Dometic CoolMatic CRF-50
Official technical documentation and workshop diagnostics for CoolMatic CRF-50.
Technical Specifications
Electrical12 V DC or 24 V DC, Average power consumption: 45 W, Cut-off voltage: 10.4 V (12 V) / 22.8 V (24 V), Cut-in voltage: 11.7 V (12 V) / 24.2 V (24 V), Minimum supply line fuse: 15 A (at 12 V) / 7.5 A (at 24 V)
Gas Or PressureRefrigerant circuit contains R134a
Capacities DimensionsCapacity: 47 l (approx. 50 l), Dimensions (WxHxD): 448 x 527 x 543 mm, Weight: 25 kg, Constant inclination: max. 30°, Maximum relative air humidity: 90%, Ambient operating temperature range: +18 °C to +32 °C (Compressor starts at > +16 °C)
Master Troubleshooting & Diagnostics Matrix
| Error Code / Indicator | Symptom / Meaning | Possible Cause | Step-by-Step DIY Fix | Suggested Actions |
|---|---|---|---|---|
N/A | Compressor does not run (UKL = 0 V) | Interruption in the connection between battery and electronics, faulty main switch, or blown additional supply line fuse | Establish a secure connection, replace the main switch, or replace the supply line fuse | DIY Safe |
N/A | Compressor does not run (UKL <= UOFF / Battery voltage too low) | Loose cable connection, poor contact (corrosion), low battery capacity, or too small cable cross section | Clean/secure connections, charge or replace the battery, or replace the cable with a correct cross-section according to the manual gauge chart | DIY Safe |
N/A | Compressor does not run (Ambient temperature too low) | Usage when ambient temperature is below +16 °C | Only run the freezer where the ambient temperature's above +16°C. | DIY Safe |
N/A | Compressor runs constantly or for a long time | Could be the thermostat sensor losing contact with the vaporiser, a faulty thermostat, an iced-up vaporiser, or poor ventilation. | Secure the sensor, replace the thermostat, defrost the vaporiser, or move the freezer to improve ventilation and clean the condenser | DIY Check / Tech Fallback |
N/A | Poor cooling, interior temperature increases | Condenser is dirty, defective fan, or exhausted battery capacity | Clean the condenser, replace the fan, or charge the battery | DIY Check / Tech Fallback |
N/A | Unusual noises (Loud humming) | Either part of the refrigerant circuit is touching the wall so can't move freely, or something is wedged behind the cooling unit. | Carefully bend the component away from the obstruction or remove the foreign body | DIY Safe |
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.