RECORD THIS INFORMATION FOR FUTURE
REFERENCE:
Model Number
Serial Number
Date Purchased
Retailer / Qualied Installer
DMH1072
HYBRID REFRIGERATOR
ABSORPTION COOLING SYSTEM
UPPER FOOD STORAGE COMPARTMENT
COMPRESSOR COOLING SYSTEM
LOWER FOOD STORAGE COMPARTMENT
(LOWER DRAWER)
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 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.
OPERATING
INSTRUCTIONS
REVISION C
Form No. 3315255.000 09/16
(French 3315256.000_C)
©2016 Dometic Corporation
LaGrange, IN 46761
Improper installation, adjustment, alteration, service or maintenance can cause injury or
property damage. Refer to this manual. For assistance or additional information consult
a qualied installer, service agency or the gas supplier.
SUFFOCATION AND ENTRAPMENT HAZARD.
Prior to disposal of refrigerator:
1. Remove fresh food and freezer doors.
2. Leave shelves and baskets in place to prevent children from easily climbing inside
refrigerator.
FIRE OR EXPLOSION HAZARD.
Do not store or use gasoline or other ammable vapors and liquids in the vicinity of this
or any other appliance.
Read these instructions carefully. These
instructions MUST stay with this product.
USA
SERVICE OFFICE
Dometic Corporation
1120 North Main Street
Elkhart, IN 46514
CANADA
Dometic Corporation
46 Zatonski, Unit 3
Brantford, ON N3T 5L8
CANADA
SERVICE CENTER &
DEALER LOCATIONS
Please Visit:
www.eDometic.com
INTRODUCTION
Thank you for purchasing your new Dometic refrigerator. This refrigerator (hereinafter referred to as “refrigerator,” or “product”) is designed and intended for use in recreational vehicles (hereinafter referred to as “RV,” or “RVs”). This refrigerator is
designed for the storage of fresh and frozen foods, as well as making ice.
Use these instructions to operate your refrigerator safely and correctly. Keep these instructions with your refrigerator for
future reference.
Dometic Corporation reserves the right to modify appearances and specications without notice.
TABLE OF CONTENTS
INTRODUCTION .................................................................................................................................................................... 2
DOCUMENT SYMBOLS ........................................................................................................................................................3
IMPORTANT SAFETY INSTRUCTIONS ................................................................................................................................ 3
A. Recognize Safety Information ...................................................................................................................................3
B. Understand Signal Words ..........................................................................................................................................3
C. Supplemental Directives ............................................................................................................................................3
D. General Safety Messages .........................................................................................................................................4
REFRIGERATOR OVERVIEW ...............................................................................................................................................5
A. Refrigerator Volume ...................................................................................................................................................5
B. Refrigerator Illustration ..............................................................................................................................................5
C. Absorption Cooling System .......................................................................................................................................6
D. Compressor Cooling System .....................................................................................................................................6
E. Keep Refrigerator Level .............................................................................................................................................6
F. Operating Refrigerator At High Altitude ..................................................................................................................... 6
G. Operating Refrigerator During Extreme Cold Weather .............................................................................................. 6
H. When Refrigerator Is Not In Use ............................................................................................................................... 6
CONTROLS ............................................................................................................................................................................7
A. Control Panel Buttons ................................................................................................................................................7
B. Modes Of Operation ..................................................................................................................................................9
C. Temperature (Thermostat) Control ............................................................................................................................9
START / STOP REFRIGERATOR ........................................................................................................................................10
A. Purge LP Gas Lines ................................................................................................................................................10
B. Turn Refrigerator On................................................................................................................................................10
C. Turn Refrigerator Off ................................................................................................................................................ 11
FOOD COMPARTMENTS .................................................................................................................................................... 11
A. Food Compartment Guidelines ................................................................................................................................ 11
B. Shelving ................................................................................................................................................................... 12
C. Baskets .................................................................................................................................................................... 12
D. Lower Food Compartment Drawer .......................................................................................................................... 13
PRODUCT CARE .................................................................................................................................................................13
A. Defrost Food Compartment(s) ................................................................................................................................. 13
B. Clean Food Compartment(s) ................................................................................................................................... 14
C. Airing Position (Store Refrigerator) .......................................................................................................................... 14
