Dometic RM7732, RM7030 AES Fully Automatic Mode, LP GAS Operation, LP GAS only Operation

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DIAGNOSTIC SERVICE MANUAL

DOMETIC® RM7030/RM7732 Refrigerators

SECTION 1

1.1OPERATION

RM7030 (Product No. 921890201 & 921890301)

A B

C

D E F G H

OFF

ON

AC

AES FULLY AUTOMATIC MODE

Turn switch "C" to the "ON" position. The bulb above push-button "A" will light up green, indicating that the control system is in the fully automatic mode. In this mode, 120 volts AC operation has first priority, meaning the refrigerator will operate on 120 volts AC whenever it is available. If 120 volts AC is not available, the system will automatically switch to LP gas operation. The thermostat inside the refrigerator cabinet cycles the element/burner as required to maintain the desired temperature.

NOTE: The AES controls will automatically go to the fully automatic mode each time switch "C" is turned "ON".

LP GAS OPERATION

When there is no electrical power available (120 volts AC) or if the indicator lamp above button "B" is ON, the AES system will switch to LP gas operation. When the thermostat in the refrigerator cabinet calls for cooling, the following sequence takes place:

A.A high voltage spark is created above the burner.

B.Power is sent to a solenoid which opens the gas control, allowing LP gas to flow to the burner. The spark ignites the LP gas and the small flame pro- vides heat for the boiler.

C.The electrode mounted above the burner tube monitors the flame continuously. If the flame should fail for any reason, the high voltage spark will start immediately and relight the flame.

When the thermostat reaches the desired temperature, it will shut off the gas flame completely. The system will remain on standby until cooling is again required.

LP GAS ONLY OPERATION

Turn switch "C" to the "ON" position and press push- button "B". The green indicator lamp over push-button "B" will come on and the refrigerator will operate only on LP gas even if 120 volts are available. When the vehicle engine is turned "OFF", the AES system initiates a 25 minute delay, preventing the refrigerator from operating on LP gas.

LP GAS DELAY MODE

When the vehicle engine is turned off, the AES system initiates a delay cycle which prevents the refrigerator from operating on LP gas for 25 minutes. The purpose of the delay is to avoid having a gas flame burning dur- ing a refueling stop at a gas station (see WARNING).

If the vehicle engine is restarted during this delay pe- riod, the LP gas operation will not start until the delay period is over. This means each time the vehicle engine is stopped, the complete 25 minute delay cycle will take place. If 120 volt AC becomes available during this de- lay cycle, the AES system will start operation in the 120 volt AC mode immediately, unless the push-button "B" (LP gas only) has been pressed.

If the RV is stopped somewhere other than a gas sta- tion, you may wish to cancel the delay cycle. To do this, turn the main system switch to "OFF" for several sec- onds, then turn the main system switch back to "ON" and the system will immediately start operation in the LP gas mode.

Most LP gas appliances used in recreational ve- hicles are vented to the outside of the vehicle. When parked close to a gasoline pump, it is possible that the gasoline fumes could enter this type of appli- ance and ignite from the burner flame, CAUSING A FIRE OR AN EXPLOSION.

FOR YOUR SAFETY, it is recommended that all LP gas appliances which are vented to the outside should be shut off when refueling.

The AES system is designed to turn off the LP flame during refueling stops by the use of the delay cycle explained previously. However, you must remember that the delay cycle will be activated only if the refrigerator is properly connected to the vehicle engine electrical circuit.

If the refrigerator is not connected to the engine by the ignition lock wiring, the refrigerator must be shut off during refueling. To do this, turn the main system switch "C" to "OFF". Only after the vehicle has been moved away from the refueling area should the main system switch "C" be turned back ON.

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Contents Foreword Contents Wiring OtherICE Maker ICE Maker ComponentsSymptom Cause Refer to Step Refrigerator Section RM7030 Refrigerator SectionSymptom Cause Refer to Step C,DSymptom Cause Refer to Step ICE Maker Section AES Fully Automatic Mode LP GAS Delay ModeOperation LP GAS OperationAES Display Panel AES Mode Volts AC Operation Flame Failure During LP GAS OperationLOW Voltage Monitor ThermostatGAS Mode Standby Mode of OperationAuto Mode RM7732 Refrigerator OperationDescription of Operating Modes To Shut OFF the RefrigeratorAC Voltage Requirements Accomponents Heating ElementDC Voltage Requirements DC ComponentsSolenoid Valve Thermistor AdjusterThermistor Igniter High Voltage CableUpper Circuit Board ON-OFF SwitchFuses AES Function Switch AC Mode Lamp and SwitchGAS Function Lamp AES Function LampGAS Flame Warning Lamp Delay Mode Lamp and SwitchGAS Mode Lamp and Switch Diagnostic Mode Lower Circuit BoardRM7030 Product No & RM7732 Door Switch LP GAS Requirements ElectrodeClimate Control Heater Test PortLP GAS Components Manual GASOrifice ThermocoupleWiring Internal WiringBurner Flue BaffleTypical Wiring Diagram for Volts AC RM7732 Typical Wiring Diagram Other Securing the Refrigerator Ambient Temperature Door PositionSmooth FIT, Proper Seal Cooling UnitInterior Liner Seal to Frame ICE Maker Operation ICE Maker ComponentsMold Heater ICE EjectorMold Switches Shutoff ARMTiming Motor Water ValveSchematics on Pages 32 Through ICE Maker AssemblyDometic RM7030/RM7732 Refrigerators Dometic RM7030/RM7732 Refrigerators Water Fill Adjustment ICE Maker OtherICE Maker Typical Wiring Diagram Water Supply

RM7030, RM7732 specifications

The Dometic RM7732 and RM7030 are two innovative refrigeration solutions designed for those who enjoy outdoor adventures such as camping, RVing, and boating. These refrigerators are engineered to provide reliable cooling performance while prioritizing energy efficiency and ease of use.

The Dometic RM7732 is a three-way refrigerator that operates on 12V DC, 110V AC, and propane. Its versatility makes it an ideal choice for those who may not always have access to an electric power source. With a capacity of 7.3 cubic feet, it can hold a substantial amount of food and beverages, making it perfect for extended trips. The RM7732 also boasts an impressive temperature range, allowing it to maintain optimal cooling conditions even in varying outdoor temperatures. Its sleek design includes a reversible door, providing flexibility in installation and use.

On the other hand, the Dometic RM7030 is a double-door refrigerator that combines style with functionality. This model also supports three-way operation: propane, 12V DC, and 110V AC. It offers a slightly smaller capacity than the RM7732 but is still equipped to handle the needs of a small family or group. One of its standout features is its efficient absorption cooling technology, which ensures that the refrigerator operates quietly, making it an excellent choice for nighttime use.

Both models feature an electronic ignition system that simplifies the process of starting the propane function. The intuitive control panel on each unit allows users to easily select the preferred power source and adjust the temperature settings. Energy-efficient LED lighting inside the refrigerators enhances visibility while consuming minimal power.

Dometic has incorporated advanced insulation materials in both the RM7732 and RM7030 to reduce energy consumption, ensuring that food stays cooled even under high ambient temperatures. The sturdy construction is designed to withstand the rigors of outdoor use, and the units are built to last.

In summary, the Dometic RM7732 and RM7030 refrigerators are excellent choices for outdoor enthusiasts seeking reliable, versatile, and energy-efficient cooling solutions. With their range of power options, impressive capacities, and user-friendly features, they are well-equipped to handle the demands of any adventure while keeping your provisions fresh and cool.
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