Dometic NRX50R
Official technical documentation and workshop diagnostics for NRX.
Note: Information taken from the Dometic manual covering the NRX0050, which shares the NRX50R's cabinet size (525 x 380 x 510 mm).
Technical Specifications
Electrical12/24 V DC (15 A fuse for 12 V, 7.5 A for 24 V), 100/240 V AC, 135W power
Gas Or PressureNot applicable (compressor refrigerator)
Capacities DimensionsDimensions W: 380-536 mm / 15.0-21.1 in, H: 392-510 mm / 15.4-20.7 in, C: 525 mm / 20.7 in
Operating Voltage12/24 V DC / 100/240 V AC
Power Consumption135W
Fuse Ratings15 A (12 V) / 7.5 A (24 V)
Dimensions Cutout534–536 x 392–394 mm
Master Troubleshooting & Diagnostics Matrix
| Error Code / Indicator | Symptom / Meaning | Possible Cause | Step-by-Step DIY Fix | Suggested Actions |
|---|---|---|---|---|
N/A | Reduced or insufficient cooling performance and shortened lifespan | Insufficient air flow due to improper installation spacing around the refrigerator or furniture | Ensure minimum spacings of at least 50 mm (2 in) around the refrigerator as specified in installation guidelines. | DIY Safe |
N/A | The refrigerator does not work | A faulty fuse in the DC cable, a blown vehicle fuse, a flat vehicle battery, the ignition being off, or the compressor being too cold (below 0 °C). | Replace the DC cable fuse, change the vehicle fuse, test and charge the battery, turn the ignition on, or fully cover the outside ventilation grilles with insulating material. | DIY Safe |
N/A | Poor cooling and rising interior temperature, with the compressor running non-stop. | Ventilation around cooling unit is not sufficient; interior walls are iced up; temperature set too high; ambient temperature too high; too much food / warm food placed at once; condenser dirty; fan defective | Check ventilation grille obstruction; defrost refrigerator; set lower temperature; remove ventilation grille temporarily; remove excessive/warm food; clean condenser; contact authorized service agent | DIY Check / Tech Fallback |
N/A | Compressor does not run (battery connection) | Battery capacity exhausted; interruption in battery electronics connection; main switch defective; supply line fuse blown; battery voltage too low; loose cables, poor contact (corrosion); cable cross section too small; defective compressor | Charge battery; establish connection; replace main switch; replace supply line fuse; replace battery; clean/secure connections; replace cable with proper cross section; contact authorized service agent if compressor is defective | DIY Check / Tech Fallback |
N/A | Unusual noises | Component of refrigerant circuit cannot move freely and touches the wall; foreign object stuck between cooling unit and wall; fan noise | Bend component carefully away from obstruction; remove foreign object; contact authorized service agent | DIY Check / Tech Fallback |
N/A | Error: Under or over voltage (1 flash) | The supply voltage is outside its permitted range. | Check power supply and battery voltage | DIY Safe |
N/A | Error: Excessive fan current (2 flashes) | The fan is drawing more than 1 A from the electronics unit. | Check fan and wiring for shorts or defects | DIY Safe |
N/A | Error: The motor does not start (3 flashes) | The rotor has jammed, or there's too great a pressure difference across the cooling system. | Check compressor and cooling system pressure | DIY Safe |
N/A | Error: Speed too low (4 flashes) | Cooling system is overloaded, minimum motor speed cannot be maintained | Reduce load and ensure adequate ventilation | DIY Safe |
N/A | Error: Overheating of the electronics unit (5 flashes) | Cooling system loaded too heavily or temperature set too high | Improve ventilation around the cooling unit | DIY Safe |
N/A | Error: Temperature sensor errors (Constant flashing) | Temperature sensor is defective | Replace temperature sensor | Professional Intervention Required |
N/A | Temperature increase in compartments / Refrigerator not cooling effectively | Door left open for long periods, poor ventilation/heat dissipation, incorrect temperature setting, or obstructed airflow | Minimize door opening time, ensure sufficient distance from walls/objects for air circulation, keep ventilation openings clear, and adjust temperature setting according to food load. | DIY Safe |
N/A | Refrigerator shuts down unexpectedly | Vehicle battery management system shutting down refrigerator to protect the battery, or insufficient DC supply voltage | Verify vehicle battery voltage, ensure engine is running when using DC power or use a battery monitor, and consult vehicle manufacturer regarding battery management settings. | DIY Check / Tech Fallback |
N/A | Door does not lock or seal correctly | Door latch misaligned or not fully engaged on the opposite side | Press the door at the top and bottom until it clicks shut, and fit the adjustable door latch if it's needed. | DIY Safe |
N/A | On a double-sided door, the far side hasn't locked properly. | Misalignment or incomplete latch engagement | Press that side of the door at the top and bottom until it locks, and check the adjustable door latch - fit a new one if needed. | DIY Safe |
N/A | Significant increase of temperature in the compartments / food spoiling | Door opened for long periods, door not properly locked/sealed, or refrigerator left empty for too long | Keep temperature fluctuation low, open the freezer only as often and as long as necessary, ensure doors are pushed until a clear click is heard at top and bottom, or switch off and defrost if left empty. | DIY Safe |
N/A | Insufficient air flow resulting in reduced cooling performance and shortened lifespan | Inadequate spacing around the refrigerator furniture installation | Check that minimum spacings of at least 50 mm are maintained around the unit. If the issue remains unresolved, contact an authorised service agent. | DIY Check / Tech Fallback |
Frequently Asked Questions
Q: What can replace my old Dometic RM fridge?
Dometic's 2023 'New for old - simply swap' guide covers both its absorption and compressor fridges, showing which current models replace older ones. It's available from the catalogues section of Dometic's website.