PRODUCT MAINTENANCE .................................................................................................................................................15
A. Replace Fuses ......................................................................................................................................................... 15
B. Clean Burner Assembly ........................................................................................................................................... 16
C. Clean Service Area Enclosure ................................................................................................................................. 17
D. Inspect LP Gas Connections ................................................................................................................................... 17
E. Test Control System ................................................................................................................................................17
F. Product Removal / Disposal ....................................................................................................................................17
2
TABLE OF CONTENTS
APPENDIX A: TROUBLESHOOTING .................................................................................................................................. 18
A. General Symptoms .................................................................................................................................................. 18
B. Cooling Performance Symptoms ............................................................................................................................. 19
C. Absorption System Ignition Error ............................................................................................................................. 20
D. Compressor System Error Codes ............................................................................................................................ 20
APPENDIX B: SPARE PARTS .............................................................................................................................................21
A. Model DMH1072 Spare Parts ..................................................................................................................................21
APPENDIX C: EQUIPMENT REAR VIEW ...........................................................................................................................22
A. Model DMH1072 Rear View ....................................................................................................................................22
APPENDIX D: SCHEMATIC ................................................................................................................................................. 23
A. Model DMH1072 Schematic .................................................................................................................................... 23
APPENDIX E: CONSUMER SUPPORT ...............................................................................................................................24
APPENDIX F: DOMETIC WARRANTY ................................................................................................................................25
APPENDIX G: MAINTENANCE SCHEDULE ....................................................................................................................... 26
REGISTRATION CARD ........................................................................................................................................................ 27
A. Protect Your New Investment .................................................................................................................................. 27
DOCUMENT SYMBOLS
Indicates additional information that is NOT related
to physical injury.
IMPORTANT SAFETY INSTRUCTIONS
This manual has safety information and instructions to help
you eliminate or reduce the risk of accidents and injuries.
A. 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.
B. 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.
C. Supplemental Directives
Read and follow all safety information and
instructions to avoid possible injury or death.
Read and understand these instructions before [installing / using / servicing / performing
maintenance on] this product.
3
Indicates step-by-step instructions.
Incorrect [installation / operation / servicing /
maintaining] of this product can lead to serious injury. Follow all instructions.
The installation MUST comply with all applicable local and national codes, including
the latest edition of the following standards:
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 Electri-
cal 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
IMPORTANT SAFETY INSTRUCTIONS
D. General Safety Messages
Failure to obey the following warnings could result in death or serious injury:
● This product MUST be [installed / serviced] by a
qualied service technician.
● Do NOT modify this product in any way. Modica-
tion can be extremely hazardous.
● Disconnect product from power supply (if ap-
plicable), 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
xed 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 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 (uid in lungs); chemical
burns to eyes, lungs, and skin; and could cause
a re (when exposed to open ame).
● COMPRESSOR-COOLING-SYSTEMS. FIRE,
FROSTBITE, OR INHALATION HAZARD. Do
NOT fracture or puncture cooling unit. The cooling
unit is under pressure and contains tetrauoroethane 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 re
(when exposed to open ame).
● FIRE OR INHALATION HAZARD. If refrigerator
stops working and/or it emits an ammonia smell,
immediately turn refrigerator OFF (if it is safe to
do so), leave the vicinity, and contact a qualied
Service Center.
● CARBON MONOXIDE HAZARD. This product
can produce carbon monoxide. Carbon Monoxide
has no odor and can kill you. The burner and ue
system MUST be kept clean.
See “Product Maintenance” on
page (15).
● FIRE OR EXPLOSION HAZARD. Do NOT store
or use gasoline, oil or gasoline soaked rags, or
other ammable vapors and liquids in the service
area behind the refrigerator or in the vicinity of
this or any other gas appliance.
● FIRE OR EXPLOSION HAZARD. BEFORE refu-
eling or parking near a gasoline pump, make sure
ALL LP gas appliances (vented to the outside of
RV) are shut OFF . Otherwise, fumes from gaso-
line pumps could come into contact with an LP
gas appliance burner ame and ignite.
● PRESSURE HAZARD. Do NOT place carbonated
liquids, glass containers, or sealed bottles or cans
in freezer. Liquids expand when frozen and could
cause container to explode.
Failure to obey the following caution
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.
4
REFRIGERATOR OVERVIEW
A. Refrigerator Volume
Total refrigerator volume: 9.0 cu. ft.
B. Refrigerator Illustration
Appearance and features may vary depending on model. Quantity and position of items may also vary. See (FIG. 1).
FIG. 1
Upper
Food Storage
Compartment
Upper
Compartment
Control
Panel
LH Light / Airing Slide
Milk Shelf
Shelf
RH Light / Airing Slide
Lower Compartment
Control Panel
Upper Door Shelf
Door
Lower
Food Storage
Compartment
Crispers
Drawer
Catch
Basket
Door Rail
Lower Door Shelf
Bin
Drawer
5
REFRIGERATOR OVERVIEW
C. Absorption Cooling System
See “General Safety Messages” for information on absorption cooling systems, and
consequences of exposure to refrigerant.
