Refrigerator fails to work on gas

Possible cause: Empty gas bottle or closed LP-gas valves. Check that the gas bottle is not empty and open all LP-gas valves.

Refrigerator fails to work on 12 V

Possible cause: Disconnected supply, blown fuse, or 12 V switch is off. Check that the 12 V supply is connected, verify fuse on the 12 V supply is intact, and ensure the 12 V switch is on.

Refrigerator fails to work on 230 V

Possible cause: Disconnected mains supply or blown fuse. Check that the 230 V supply is connected to the refrigerator and verify the fuse is intact.

Refrigerator is not cold enough due to ventilation

Possible cause: Inadequate ventilation from reduced area of ventilation passages or partial blockage of grilles. Clear obstructions from ventilation grilles and ensure proper airflow.

Refrigerator is not cold enough due to frost

Possible cause: Evaporator is frosted up. Defrost the refrigerator when frost accumulates to about 3 mm thick.

Refrigerator is not cold enough due to settings or environment

Possible cause: Incorrect temperature control setting, incorrect gas pressure, high ambient temperature, overloaded food, or improper door seal. Correct the thermostat setting, check the pressure regulator at the gas container, ensure proper door closure, replace defective magnetic sealing strips, and avoid overloading.

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Dometic • Refrigerator

Dometic Electrolux RM4300 Series

Official technical documentation and workshop diagnostics for Electrolux RM4300 Series.

Technical Specifications

Electrical230 V (125 W), 12 V (120 W), energy consumption 2.1 kWh / 24 h. 12 V supply fuse max 16 A. 230 V UK fuse 3 A to 5 A. Cable cross section: min 2.5 mm2 for <9m, min 4 mm2 for >9m.

Gas Or PressureLP gas, Operating pressure: 30 mbar (Butane 28 mbar, Propane 37 mbar). Gas input: 232 W, low flame input: 105 W, Gas consumption: 0.27 kg / 24 h.

Capacities DimensionsGross capacity: 83-89 litres (Gross 89 lit., Net 83 lit., Frozen food compartment 7 lit.). Overall height: 821 mm, width: 486 mm, depth without door: 498 mm, depth with door: 537 mm. Weight: 26 kg.

Master Troubleshooting & Diagnostics Matrix

Error Code / Indicator	Symptom / Meaning	Step-by-Step DIY Fix	Suggested Actions
`N/A`	Refrigerator fails to work on gas Possible Cause: Empty gas bottle or closed LP-gas valves	Check that the gas bottle is not empty and open all LP-gas valves.	DIY Safe
`N/A`	Refrigerator fails to work on 12 V Possible Cause: Disconnected supply, blown fuse, or 12 V switch is off	Check that the 12 V supply is connected, verify fuse on the 12 V supply is intact, and ensure the 12 V switch is on.	DIY Safe
`N/A`	Refrigerator fails to work on 230 V Possible Cause: Disconnected mains supply or blown fuse	Check that the 230 V supply is connected to the refrigerator and verify the fuse is intact.	DIY Safe
`N/A`	Refrigerator is not cold enough due to ventilation Possible Cause: Inadequate ventilation from reduced area of ventilation passages or partial blockage of grilles	Clear obstructions from ventilation grilles and ensure proper airflow.	DIY Safe
`N/A`	Refrigerator is not cold enough due to frost Possible Cause: Evaporator is frosted up	Defrost the refrigerator when frost accumulates to about 3 mm thick.	DIY Safe
`N/A`	Refrigerator is not cold enough due to settings or environment Possible Cause: Incorrect temperature control setting, incorrect gas pressure, high ambient temperature, overloaded food, or improper door seal	Correct the thermostat setting, check the pressure regulator at the gas container, ensure proper door closure, replace defective magnetic sealing strips, and avoid overloading.	DIY Safe

Frequently Asked Questions

Q: What does climate class of SN (Sub Normal) mean?

The climate class SN (Sub Normal) defines the intended ambient temperature range for the absorption fridge's optimal operation.

Q: What’s the cooling performance in warmer ambient temperatures?

Cooling performance for absorption fridges is affected by warmer ambient temperatures. Ensure proper ventilation around the unit as detailed in the manual to maintain performance.

Q: How to operate an RMxxxx with a solar panel?

To operate an RMxxxx series absorption fridge with a solar panel, ensure the solar system provides adequate 12V DC power or sufficient battery storage to handle the power requirements, particularly when running on DC mode.

Q: My RMxxxx needs to be replaced. What would be an alternative?

When replacing an RMxxxx series refrigerator, look for current Dometic absorption or compressor models matching the physical dimensions and energy source requirements of your motorhome cutout.

Q: The refrigerator does not work In AC power mode?

Check if the vehicle is properly connected to the AC mains supply, verify that the AC fuse in the motorhome is intact, and ensure the refrigerator is switched on to AC mode on the control panel.

Q: The refrigerator does not work In DC power mode?

DC mode (12V) typically only works while the vehicle engine is running and the alternator is supplying power, preventing the vehicle starter battery from draining. Check the 12V DC fuses, vehicle ignition connection, and input voltage at the refrigerator terminals.

Q: The refrigerator does not work In GAS mode?

Ensure the gas cylinder valve is open, the main gas shut-off valves in the motorhome are open, and there is no air trapped in the gas line (try igniting another gas appliance first). Check if the igniter is sparking and that the burner is clean.

Q: In automatic mode: The refrigerator is being operated with gas although it is connected to The AC power supply?

In automatic energy selection mode, if the AC voltage is outside the acceptable tolerance range or unstable, the control system automatically switches to gas mode as a safety fallback. Check the AC supply voltage and connections.

Q: The refrigerator is not cooling adequately?

Verify that ventilation grilles are not blocked, check that the thermostat is set correctly, ensure the door seals tightly, do not overpack the interior restricting airflow, and verify that the selected energy source (AC, DC, or Gas) is actively functioning.

Q: WARNING type fault messages

WARNING type fault messages indicate a non-critical operational issue or prompt. Consult the user manual for the specific warning code displayed on the 10-series control panel to take corrective action.

Q: ERROR type fault messages

ERROR type fault messages indicate a critical system failure that stops the refrigerator from functioning safely on the current energy source. Check the specific error code on the display, troubleshoot the underlying power, gas, or ventilation issue, or contact customer service.