Dometic DM2672 User manual

REFRIGERATION
REFRIGERATOR
WARNING: Improper installation, adjustment,
alteration, service or maintenance can
cause injury or property damage. Refer to
this manual. For assistance or additional
information consult a qualified installer,
service agency or the gas supplier.
FIRE OR EXPLOSION HAZARD
If you smell gas:
1. Open windows.
2. Do not attempt to light appliance.
3. Do not touch electrical switches.
4. Extinguish any open flame.
5. Shut off fuel supply.
6. Evacuate immediately and call emergency
services.
Failure to follow these instructions could result
in fire or explosion, which could cause property
damage, personal injury, or death.
DM2672, DM2872, DM2682, DM2882, DM2683
EN DM Refrigerators
Operating Manual

2
EN
Refrigerator
NORTH AMERICAN ADDRESS INFORMATION
USA & CANADA
Service Office
Dometic Corporation
1120 North Main Street
Elkhart, IN 46514
Service Center & Dealer Locations
Visit: www.dometic.com
REVISION A | Form No. 3317001.000 7/18 | ©2018 Dometic Corporation
Read these instructions carefully. These instructions MUST stay with this product.
CONTENTS
1 Explanation of symbols and safety instructions ................................................ 3
2 Intended use ........................................................................... 4
3 Refrigerator overview .................................................................... 4
4 Operation ............................................................................. 8
5 Care and maintenance ...................................................................11
6 Troubleshooting ....................................................................... 14
7 Disposal.............................................................................. 15

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1 EXPLANATION OF SYMBOLS AND SAFETY INSTRUCTIONS
This manual has safety information and instructions to help you eliminate or reduce the risk of accidents
and injuries.
1.1 Recognize safety information
This is the safety alert symbol. It is used to alert you to potential physical injury hazards. Obey all safety
messages that follow this symbol to avoid possible injury or death.
1.2 Understand signal words
A signal word will identify safety messages and property damage messages, and will indicate the degree or level
of hazard seriousness.
indicates a hazardous situation that, if not avoided, could result in death or serious injury.
indicates a hazardous situation that, if not avoided, could result in minor or moderate injury.
is used to address practices not related to physical injury.
Iindicates additional information that is not related to physical injury.
1.3 Supplemental directives
Read and follow all safety information and instructions to avoid possible injury or death.
Read and understand these instructions before use / maintenance of this product.
Incorrect operation of this product can lead to serious injury or death.
The installation must comply with all applicable local or national codes, including the latest edition of the
following standards:
This appliance is certified under the latest edition of ANSI Z21.19, and CSA 1.4 Refrigerators using gas fuel. The
installation must conform with local codes, or in absence of local codes, the following standards as applicable.
U.S.A.
• ANSI/NFPA70, National Electrical Code (NEC)
• ANSI/NFPA 1192, Recreational Vehicles Code
• Title 24 CFR, Part 3280, Manufactured Home
Construction and Safety Standard
• National Fuel Gas Code, ANSI Z223.1/NFPA 54
Canada
• CSA C22.1, Parts l & ll, Canadian Electrical Code
• CSA Z240 RV Series, Recreational Vehicles
• CSA Z240.4, Gas-Equipped Recreational Vehicles
and Mobile Housing
• CSA B149.1, Natural Gas and Propane Installation
Code CERTIFICATION
1.4 General safety messages
Failure to obey the following warnings could result in death or serious injury:
• This product must be serviced by a qualified service technician.
• Do not modify this product in any way. Modification can be extremely hazardous.
• Disconnect product from power supply (if applicable), and do not operate product when cleaning or
maintaining product.
• Do not allow anyone (including children) with reduced physical, sensory or mental capabilities, or lack
of experience and knowledge, to use this product unless they have been given supervision or instruction
(concerning use of this product) by a person responsible for their safety.
• Do not allow children to play with product or with fixed controls (if applicable).
• ABSORPTION-COOLING SYSTEMS: FIRE, BURN, OR INHALATION HAZARD. Do not fracture or puncture
cooling unit. The cooling unit is under pressure and contains ammonia, sodium chromate, and other