The upper food compartment is used for fresh food
storage only. This compartment is cooled by vaporabsorption refrigeration.
The absorption system will function on BOTH LP
Gas and electric (120 Vac) power.
D. Compressor Cooling System
See “General Safety Messages” for information on compressor cooling systems, and
consequences of exposure to refrigerant.
The lower food compartment (drawer) may be used
for fresh food storage, or frozen food storage (depending on temperature setting). This compartment
is cooled by vapor-compression refrigeration.
The compressor cooling system will function on
electric (120 Vac and 12 Vdc) power ONLY.
E. Keep Refrigerator Level
(ABSORPTION COOLING SYSTEM ONLY)
For optimal cooling performance, an absorption refrigerator must be level. If the refrigerator operates
in a noticeable out-of-level condition for several
hours, loss of cooling performance will occur.
When RV is parked and absorption system is operating, the RV must be level enough to live in and
feel comfortable.
The RV does NOT need to be PERFECTLY
level, but there should be no noticeable slop-
ing of RV oor or walls.
It is NOT critical for refrigerator to be level
while RV is traveling. The rolling and pitching motion of travel helps keep the absorption
system balanced.
F. Operating Refrigerator At High Altitude
All gas appliances experience lowered efciency
(or rating) at high altitude. This is a direct result of
lower atmospheric pressure and oxygen levels, and
is not a defect of the refrigerator.
Reduced cooling performance and burner outage
may occur at altitudes higher than 5500 feet above
sea level (while operating on LP gas). Always operate refrigerator on electric power at altitudes above
5500 feet.
G. Operating Refrigerator During Extreme
Cold Weather
Upper food compartment performance may be reduced in extremely cold (subzero) temperatures.
This temporary condition is normal for absorption
refrigerators and does not indicate product failure.
If performance is reduced during cold weather, turn
upper food compartment OFF.
See “Start / Stop Refrigerator” on page (10).
When ambient temperature rises, please
restart upper food compartment before requesting service.
H. When Refrigerator Is Not In Use
Always turn refrigerator OFF when not in use.
Do NOT allow refrigerator to run idle or unattended for more than a day. See “C. Airing
Position (Store Refrigerator)” on page (14).
6
CONTROLS
A. Control Panel Buttons
1. UPPER FOOD COMPARTMENT
See (FIG. 2).
a. (1) ON/OFF (power) button
Press this button to turn power ON or OFF.
Steady blue LED (H) indicates absorption
cooling system is ON. LED (A) indicates
power status. See (Table 1).
Table 1
(1)
Button
ON
OFF
(A)
LED
GREEN
(Steady)
OFF
(Dark)
b. (2) AUTO/GAS (mode selector) button
Press this button to select operation mode of
automatic detect or LP gas only.
LEDs (B) and (C) indicate modes of operation. LED (D) indicates LP gas ignition status. See (Table 2).
(H)
LED
BLUE
(Steady)
OFF
(Dark)
Power to absorption
cooling system is ON.
Power to absorption
cooling system is OFF.
Description
(E)
LED
BLUE
(Steady)
OFF
(Dark)
OFF
(Dark)
c. (3) TEMP (temperature) button
Press this button to cycle through temperature settings.
LEDs (E), (F), and (G) indicate temperature /
cooling levels. See (Table 3).
Table 3
(F)
LED
OFF
(Dark)
BLUE
(Steady)
OFF
(Dark)
(G)
LED
OFF
(Dark)
OFF
(Dark)
BLUE
(Steady)
Description
COLD
(Minimum cooling level.)
COLDER
(Intermediate cooling
level.)
COLDEST
(Maximum cooling level.)
(B)
LED
GREEN
(Steady)
OFF
(Dark)
N/A N/A
FIG. 2
Table 2
(C)
LED
OFF
(Dark)
GREEN
(Steady)
A B C D E F G
(D)
LED
OFF
(Dark)
OFF
(Dark)
AMBER
(Steady)
Description
Absorption cooling
system is in AUTOMATIC
detect mode.
Absorption cooling system
is in LP GAS only mode.
Ignition ERROR.
See “C. Absorption
System Ignition Error” on
page (20).
