Dometic RM 8505 - Service Manual

Other manuals for Dometic RM 8505

Operating Manual64 pages

Installation Manual60 pages

Operating Instructions58 pages

Installation Instructions30 pages

Installation56 pages

Questions and Answers

B
Bryan BrightAug 19, 2025
Why is my Dometic RM 8505 not cooling sufficiently?
- W
  Walter BentonAug 19, 2025
  There are several reasons why your Dometic Refrigerator might not be cooling well enough: * The ventilation to the unit might be inadequate. Ensure that the ventilation grilles are not covered. * The thermostat setting could be too low. Try setting the thermostat to a higher level. * The condenser may be heavily frosted. Check that the refrigerator door closes properly. * Too much warm food might have been stored inside recently. Allow warm food to cool down before storage. * The appliance may not have been running long enough. Check whether the cooling compartment works after approximately 4 - 5 hours. * Ambient temperatures could be too high. Regularly remove ventilation grilles.
R
Rachel ParkerAug 21, 2025
How to fix Dometic RM 8505 not cooling in gas operation mode?
- A
  Alexandra SmithAug 22, 2025
  If your Dometic Refrigerator isn't cooling while in gas operation mode, make sure the gas cylinder isn't empty and replace it if it is. Check that the upstream shut-off device is open. If there's air in the gas pipe, switch off the appliance and start it again; repeat this procedure 3-4 times if necessary.
A
Andrew TaylorAug 25, 2025
Why is my Dometic Refrigerator not cooling enough?
- K
  Kelsey ClarkAug 25, 2025
  There are several reasons why your Dometic Refrigerator might not be cooling sufficiently. It could be due to inadequate ventilation, so check that the ventilation grilles are not covered. The thermostat setting might be too low, so try setting it to a higher level. A heavily frosted condenser can also cause this issue, so ensure the refrigerator door closes properly. Avoid storing too much warm food at once, and allow food to cool before storing it. Also, the appliance needs time to cool down, so check after 4-5 hours of operation. High ambient temperatures can also affect cooling, so regularly remove ventilation grilles.
S
singletonjosephAug 26, 2025
How to fix a Dometic Refrigerator that does not cool sufficiently?
- A
  Alex OsborneAug 26, 2025
  If your Dometic Refrigerator isn't cooling sufficiently, here are a few things to check: * Ensure that the ventilation grilles are not covered. * Try setting the thermostat to a higher level. * Make sure the refrigerator door closes properly. * Allow warm food to cool down before placing it inside. * Check if the cooling compartment starts working after about 4 to 5 hours. * Regularly remove the ventilation grilles.
C
crossAug 28, 2025
Why is my Dometic Refrigerator not cooling in gas operation mode?
- E
  Elizabeth ReyesAug 28, 2025
  If your Dometic Refrigerator isn't cooling while in gas operation mode, consider these solutions: * Replace the gas cylinder. * Ensure the shut-off device is open. * Try switching the appliance off and on again. Repeat this process 3-4 times if needed.
J
jennifer72Aug 30, 2025
What to do if Dometic RM 8505 flame not ignited in GAS/Auto mode?
- L
  Lori DukeAug 30, 2025
  If the flame is not igniting in GAS/Auto mode on your Dometic Refrigerator, ensure that the gas supply is turned on and that the igniter is functioning correctly.
D
Dawn MartinSep 1, 2025
What to do if Dometic RM 8505 does not cool in 12V operation?
- K
  Kevin MillerSep 1, 2025
  If your Dometic Refrigerator isn't cooling when running on 12V, consider the following: * The on-board fuse may be defective. Try fitting a new fuse. * The on-board battery might be discharged. Check the battery and charge it if necessary. * The engine may not be running. Start the engine. * The heating element might be defective. Please contact Dometic Customer Services for assistance.
N
Nicholas DavisSep 3, 2025
What to do if Dometic RM 8505 Refrigerator does not cool in 230V operation?
- L
  Lori BlairSep 3, 2025
  If your Dometic Refrigerator isn't cooling when running on 230V, consider the following: * The on-board fuse may be defective. Try fitting a new fuse. * The vehicle may not be connected to mains supply voltage. Connect to a mains power supply. * If it is AES, gas operation might be engaged despite connection to the mains supply voltage. In this case (automatically switches back to 230V operation) contact Dometic Customer Services. * The heating element might be defective. In this case contact Dometic Customer Services.
P
perrymelindaSep 5, 2025
How to fix a Dometic Refrigerator that does not cool in gas operation mode?
- R
  Ryan ScottSep 5, 2025
  If your Dometic Refrigerator isn't cooling when in gas operation mode: * The gas cylinder might be empty. Change the gas cylinder. * The upstream shut-off device might not be open. Open the shut-off device. * There might be air in the gas pipe. Switch off the appliance and start again. Repeat this procedure 3 - 4 times, if necessary.
W
William HarrellSep 8, 2025
What to do if my Dometic RM 8505 does not cool in 240V operation?
- S
  stephaniemarquezSep 8, 2025
  If your Dometic Refrigerator isn't cooling when running on 240V, check the on-board fuse and replace it if it's defective. Ensure the vehicle is properly connected to a mains power supply. If you have an AES (Automatic Energy Selector) model, it might switch to gas operation if the mains supply voltage is insufficient; it will automatically switch back to 230V when the voltage is adequate. If these steps don't resolve the issue, please inform the Dometic Customer Service, as the heating element might be defective.

