Dometic RM7030, RM7732 Flame Failure During LP GAS Operation, LOW Voltage Monitor, Thermostat

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DOMETIC® RM7030/RM7732 Refrigerators

DIAGNOSTIC SERVICE MANUAL

FLAME FAILURE DURING LP GAS OPERATION

If the LP gas flame fails during the burner cycle, the high voltage spark will continue arcing for up to three minutes.

At the end of three minutes the gas control will stop the flow of LP gas to the burner, the sparking will stop and the red indicator lamp "H" will light up. LP gas operation will not be possible as long as this indicator is ON.

To restart LP gas operation, turn the main system switch "C" to "OFF" for five seconds and then back ON. This will reset the AES controls and turn off the flame failure indicator "H". The system will start another cycle for gas ignition.

If the refrigerator has not been used for a long time or the LP tanks have just been refilled, air may be trapped in the supply lines. To purge the air from the lines may require resetting (turning OFF and ON) the On/Off switch "C" three or four times.

If repeated attempts fail to start the LP gas operation, check to make sure that the LP gas supply tanks are not empty and all manual Shutoff valves in the lines are open.

NOTE: If you are in the AES mode when the flame failure light "H" comes on, the mode indicator lamp "A" (green light) will go out. If 120 volt AC power becomes available during this period, the mode indication lamp will come on showing that the refrigerator is operating on another energy source. The red lamp "H" will remain on until the AES system is reset with an OFF/ON operation of the main switch "C". If you have selected the LP gas only mode (control button "B"), the 120 volt function has been locked out. If the burner fails to light, the green lamp over button "B" will go out and the red lamp "H" will glow indicating flame failure. Even if 120 volts is available, the refrigerator cannot switch to electric operation and all cooling will stop. This fact must be considered when selecting "gas only" operation.

LOW VOLTAGE MONITOR

The AES system requires 12 volts DC power at all times to operate properly. The DC power must be 9.5 volts DC or higher. If the DC voltage drops below 9.5 volts DC, the AES system will switch to an emergency cooling mode.

1.The mode indicator lamp will go off (green light);

2.The system will revert to continuous LP gas operation, with no thermostat control.

The refrigerator will continue to operate in the emer- gency mode until the DC power supply is increased to

10.5volts DC. When 10.5 volts is reached, the mode indicator light (green) will come back on and normal operation will resume.

During the low voltage condition, the interior light will operate normally.

THERMOSTAT

The refrigerator is equipped with a thermostat that can be adjusted to maintain various temperatures. Turn the knob clockwise toward "MAX" for a lower temperature and for a warmer temperature – turn the knob counter- clockwise toward "MIN". Set the thermostat approxi- mately mid-range and adjust it toward "MIN" or MAX" to obtain the desired cabinet temperatures. Remember, at the "MAX" setting, the heating element/burner is running continuously and the lower cabinet temperatures are obtained.

1.2RM7030 (Product No. 921890401)

AES DISPLAY PANEL

AES MODE

120 VOLTS AC OPERATION

Since 120 volt AC is usually the most economical source for operation of the refrigerator, the AES control system is designed to select this mode whenever it is available. The only exception to this is when push- button "B" (LP gas only mode) is selected. The 120 volt heating elements attached to the boiler provide the heat necessary to operate the cooling system. The thermo- stat controls the power ON and OFF to the elements and maintains the desired temperature.

1.Move the AES mode selector button (2) to the DOWN position. If 120 volts AC is available, the AC mode indicator lamp "A" will illuminate indicating AC operation. If 120 volts AC is not available, the GAS mode indicator lamp "C" will illuminate and the control system will automatically switch to GAS operation.

2.If the CHECK indicator lamp "D" illuminates and the GAS mode indicator lamp "C" is off, the controls have failed to ignite the burner in the GAS mode. GAS operation may be reset by pressing main power ON/OFF button (1) to the OFF then ON position.

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Contents Foreword Contents Other WiringICE Maker ICE Maker ComponentsRM7030 Refrigerator Section Symptom Cause Refer to Step Refrigerator SectionC,D Symptom Cause Refer to StepSymptom Cause Refer to Step ICE Maker Section LP GAS Delay Mode AES Fully Automatic ModeOperation LP GAS OperationFlame Failure During LP GAS Operation AES Display Panel AES Mode Volts AC OperationLOW Voltage Monitor ThermostatStandby Mode of Operation GAS ModeAuto Mode RM7732 Refrigerator OperationTo Shut OFF the Refrigerator Description of Operating ModesAccomponents Heating Element AC Voltage RequirementsDC Voltage Requirements DC ComponentsThermistor Adjuster ThermistorSolenoid Valve High Voltage Cable IgniterON-OFF Switch FusesUpper Circuit Board AC Mode Lamp and Switch AES Function SwitchGAS Function Lamp AES Function LampDelay Mode Lamp and Switch GAS Mode Lamp and SwitchGAS Flame Warning Lamp Lower Circuit Board Diagnostic ModeRM7030 Product No & RM7732 Door Switch Electrode LP GAS RequirementsClimate Control Heater Test PortManual GAS LP GAS ComponentsThermocouple OrificeInternal Wiring WiringBurner Flue BaffleTypical Wiring Diagram for Volts AC RM7732 Typical Wiring Diagram Other Securing the Refrigerator Door Position Ambient TemperatureSmooth FIT, Proper Seal Cooling UnitInterior Liner Seal to Frame ICE Maker Components ICE Maker OperationMold Heater ICE EjectorShutoff ARM Mold SwitchesTiming Motor Water ValveICE Maker Assembly Schematics on Pages 32 ThroughDometic RM7030/RM7732 Refrigerators Dometic RM7030/RM7732 Refrigerators ICE Maker Other Water Fill AdjustmentWater Supply ICE Maker Typical Wiring Diagram

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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