Dometic RM7732, RM7030 service manual Igniter, High Voltage Cable

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DIAGNOSTIC SERVICE MANUAL

DOMETIC® RM7030/RM7732 Refrigerators

Next, hook up a manometer at the test port. Then

check for DC volts at gas valve terminals while the unit is in trial-for-ignition. If DC volts are present and pressure is low,

replace the valve. If DC volts are not present at

the valve while unit is in trial-for-ignition, verify that the wires at Plug 3,

Terminal 1 and 2 on lower circuit board have DC volts (9 or more). If the valve chatters, check for low input voltage to the valve (below 9V DC).

5.5IGNITER

A. RM7030 (Product No. 921890201 & 921890301)

The igniter is an electronic device that produces high voltage to create a spark at the burner, only on gas mode. It also produces an increased DC voltage at the "L" terminal which is a signal to the circuit board that a spark has been produced. First verify proper voltage at the positive (+) and ground (–) terminals. The reading should be within one volt of incoming voltage at the main terminal block. A voltage drop of more than one volt would indicate a loose connection (see Sec. 8.2) or a circuit board problem (see Sec. 5.9A to 5.9D).

Next, disconnect DC power at refrigerator terminal block. Remove high voltage cable from igniter. Recon- nect DC power – the igniter should produce sparking sound. If not, replace the igniter. With the igniter pro- ducing spark, connect meter leads to "L" and ground (–) terminals on the igniter, with the meter set on 20 volts DC range or lower. The meter should read a pulsating voltage. If not, replace the igniter.

NOTE: If a spark is not produced within 10

seconds, the gas flameHIGH VOLTAGE warning lamp will illumi-

nate. If spark is produced it will take 3 minutes for lamp to illuminate.

If all of the previous checks are correct, the igniter is good – do not replace.

B. RM7030 (Product No. 921890401) and RM7732 The igniter is an electronic device that produces high voltage to create a spark at the burner, only on gas mode.

First, verify proper voltage at the positive (+) and ground (–) terminals. The reading should be within one volt of incoming

voltage at the main terminal block during trial-for-ignition.

If no voltage is present, see Sec.

5.9E to 5.9G.

Next, disconnect DC power at refrigerator terminal block. Remove high voltage cable from igniter. Reconnect DC power, the igniter should produce a sparking sound duringtrial-for-ignition. If not, replace the igniter.

5.6HIGH VOLTAGE CABLE

A. RM7030 (Product No. 921890201 & 921890301) Disconnect DC power at the refrigerator terminal block. Disconnect high voltage cable from electrode. Recon- nect DC power. If sparking starts, cable is good (see Sec. 5.11). If no sparking, disconnect DC power. If sparking sound from igniter, then replace high voltage cable.

B.RM7030 (Product No. 921890401) and RM7732 Disconnect DC power at the refrigerator terminal block. Disconnect high voltage cable from electrode. Recon- nect DC power. If sparking startsduring trial-for-ignition, the cable is good (see Sec. 5.11). If there is no sparking during trial-for-ignition, disconnect DC power and disconnect high voltage cable at the igniter. Reconnect DC power. If there is a sparking sound from the igniter during trial-for-ignition, then replace high voltage cable.

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Contents Foreword Contents ICE Maker WiringOther 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 Operation AES Fully Automatic ModeLP GAS Delay Mode LP GAS OperationLOW Voltage Monitor AES Display Panel AES Mode Volts AC OperationFlame Failure During LP GAS Operation ThermostatAuto Mode GAS ModeStandby Mode of Operation RM7732 Refrigerator OperationDescription of Operating Modes To Shut OFF the RefrigeratorDC Voltage Requirements AC Voltage RequirementsAccomponents Heating Element DC ComponentsSolenoid Valve Thermistor AdjusterThermistor Igniter High Voltage CableUpper Circuit Board ON-OFF SwitchFuses GAS Function Lamp AES Function SwitchAC Mode Lamp and Switch 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 Climate Control Heater LP GAS RequirementsElectrode Test PortLP GAS Components Manual GASOrifice ThermocoupleBurner WiringInternal Wiring Flue BaffleTypical Wiring Diagram for Volts AC RM7732 Typical Wiring Diagram Other Securing the Refrigerator Smooth FIT, Proper Seal Ambient TemperatureDoor Position Cooling UnitInterior Liner Seal to Frame Mold Heater ICE Maker OperationICE Maker Components ICE EjectorTiming Motor Mold SwitchesShutoff ARM 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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