Summary

Service-Instruction

Model Description

Model Identification

Details the identification of refrigerator models using a systematic naming convention.

Refrigerator Rating Plate

Explains the location and importance of the refrigerator rating plate for identification and ordering.

Technical Data

Provides detailed specifications including dimensions, capacity, power consumption, and weight for various models.

Refrigerator Component Identification

Illustrates and labels the main parts of the refrigerator, such as controls, freezer compartment, and shelves.

Terminal Block Connections

Details the connections for the terminal blocks on RM 8xxx and RMD 8xxx models for electrical systems.

General Information and Features

Covers general aspects, door locking, and specific features of MES, AES, and RMD models.

Operating Controls Explanation

Explains the function of various controls and indicators on the refrigerator's operating panel for different models.

Components

Power Modules Overview

Details the power modules for MES and AES versions, including component identification and connections.

Temperature Sensor NTC

Provides resistance values for the NTC sensor at different temperatures and explains its role in fridge operation.

Burner Control Device P810

Describes the function of the P810 control device for ignition, flame control, and gas valve operation.

Gas Valve GV100

Details the specifications and measurement points for the GV100 gas valve, part of the gas safety device.

Gas Burner and Cleaning

Explains the gas burner components and recommends regular cleaning of the burner and chimney.

Interior Light and Door Lock

Describes the interior light and door lock unit, its replacement, and the optional electrical door lock feature.

Wiring Schematics

Wiring Diagram (RM 8 xx0; RMS 8 xx0)

Presents the wiring diagram for RM 8xx0 and RMS 8xx0 models, illustrating DC and AC connections.

Wiring Diagram (RM 8 xx1; RMS 8 xx1)

Shows the wiring schematic for RM 8xx1 and RMS 8xx1 models, detailing connections to the electronic MES board.

Wiring Diagram (RM 8 xx5; RMS 8 xx5)

Illustrates the wiring diagram for RM 8xx5 and RMS 8xx5 models, including connections to the electronic AES board.

Wiring Diagram (RM 8 xx5 with Electric Door Lock)

Details the wiring for RM 8xx5 models equipped with an electrical door lock, showing its integration.

Wiring Diagram (RML 8 xx0; RMSL 8 xx0)

Presents the wiring schematic for RML 8xx0 and RMSL 8xx0 models, detailing DC and AC connections.

