer to the “Fault Codes” section of this manual.

Set the controls to manual mode operation:

- Push the ON / OFF button to turn the refrigerator on.

- Push and hold the MODE button until the light bar shows

beside AC [4] and then release.

- This means that the refrigerator is operating on AC

electric.

- Push and hold the MODE button until the light bar shows

beside LP GAS [6] and then release.

- This means that the refrigerator is operating on

propane gas.

- Push and hold the MODE button until the light bar shows

beside DC [8] and then release.

- This means that the refrigerator is operating on AC

electric.

If the energy source is interrupted:

- A fault code shows in the center display.

- Refer to the “Fault Codes” section of this manual.

Cooling unit sensing:

The controls have the ability to sense the operation of the

cooling unit. If the controls sense that the cooling unit has

stopped cooling:

- The heat sources to the cooling unit are turned off and are

locked out by the controls.

- A fault code “n” shows in the Center display.

You can reset the controls and remove this fault code one time.

To reset the controls, shut off and then start the refrigerator.

- To turn off the refrigerator, push the ON / OFF button for two

seconds and then release.

- To turn on the refrigerator, push and release the ON / OFF

button.

If you reset the controls and the fault occurs again before the

refrigerator completes a full cooling cycle:

- The heat sources to the cooling unit are turned off and are

locked out.

- A fault code “n” shows in the Center display.

- This time you can not reset the fault. Have the refrigerator

serviced by your dealer or a Norcold authorized Service

Center as soon as possible.

Owner’s Manual 9

This refrigerator is made to operate on DC power while your

vehicle is “in transit” and AC power or propane gas sources are

not available. Operate the refrigerator on DC power only when

the vehicle engine is running.

For the refrigerator to operate correctly on DC power, the battery

must be maintained in a fully charged condition.

For the battery to be fully charged at all times during refrigerator

operation on DC, the vehicle engine must be running and the

battery charging system must be in good operating condition.

DC Operation Precautions (N400.3 and

N510.3 models)

Backup operating system:

This refrigerator has a backup operating system. The backup

operating system allows the refigerator 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.

- When you push the TEMP SET button, the temperature

setting flashes in the center display for ten seconds.

- After the temperature setting flashes, the mode of

operation appears in the center dispaly.

- The backup operating system can overfreeze 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.

NOTE: If you open the door(s) too often, the tempera-

tures inside the freezer and fresh food compart-

ment do not become stable. Allow the refrigera-

tor to operate for about one hour after each

adjustment change before you examine the

contents. The number “9” is the coldest

temperature setting.

- If the temperature is too warm, push and hold the

TEMP SET button to raise the temperature setting

by one number.

- If the temperature is too cold, push and hold the

TEMP SET button to lower the temperature setting

by one number.

- Have the refrigerator serviced by your dealer or an Norcold

authorized Service Center as soon as possible.

DC operation is intended only to maintain the temperature of

the refrigerator and its contents when they are already cool.

The DC operation is not intended for the initial start up and

cooling of the refrigerator. Always use either the AC operation or

propane gas operation to initially start up and cool the refrigera-

tor. The refrigerator must be cooled and the temperature must

be steady before you operate the refrigerator on DC.

Keep in mind the following guidelines for DC operation of the

refrigerator:

- Use DC operation of the refrigerator while the vehicle is in

transit.

- Do not use DC operation until the refrigerator and its

contents are completely cooled.

- Only use DC operation if the vehicle battery and battery

charging system are in good operating condition.

DC Operation Guidelines (N400.3, and N510.3

models)

Keep in mind the following electrical precautions for DC

operation of the refrigerator:

- Good battery condition is necessary for correct DC opera-

tion.

- The capacity of the battery charging system must be more

than what is necessary for the refrigerator and other DC

appliances.

- While the vehicle engine is running, make sure the voltage

of the DC power supply leads at the refrigerator is more

than 11.5 VDC.

Effects of High Altitude on Propane Gas

Operation

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.

Owner’s Manual 10

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.

NOTE: Do not use abrasive cleaners, chemicals, or

scouring pads because they can damage the

interior of the refrigerator.

- Wash the interior with a solution of liquid dish detergent

and warm water.

- Rinse with a solution of baking soda and clean water.

- Dry with a clean cloth.

- Put all food in the refrigerator.

Drip tray:

To remove and clean the drip tray:

- Locate the plastic clip that is around the wire shelf in front of

the drip tray.