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chemicals. Repeated or prolonged exposure to sodium chromate could cause organ damage or cancer.
Exposure to a high concentration of ammonia refrigerant could cause pulmonary edema (fluid in lungs);
chemical burns to eyes, lungs, and skin; and could cause a fire (when exposed to open flame).
• COMPRESSOR-COOLING SYSTEMS: FIRE, FROSTBITE, OR INHALATION HAZARD. Do not fracture or
puncture cooling unit. The cooling unit is under pressure and contains tetrafluoroethane refrigerant, and may
contain other chemicals. Contact with liquid refrigerant could cause irritation or frostbite to eyes and skin.
Exposure to a high concentration of refrigerant could cause cardiac arrhythmia (irregular heartbeat). A high
concentration of refrigerant could cause a fire (when exposed to open flame).
• FIRE OR INHALATION HAZARD. If the refrigerator stops working and/or it emits an ammonia smell,
immediately turn the refrigerator off (if it is safe to do so), leave the vicinity, and contact a qualified service
center.
• CARBON MONOXIDE HAZARD. This product can produce carbon monoxide, which has no odor and can be
life-threatening. The burner and flue system must be kept clean.
• FIRE OR EXPLOSION HAZARD:
– Do not store or use gasoline, oil or gasoline-soaked rags, or other flammable vapors and liquids, in the
service area behind the refrigerator or in the vicinity of this or any other gas appliance.
– Before refueling or parking near a gasoline pump, make sure all Liquid Propane (LP) gas appliances (vented
to the outside of the RV) are shut off. Otherwise, fumes from gasoline pumps could come into contact with
an LP gas appliance burner flame and ignite.
• PRESSURE HAZARD. Do not place carbonated liquids, glass containers, or sealed bottles in the freezer.
Liquids expand when frozen and could cause the container to explode.
Failure to obey the following cautions could result in injury:
• FROSTBITE OR FROSTNIP HAZARD. Do not touch cold surfaces (or stored items) in freezer compartment with
damp or wet skin. Skin could stick to cold surfaces and freeze.
• BURN HAZARD. Cooling unit piping may be hot. Allow time to cool before touching.
2 INTENDED USE
The DM and RM refrigerators are designed and intended for use only inside a recreational vehicle (hereinafter
referred to as “RV”) for which it is supplied. Use the instructions to ensure correct operation of the refrigerator.
Dometic Corporation accepts no liability for damage in the following cases:
• Faulty assembly or connection.
• Damage to the product resulting from mechanical influences and excess voltage.
• Alterations to the product without the expressed permission from Dometic.
• Use for purposes other than those described in the operating manual.
Dometic Corporation reserves the right to modify appearances and specifications without notice.
3 REFRIGERATOR OVERVIEW
IAbsorption cooling systems:
➤Adjust the thermostat to the coldest temperature setting when turning on the refrigerator. The cooling
cycle may require an extended running time before the cooling effect is observed.
➤Turn off the refrigerator when it is not in use for an extended period of time.
IAutomatic energy selector system:
• The refrigerator can automatically select the most suitable energy source available.
• The system can be user-set to be fully automatic (AUTO mode turned on), or to operate on LP gas only (AUTO
mode turned off).

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• The system can be manually set to DC mode on three-way models. DC mode overrides all other operating
modes. The refrigerator controls will work down to 9.6 VDC.
3.1 Understanding the control panel
DM2672, DM2872
1
ON/OFF Button
Auto Mode
Indicator Lamp
Check
Indicator Lamp
Gas Button
DM2682, DM2882
2
ON/OFF Button
Auto/Gas Mode
Selector Button
Auto Mode
Indicator Lamp
Temperature
Indicator Lamps
Check
Indicator Lamp
Gas Mode
Indicator Lamp
AC Mode
Indicator Lamp
Temperature
Selector Button
DM2683
3
ON/OFF Button
DC Mode
Indicator Lamp
DC Mode
Selector Button
Auto/Gas Mode
Selector Button
Auto Mode
Indicator Lamp
Temperature
Indicator Lamps
Check
Indicator Lamp
Gas Mode
Indicator Lamp
AC Mode
Indicator Lamp
Temperature
Selector Button
Button Function
ON/OFF Main power control
AUTO/GAS Selects mode: auto or gas
Temperature Selects temperature setting
DC Selects DC mode
Lamp Function
AUTO AUTO mode is activated
CHECK Check burner status
GAS GAS mode is activated
Temperature Indicates temperature setting
AC AC mode is activated
DC DC mode is activated

