RM7030 | RM7130 | RM7732 | RM7832

The early 7 series Dometic fridges are excellent fridges, the Fridge Defend is required for safety, reliability, and efficiency. This page covers the RM7030, RM7130, RM7732, RM7832.

Table of Contents


Instructions: Subjects are listed on left. Click the link to the right to go directly to the subject matter on this page.

Dometic RM7732 Safety

Dometic Early 12cuft Side-by-Side Overview

The early 7 series Dometic fridges came in 5th Wheel Trailers, Class-A, and some Class-C motorhomes. Due to the dimensions of the refrigerator there is not a direct replacement for this  excellent fridge. The good news is that if the boiler is not allowed to overheat on these units, they will last the life of the RV. Therefore, installation of the Fridge Defend is absolutely necessary to keep these fridges alive.

Click here to see how the ARP helps prevent fires while improving reliability and efficiency.

Another issues that the Fridge Defend + Fan Control addresses is the heat removal from the cooling unit compartment. When Domeic increased the size of their fridge they had to increase the heat input necessary to drive the absorption cycle. As a result, it is highly recommended that the Fridge Defend + Fan Control be installed on these units.

Please click here to see how ARP + Fan Control solves fridge efficiency issues.

Dometic RM7030 RM7732

Install Fridge Defend Control

This image is the view looking into the cooling unit compartment of the Dometic RM7030, RM7130, RM7732, or RM7832. Please note that the drawing shows all of the features for installation of the ARP Control.

The Fridge Defend can be mounted on the Dometic control box. Also, see the wiring section below, some of the RM7 series of fridge do not have the Boiler Housing Thermal Fuse (Dometic Recall: Thermofuse; Thermal Fuse; Thermal Switch).

Please use this image along with the following sections for installation of the ARP boiler temperature sensor.

Dometic RM7130 Boiler

ARP Temperature Sensor

Once the boiler housing is opened, remove the insulation just above the heaters. There are two tubes inside the boiler housing, one is the flue tube, in this photo the flue tube is behind the black arrow. The other tube is the boiler tube. The boiler tube is easy to identify because the electric heater mounts are welded to the boiler tube.

Please note the yellow arrow, there are a number of features as follows: There are crimps in the boiler tube, the ARP boiler sensor is clipped to one of the bulges created by the crimps. Also, the sensor tip is in contact with the boiler tube. Lastly, insulation is placed between the ARP sensor and the flue tube, the black arrow points at the added insulation.

Please see Dometic Left Hand Boiler Temperature Sensor Install Video

Click here to view the NDR1292 page to see more ARP sensor install information.

Cooling Unit Wiring

RM7030; RM7130; RM7732; RM7832 (Early 2-Way)

Please click here for the details of wiring the 2-way models without the boiler thermal switch recall.

RM7030; RM7130; RM7732; RM7832 (Late 2-Way with Recall)

Click here if your fridge has a boiler thermal switch that is wired in line with the power supply.

ARP Fan Install

Please click here for the ARP blower fan and temperature sensor installation.

Please see the full ARP User Manual and Installation Guide for more information needed before using your ARPrv Control.

Dometic Service Manual Repair Specifications

Please note that all of the following specifications are believed to be accurate. If any errors are found, please bring them to our attention as soon as possible. For critical specification please contact Dometic as they make changes to their specifications without notice.

FRIDGE MODEL: RM7030 RM7130 RM7732 RM7832 Units
ARP Control Boiler Temperature 185-195 185-195 185-195 180-190 Celsius
Off-Level Operating Limit dependent on ambient and ARP boiler temp.
Minimum DC Power Supply 9.6 9.6 9.6 9.6 VDC
Maximum DC Power Supply 22 22 22 22 VDC
Maximum AC on 12VDC Supply Line 6 6 6 6 VAC


Board 12VDC Fuse 3 3 3 3 Amp
Board AC Fuse 5 5 5 5 Amp

AC Power

Operating Range 100-132 100-132 100-132 100-132 VAC

DC Heaters

DC Heater Power Rating -- -- -- -- Watts
Current -- -- -- -- Amps
Heater Resistance per Heater (cold) -- -- -- -- Ohms
Fuse -- -- -- -- Amps

AC Heaters

AC Heater Power Rating (each) 210 210 210 210 Watts
Current 1.8 1.8 1.8 1.8 Amps
Heater Resistance per Heater (cold) 67 67 67 67 Ohms

LP Gas

Gas Pressure 10.5-11.5 10.5-11.5 10.5-11.5 10.5-11.5 inch w.c.
Gas Jet #73 #73 #76 #76
Gas Thermocouple 25-35 25-35 25-35 25-35 mili-Volts
Electrode to Burner Gap 3/16 3/16 3/16 3/16 inch

Fridge Temperature Sensor

Thermistor @ 33degF to 35degF 7k-10k 7k-10k 7k-10k 8k-10k Ohms
Please click here for more information on Dometic thermistor troubleshooting.

Dometic Service Manual Downloads

Service Manual Download: RM7030, RM7732

Service Manual Download: RM7030, RM7130, RM7732, RM7832

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