Cleaning

Defrosting

Refrigerator Care Checklist

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 an authorized Norcold Service Center.

- Make sure the gas supply is propane gas only and not

butane or a butane mixture.

The cooling fins 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.

N510 models only:

Although the refrigerator is not frost -free, it is made to limit frost

on the cooling fins. At regular intervals, the temperature control

system automatically melts most of the frost from the cooling

fins. The water from the cooling fins 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.

N400 and N510 models:

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.

NOTE: 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.

- Put dry towels (etc.) inside the refrigerator and freezer to

absorb melted frost.

CAUTION: 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.

Owner’s Manual 11

Refrigerator Maintenance Checklist

Read and understand the following maintenance sections of

this manual.

NOTE: Norcold is not responsible for installation, adjustment,

alteration, service, or maintenance performed by

anyone other than a qualified RV dealer or an

authorized Norcold Service center.

Have a qualified RV dealer or an authorized Norcold Service

Center do these annual safety and maintenance checks:

- Examine the gas supply lines for leaks.

- Replace or repair if necessary.

- Make sure the propane gas pressure is 11 inches of water

column.

- Adjust if necessary.

- Make sure the combustion seal is complete and intact.

- Replace or repair it if necessary.

- Make sure the burner and the burner orifice are clean (See

Art00956).

- Clean if necessary.

- Make sure the electrode spark gap [3] is 1/8 - 3/16 inch

(See Art00955).

- Adjust if necessary.

- Make sure the AC voltage is 108 - 132 volts and the DC

voltage is 10.5 - 15.4 volts.

- Make sure the thermocouple tip is clean and secure.

- Make sure the area at the rear of the refrigerator is free of

any combustible materials, gasoline, and other flammable

vapors and liquids.

Refrigerator Storage

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 orifice, or the flue

area.

Door Sealing

If the door does not seal correctly, excess frost will collect inside

the refrigerator. Make sure the door seals correctly:

- Close the door on a piece of paper that is about the size

and thickness of a dollar bill (See Art00980).

- 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 is not sealing correctly:

- Make sure the screws of the hinges are tight.

- Make sure the door gasket does not touch the door

latch:

- If the door gasket touches the door latch,

loosen the screws of the door latch.

- Raise the door latch just so it does not touch

and tighten the screws of the door latch.

- Make sure the door latch holds the door closed

- Remove and save the screw that attaches the plastic clip to

the inside of the refrigerator cabinet.

- Pull the self forward to remove from the refrigerator

- Make sure that the drip tray is empty of water.

- Pull the drain tube plug out from the inside of the drip tray

and out of the drain hose.

- Pull the drip tray forward to remove from the slots in the

refrigerator cabinet.

- Clean the drip tray.

- Put the drain tube plug down into the drip tray and push the

drip tray back into the original position.

- Push the drain hose back onto the drain tube plug.

- Put the wire shelf and plastic clip back in the original

position.

- Attach the plastic clip with the screw.

Owner’s Manual 12

Remove the Refrigerator

NOTE: Your dealer or an authorized Norcold Service Center

must do this procedure.

CAUTION: 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).

WARNING: To avoid possible propane gas leaks,

always use two wrenches to loosen and tighten the gas

supply line at the refrigerator’s manual shut off valve.

2. Open the lower intake vent and remove the gas supply line

from the manual shut off valve of the refrigerator.

3. Remove the AC power cord from the receptacle.

Refrigerator Maintenance

Gas flame appearance:

While in propane gas operation, examine the appearance of the

gas flame:

- On N400 models, turn the thermostat to the 5 position.

- On N510 models, push and hold temperature setting button

until the “9” shows and then release.

- Open the lower intake vent.

CAUTION: The burner box cover can be hot. Wear

gloves to avoid burns.

- Open the burner box door [3] and look at the gas flame [1]

(See Art00955 and Art00975).

- The flame should be:

- a darker blue color on the inside of the flame and

a lighter blue color on the outside of the flame.

- a constant shape without flickering.

- Contact your dealer or Norcold authorized service

center if the flame is:

- yellow

- flickering or changing shape.

- Make sure the flame does not touch the inside of the

flue tube [2].

- If the flame touches the inside of the flue tube, contact

your dealer or an authorized Norcold Service Center.

- Close the burner box door.

Remove and clean the burner orifice:

NOTE: Your dealer or an authorized Norcold Service Center

must do this procedure.