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3.2 Understanding the modes of operation
Auto mode
• The AUTO mode indicator lamp is illuminated.
• The control system will automatically select between AC and LP gas operation.
• AC has priority over LP gas. If AC is unavailable, the system will switch to LP gas. When AC is available, the
system will switch back to AC.
DC mode
IDM2683 only.
• When operating in DC mode, all other indicator lamps will be off.
➤Press the DC selector button to turn off the DC mode and select another mode.
➤Switch to AUTO or GAS mode when there is no charging of the house battery. Running the refrigerator on 12
VDC will quickly drain the battery.
Gas mode
• This mode provides LP gas only.
• The control system activates the ignition system and attempts to light the burner for about 45 seconds.
• DM2672, DM2872: When operating in GAS mode, the AUTO mode lamp will be off.
• If the burner fails to ignite, the CHECK indicator lamp will blink and beep.
➤Restart the refrigerator if the CHECK indicator lamp is blinking and beeping. The CHECK indicator lamp and
buzzer will not turn off until the refrigerator is restarted, even if AC becomes available.
Limp mode
• If a major operating component fails, the control system will continue operating the cooling system.
IDM2672, DM2872:
• The control will run the cooling unit continuously if it cannot read the temperature sensor.
• The refrigerator will continue operating in this mode indefinitely, or until a new sensor is installed and the
system is reset.
IDM2682, DM2683, DM2882:
• If the display module becomes nonfunctional:
– The control system reverts to full automatic operation.
– The temperature setting is maintained at the middle position.
– The power module will continue to re-establish operation of the display module.
• If the temperature sensor fails:
– The control system operates on the energy source selected on the control panel.
– The cooling unit runs continuously.
– The refrigerator will continue to operate in this mode indefinitely, or until a new sensor is installed and the
system is reset.

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3.3 Understanding the storage compartments
Food storage
IRead before proceeding:
• The food storage compartment should remain closed to maintain the required temperature.
• The coldest locations in the refrigerator are under the cooling fins and at the bottom of the refrigerator.
• The warmest locations in the refrigerator are on the upper door shelves.
➤Cover foods to maintain freshness.
➤Allow the refrigerator to cool before placing food inside.
➤Allow hot drinks or food to cool to room temperature before placing them inside the refrigerator.
➤Arrange foods in the refrigerator to allow for free air circulation. Do not overstock the refrigerator.
➤Ensure that the refrigerator door is not le open longer than necessary. This will reduce frost formation and
maintain the efficiency of the refrigerator
Frozen food storage
IThe frozen food storage compartment is not designed for deep- or quick-freezing food.
➤Cover foods to prevent them from drying out.
➤Place quick frozen fruits and ice cream at the bottom of the aluminum liner.
➤Wipe excess moisture off items before storing them in the frozen food storage compartment. This will prevent
frost buildup.
➤Allow meat and fish to precool in the refrigerator before storing it in the frozen food storage compartment.
Model Total Refrigerated
Volume (cu. )
DM2672, DM2682, DM2683 6
DM2872, DM2882 8
Ice Cubes
IDM2672, DM2872 are controlled by factory preset temperature settings.
➤Place ice cube trays in direct contact with the freezer compartment.
DM2682, DM2683, DM2882:
➤Set the thermostat to the highest setting to make ice more rapidly.
➤Return the thermostat to the normal setting once ice is formed to prevent the refrigerator from becoming
too cold.

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4 OPERATION
IRead before proceeding:
• Keeping the refrigerator level:
– The refrigerator must be kept level when the RV is parked for several hours or more.
– Loss of cooling could occur if the refrigerator operates in a noticeable out-of-level position for several
hours.
– It is not critical for the refrigerator to be level when traveling.
• Operating the refrigerator at high altitudes:
– When the refrigerator is operating on LP gas, reduced cooling performance and burner outage may occur
at elevations higher than 5,500 feet above sea level.
➤Operate the refrigerator on electric power at altitudes higher than 5,500 feet.
• Operating the refrigerator in extreme cold:
– Refrigerator performance may be reduced in sub-zero temperatures. This temporary condition is normal
for absorption refrigerators.
IIce maker models only: the refrigerator is equipped with a heater tape wrapped around the water
solenoid valve and outlet water tube. During cold weather operation below 32 °F (0 °C), the automatic
temperature switch will turn the heater tape on automatically.
4.1 Starting the refrigerator
FIRE HAZARD. Make sure there are no obstructions (blockage) between burner jet and burner
tube BEFORE lighting LP gas burner. Failure to obey this warning could result in death or serious injury.
➤Check that all the manual gas valves are in the ON position.
➤Ensure that a continuous 12 VDC supply is available for the electronic control to function.
➤Press the ON/OFF button.
➤Select the operation mode:
– AUTO mode (AC and Gas): Press the AUTO/GAS mode selector button (if not already on). The
illuminated lamp indicates the selected mode. If the CHECK indicator lamp is blinking and beeping, refer
to “4.2 Reigniting the burner” on page 8.
– GAS mode (LP gas operation only): Press the AUTO/GAS mode selector button to turn off the AUTO
mode (if not already off). Within 45 seconds, the burner should ignite and operate normally.
– DC mode (three-way models only): Press the DC mode indicator button. The DC lamp will be turned
on. To select AUTO or GAS mode, turn off the DC mode by pressing the DC mode selector button. The
DC lamp will then turn off.
IRefer to section “3.1 Understanding the control panel” on page 5.
4.2 Reigniting the burner
➤If the CHECK indicator lamp is blinking and beeping, turn the refrigerator OFF for five seconds and then ON
again.
IRead before proceeding:
• If 120 VAC becomes available while the CHECK indicator lamp is blinking and beeping, the CHECK lamp will
remain blinking and beeping until the refrigerator is restarted. The refrigerator will operate on 120 VAC during
this time.
• Refer to section “3.1 Understanding the control panel” on page 5.