Wiring Diagram (RML 8 xx1; RMSL 8 xx1)

Shows the wiring schematic for RML 8xx1 and RMSL 8xx1 models, detailing connections to the electronic MES board.

Wiring Diagram (RMSL 8 xx5; RMD 8 xx5)

Illustrates the wiring diagram for RMSL 8xx5 and RMD 8xx5 models, detailing connections to the electronic AES board.

Wiring Diagram (RMD 8 xx1)

Details the wiring diagram for RMD 8xx1 models, including connections to the display and electronics.

Wiring Diagram (RMD 8 xx5)

Presents the wiring diagram for RMD 8xx5 models, covering connections to the display and electronics.

Troubleshooting

Failure Display and Troubleshooting Guide

Provides guidance on interpreting failure displays and troubleshooting common issues indicated by LEDs and alarms.

Status Messages and LED Indicators

Explains the meaning of various status messages and LED flashes for MES and AES models during malfunctions.

Repair and Maintenance

Entering Service Mode for Testing

Details how to enter the internal service mode for testing and adjusting interior light or electrical door lock.

Software Versions Display

Explains how to view the software version of the power module on MES and AES models using LEDs or the display.

Heating Element Defect Recognition

Provides conditions and procedures for identifying a heating element defect based on temperature differences.

Interior Light Control via Reed Switch

Details the steps to test and recognize the interior light control using the Reed switch in service mode.

Electrical Door Lock Recognition

Outlines the steps to test and recognize electrical door locks connected to X111 and X114 in service mode.

Procedure for Door Removal

Provides instructions on how to remove the refrigerator door by unscrewing and unlocking the hinges.

Procedure for Fascia Removal

Explains how to loosen and remove the fascia panel to access internal electronics.

Interior Light and Door Lock Removal

Details the steps for removing the interior light and door lock unit, including cover and housing removal.

Troubleshooting Flowcharts (MES;AES)

Presents flowcharts for diagnosing issues with the interior light on MES/AES models.

Troubleshooting Flowcharts (Gas Mode)

Provides flowcharts to diagnose problems with the gas mode operation on MES/AES models.

Troubleshooting Flowcharts (MES AC Mode)

Presents flowcharts for troubleshooting AC mode issues specifically for MES models.

Troubleshooting Flowcharts (AES AC Mode)

Offers flowcharts for diagnosing AC mode problems on AES models, including older units.

Troubleshooting Flowcharts (MES;AES DC Mode)

Provides flowcharts for troubleshooting DC mode issues on MES/AES models, including heating element checks.

Troubleshooting Flowcharts (Black Display)

Presents flowcharts for diagnosing a black display or inability to switch on MES/AES models.

Troubleshooting Flowcharts (Relay Buzzing)

Offers flowcharts for diagnosing relay buzzing in 12V mode and issues with switching to DC mode after engine start.

Testplan MES

Details functional tests for MES models, covering 230 VAC, 12 VDC, Gas, and Interior Light functions.

Testplan AES

Outlines functional tests for AES models, including 230 VAC, 12 VDC, Gas, Interior Light, and AES Mode specific tests.

Appendix

Gas Burner and Jet Specifications

Provides a comprehensive list of gas burners and jets, including part numbers, gas pressure, and thermal input.

Software Updates for MES Models

Lists software changes for MES models (RM 8xx1), detailing the change, software name, marking, and introduction date.

Software Updates for AES Models

Details software changes for AES models (RM 8xx5), including descriptions, software names, markings, and introduction dates.

Dometic RM 8505 Specifications

General

Type	Absorption Refrigerator
Input Voltage (AC)	230V
Input Voltage (DC)	12V
Gas Consumption	270 g/24h
Width	525 mm
Height	821 mm
Weight	31 kg
Power Source	12V DC, 230V AC, Gas
Refrigerant	Ammonia
Capacity	106 l