To remove and clean the burner orifice:

- Close the valve at the propane gas tank(s).

- Close the manual shut off valve of the refrigerator.

- Shut down the refrigerator..

- Open the lower intake vent.

CAUTION: The burner box cover can be hot. Wear

gloves to avoid burns.

- Remove the burner box cover by removing one screw.

WARNING: To avoid possible propane gas leaks,

always use two wrenches to loosen and tighten the

gas supply line at the refrigerator’s manual shut off

valve.

- Remove the flare nut from the orifice assembly [1] (See

Art00956).

- Remove the orifice assembly from the burner [2].

WARNING: Do not try to remove the orifice [3] from the

orifice adapter [4] when cleaning. Removal will

damage the orifice and seal of the orifice 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 orifice with a

pin or other objects.

- Clean the orifice assembly with air pressure and alcohol

only.

- Using a wrench, assemble the orifice assembly to the

burner.

- Assemble the flare nut to the orifice assembly.

- Tighten the flare nut by hand.

- Hold the orifice assembly securely and, using a

wrench, tighten the flare nut 1/4 revolution only.

- Examine all of the connections for gas leaks.

Owner’s Manual 13

NOTE: Your dealer or an authorized Norcold Service Center

must do this procedure.

WARNING: Make sure the combustion seal is not

broken, is completely around the refrigerator mounting

flanges, and is between the mounting flanges 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. Remove the door from the refrigerator.

3. Put the screws though the mounting flanges and into the

wall.

4. Attach the door to the refrigerator

CAUTION: 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.

5. Open the lower intake vent and put the screws through

refrigerator and into the floor.

WARNING: To avoid possible propane gas leaks,

always use two wrenches to loosen and tighten the gas

supply line at the refrigerator’s manual shut off valve.

6. Attach the gas supply line to the manual shut off valve of the

refrigerator.

Reinstall the Refrigerator

The parts of the wiring pictorial are (Art01326):

1 .............................................................120VAC Power cord

2 ..................................................................... Terminal block

3 ...........................................................................3 Amp fuse

4 .................................................................... Selector switch

5 ..................................................................... Thermocouple

6 ..............................................Thermostat / gas safety valve

7 ................................................... Thermocouple interrupter

8 ........................................................................ Flame meter

9 .............................................................................AC heater

10 ........................... -12 VDC Power supply (model N400.3)

11........................... +12 VDC Power supply (model N400.3)

12 ............................................25 Amp fuse (model N400.3)

13 ............................................... DC heater (model N400.3)

Wiring Pictorial

(N400 models only)

Replacement Parts

You may purchase replacement parts through your local RV

dealer or an authorized Norcold Service Center.

4. Remove the DC wiring from the refrigerator:

- Remove the DC wiring from the battery or the converter of

the vehicle.

- Put a mark on the DC wires so you can put them back in the

correct location.

- Remove the DC wires from the refrigerator.

5. Remove the screws which fasten the refrigerator to the floor.

6. Remove the door from the refrigerator.

7. Remove the screws which fasten the refrigerator to the wall.

8. Remove the refrigerator from the opening.

9. Attach the door to the refrigerator.

7. Open the valve at the propane gas tank(s).

WARNING: Do not allow the leak checking solution to

touch the electrical components. Many liquids are

electrically conductive and can cause a shock

hazard,electrical shorts, and in some cases fire.

8. Examine the gas supply line for leaks.

9. Connect the DC wiring to the refrigerator:

- Install the DC fuse or connect the DC wiring to the battery or

the converter.

- Connect the DC wires from the refrigerator.

10. Connect the AC power cord to the receptacle.

Owner’s Manual 14

Wiring Pictorial

(N510 models only)

The parts of the wiring pictorial are (Art01576):

1 ............................................................................... 120 VAC

2 ........................................................ -12 VDC Power supply

3 ....................................................... +12 VDC Power supply

4 ........................................................................ Power board

5 ...........................................................................5 Amp fuse

6 .............................................. 30 Amp fuse (model N510.3)

7 .............................................................................AC heater

8 ................................................. DC heater (model N510.3)

9 ...................................................................Gas safety valve

10 ................................................................. Spark electrode

11......................................................... Display board overlay

12 .................................................................... Display board

13 ......................................................... Temperature sensor

14 .................................................................... Fan (optional)

15 ........................................................Thermostat (optional)

Wiring Diagram

(N510 models only)

The parts of the wiring diagram are (See Art01575):