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4.3 Removing and replacing the shelves
4
Screwdriver Shelf Lock
Shelf
➤Remove the shelf locks by inserting the tip of a flat-
bladed screwdriver into the slot in the locks.
➤Turn the screwdriver counterclockwise and remove
the shelf locks from the wire shelf.
➤Slide the shelf to the le until the plastic caps
disengage.
➤Tilt the shelf to one side at an angle while pulling
forward.
5
Shelf
Cap
➤Reposition the shelf in the desired location.
➤Insert the ends of the wire shelf on the le-hand
side and slide the shelf into the holes on the right-
hand side.
➤Slide the plastic caps into the holes of the wall.
➤Snap the shelf locks back onto the wire shelf.
4.4 Adjusting the thermostat
IDM2682, DM2683, DM2882: The thermostat controls both the gas and electric operation. Aer the
initial start-up, adjust the thermostat to the desired temperature setting.
➤Press the temperature selector button until the lamp at the desired setting is illuminated.
IDM2672, DM2872: The temperature is controlled by a factory-preset temperature setting.
4.5 Using the ice maker (if equipped)
IRead before proceeding:
• The first few cycles may produce small ice cubes due to air trapped in the water lines.
• If ice cubes remain too small or stick together, refer to “Adjusting the ice cube size” on page 10.
➤Discard the first container of ice cubes if the water system has been winterized or out of use for several weeks.

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Turning the ice maker on and off
6Ice Level
Bale Arm
➤Ensure that the refrigerator is connected to 120
VAC.
➤Open the valve supplying water to the refrigerator.
➤Keep the bale arm in the up (OFF) position until
water enters the ice maker.
➤Set the bale arm in the down (ON) position once
there is ice in the ice maker.
➤Raise the bale arm to the up (OFF) position about
1-1/2 hours before traveling, to allow the water in
the mold assembly to freeze and prevent water
from splashing out of the mold assembly.
IThe ice maker will automatically fill the mold
assembly and eject the ice cubes into the
storage bin until it is full.
Adjusting the ice cube size
7
Cover
Adjusting
Screw
IRead before proceeding:
• The water supply system must have a minimum
pressure of 15 pounds-per-square-inch gauge
(psig).
• A 1/4" diameter water line to the water valve must
be used at the rear of the refrigerator.
• The water line must have a manual shutoff valve in
an easily accessible location.
• The maximum water level is represented by a thin
line on the mold assembly. Do not allow the water
level to exceed this line.
➤Remove the protective cover from the ice maker by
inserting a flat-bladed screwdriver into the slot and
gently twisting the screwdriver.
➤Adjust the ice cube size by turning the adjusting
screw counterclockwise to increase the size of the
ice cubes, and clockwise to decrease the size of
the ice cubes.
IDo not turn the adjustment screw more than
one revolution at a time.
➤Place the protective cover back on the ice maker.
➤Allow the ice maker to cycle several times before
making further adjustments.
4.6 Turning off the refrigerator
Do not allow the refrigerator to run unattended when there is a risk of loss of electricity or fuel.
Food spoilage could occur.
➤Press the ON/OFF button on the control panel to the OFF position to shut off all power to the refrigerator.
IThe refrigerator’s control system will consume a few milliamps even aer it is turned off. If the RV is being
put into winter storage, put the RV batteries on a battery charger or turn off the RV’s main 12 VDC switch to
prevent the battery from discharging.
IRefer to section “3.1 Understanding the control panel” on page 5.