H
1 2 3
7
Upper Compartment Controls
(Absorption System)
CONTROLS
2. LOWER FOOD COMPARTMENT
See (FIG. 3).
a. (4) ON/OFF (power) button
Press this button to turn power ON or OFF.
Steady blue LED (M) indicates compressor cooling system is ON. LED (J) indicates
power / error status. See (Table 4).
Table 4
(4)
Button
ON
OFF
ON
FIG. 3
(J)
LED
GREEN
(Steady)
OFF
(Dark)
GREEN
(Flashing)
(M)
LED
BLUE
(Steady)
OFF
(Dark)
N/A
b. (5) TEMP (temperature) button
Press this button to select storage temperature setting of “fresh food” or “frozen food.”
LEDs (K) and (L) indicate modes of operation. See (Table 5).
(K)
LED
Description
Power to compressor
cooling system is ON.
Power to compressor
cooling system is OFF.
ERROR code.
See “D. Compressor
System Error Codes”
on page (20).
J K L
OFF
(Dark)
BLUE
(Steady)
BLUE
(Flashing)
(L)
LED
BLUE
(Steady)
OFF
(Dark)
BLUE
(Flashing)
Table 5
Description
DEFAULT setting.
Lower food compartment is set
for FROZEN food storage.
Lower food compartment is set
for FRESH food storage.
Temperature ERROR.
See “D. Compressor System
Error Codes” on page (20).
M
4 5
Lower Compartment Controls
(Compressor System)
8
CONTROLS
B. Modes Of Operation
See “A. Control Panel Buttons” on page
(7) for details on control settings and LED
indicators.
1. STANDBY MODE
If refrigerator controls cannot read food com-
partment temperature, or if temperature is outside normal operating range, the affected system switches to standby mode. The refrigerator
continues to operate using any available energy
source.
Standby mode for upper food compartment runs
the absorption system continuously. This could
cause fresh food items to freeze.
Standby mode for lower food compartment runs
the compressor system on an intermittent cycle.
This could cause frozen food items to thaw, or
fresh food items to freeze.
For either incident, the affected cooling system
remains in standby mode until sensor failure is
repaired and system is reset.
2. UPPER FOOD COMPARTMENT
The upper food compartment operates on (2)
power modes:
a. Auto mode - [default].
In this mode, the power source is automatically selected in the following order:
I. 120 Vac - [default].
Electric power takes priority in this mode.
The upper compartment attempts to op-
erate on electric power rst.
Electric power is ALWAYS the pri-
mary source of power. The upper
compartment reverts back to electric power (from other power sources) whenever it becomes available.
II. LP Gas - [secondary].
The upper compartment automatically
switches to LP gas if electric power is unavailable.
If electric power becomes available
during LP gas operation, the upper
compartment automatically switches back to electric power.
b. LP gas mode.
In this mode, the upper compartment only
operates on LP gas. The ignition cycle proceeds to light the LP gas burner in the following order:
I. The lighter sparks for approximately 45
seconds.
II. If rst attempt fails, the lighter repeats up
to 3 times.
There is a 2 minute rest period between each attempt.
III. If ignition cycle fails, upper compartment
remains OFF, and will not cool.
To attempt a new ignition cycle for
LP gas operation, see “A. Purge LP
Gas Lines” on page (10).
3. LOWER FOOD COMPARTMENT
The lower food compartment (drawer) operates
on electric power only. The power source is automatically selected in the following order:
a. 120 Vac - [default].
The lower compartment attempts to operate
on 120 Vac power rst.
120 Vac is ALWAYS the primary
source of power. The lower compartment reverts back to 120 Vac (from 12
Vdc) whenever it becomes available.
b. 12 Vdc - [secondary].
The lower compartment automatically
switches to 12 Vdc power if 120 Vac is unavailable.
If 120 Vac becomes available during
12 Vdc operation, the lower compartment automatically switches back to
120 Vac power.
C. Temperature (Thermostat) Control
See “A. Control Panel Buttons” on page
(7) for details on control settings and LED
indicators.
1. UPPER FOOD COMPARTMENT
The upper food compartment has (3) tempera-
ture modes (settings):
a. Cold (minimum cooling level).
b. Colder (intermediate cooling level).
c. Coldest (maximum cooling level).
2. LOWER FOOD COMPARTMENT
The lower food compartment has (2) tempera-
ture modes (settings):
a. Frozen food (freezer) mode - [default].
b. Fresh food (refrigerator) mode.
Before changing temperature
setting from fresh food to freezer, make sure
interior surfaces are completely dry. Otherwise, drawer slides may freeze up, making
drawer operation difcult.
9
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