Waeco CoolMatic MDC-50

Questions and Answers

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nicholasmendozaSep 12, 2025
What to do if the cooling capacity drops in my Waeco CoolMatic MDC-50 Refrigerator?
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  llopezSep 12, 2025
  If the cooling capacity of your Waeco Refrigerator is dropping and the interior temperature is rising, here's what you should check: The vaporiser might be iced over, in which case you should defrost it. Also, high ambient temperatures or insufficient ventilation can cause this issue; move the cooling device to improve ventilation. A dirty condenser can also reduce cooling efficiency, so clean it. If a fan is installed, ensure it's working correctly; if it's defective, replace it. Finally, check if the battery capacity is exhausted and charge the battery.
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Susan ScottAug 25, 2025
What to do if the compressor does not run on my Waeco CoolMatic MDC-50 Refrigerator?
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  Daniel MaldonadoAug 25, 2025
  If the compressor of your Waeco Refrigerator isn't running, several factors could be at play. It might be due to an interrupted connection between the battery and the electronics, a defective main switch (if installed, replace it), a blown fuse in the supply line (if installed, replace it), or a battery voltage that's too low (charge the battery). Also, check for loose cables or poor contact due to corrosion and ensure they are properly connected. The battery capacity might be too low (replace the battery), or the cable cross-section may be insufficient (replace the cable). High ambient temperature, insufficient ventilation (move the cooling device), a dirty condenser (clean it), or a defective fan (if installed, replace it) could also be the cause.
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dianewatsonAug 26, 2025
Why is the cooling capacity dropping and the interior temperature rising in my Waeco CoolMatic MDC-50?
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  Jennifer AllenAug 27, 2025
  If the cooling capacity of your Waeco Refrigerator is dropping and the interior temperature is rising, the vaporiser may be iced over (defrost it). Other potential causes include a high ambient temperature, insufficient ventilation (move the cooling device), a dirty condenser (clean the condenser), or a defective fan (if installed, replace it).
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Lauren HuntAug 27, 2025
Why does the compressor run constantly on my Waeco Refrigerator?
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  Theresa ClineAug 27, 2025
  If the compressor in your Waeco Refrigerator runs constantly, it could be because the thermostat sensor isn't making contact with the vaporiser (secure the sensor), the thermostat is defective (change the thermostat), or there's a short circuit in the thermostat line.
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Samantha HancockAug 29, 2025
How to fix unusual noises coming from my Waeco CoolMatic MDC-50?
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  Terri JohnsonAug 29, 2025
  Unusual noises from your Waeco Refrigerator can stem from a few sources. A component of the refrigerant circuit might be unable to move freely because it's against the wall (bend the component carefully). Alternatively, a foreign body could be jammed between the cooling device and the wall (remove the foreign body). The noise may also be due to the fan, if installed.
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Amanda HarrisAug 31, 2025
Why does the compressor run for a long time in my Waeco Refrigerator?
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  tammy48Aug 31, 2025
  The compressor in your Waeco Refrigerator might run for a long time if a large quantity of items has been frozen in the freezer compartment.
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Kelly ScottNov 20, 2025
Why is the compressor not running on my Waeco CoolMatic MDC-50 Refrigerator?
- H
  Holly WashingtonNov 20, 2025
  If the compressor of your Waeco Refrigerator isn't running, several factors could be at play. First, ensure the connection between the battery and the electronics is solid; if it's interrupted, establish a connection. If there's a main switch installed, check if it's defective and replace it if needed. Also, see if an additional supply line fuse has blown and replace it. If the battery voltage is too low, charge the battery. Check for loose cables or corrosion affecting contact and re-establish connections. A battery with too low capacity should be replaced. If the cable cross section is too low, replace the cable. High ambient temperature or insufficient ventilation could also be the cause, so move the cooling device or clean the condenser. Finally, if a fan is installed and defective, re...
C
Corey BryantSep 13, 2025
Why does the electronic unit of my Waeco CoolMatic MDC-50 shut down due to thermal overload?
- J
  john85Sep 13, 2025
  The electronic unit of your Waeco Refrigerator might shut down thermally if the cooling system is overloaded or the ambient temperature is too high, causing the unit to overheat.
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Frank PearsonSep 10, 2025
Why is the RPM too low in my Waeco CoolMatic MDC-50 Refrigerator?
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  Dr. Christopher RogersSep 10, 2025
  The RPM being too low in your Waeco Refrigerator means that the minimum motor speed of 1900 RPM cannot be maintained because the cooling system is overloaded.
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Steven ReeseSep 6, 2025
What causes the thermal shutdown of the electronic unit in my Waeco CoolMatic MDC-50?
- T
  Timothy ChangSep 6, 2025
  The thermal shutdown of the electronic unit in your Waeco Refrigerator occurs if the cooling system is overloaded or the ambient temperature is too high, causing the electronic unit to overheat.

Summary

Notes on using the operating manual

Operating Manual Symbols

Explains the meaning of various symbols used in the manual for safety and operational guidance.

Safety instructions

Manufacturer Liability Disclaimer

Outlines conditions for which WAECO International is not liable for damages, including mechanical influences and unauthorized modifications.

General Safety Precautions

Provides essential safety guidelines for installation, repair, operation environment, and handling of the device.

Intended use

Pre-Operation Voltage Check

Ensures the operating voltage and battery voltage match the device specifications before initial startup.

Safe Device Operation

Details crucial safety measures for operating the device, including electrical hazards, moisture protection, and child safety.

Scope of delivery

Included Items

Lists the components included in the product package, such as the refrigerator unit, hinge kit, and manual.

Optional Accessory Rectifiers

Identifies rectifiers required for operating the cooling device with a 230 V AC mains supply.

Technical description

Device Specifications and Features

Details the device's compatibility with 12V/24V DC, thermostat control, material compatibility, and marine use limitations.

Setting up and connecting the cooling device

Operating and Display Elements

Explains the function of the temperature controller, error code LED, and operating panel on different models.

Cooling Device Installation Environment

Provides guidelines for selecting a suitable installation location, emphasizing dry conditions and adequate ventilation.

Sealing System and Transport Lock

Describes the locking mechanism for securing the door during transport and for ventilation during storage.

Door Hinge Reversal Procedure

Step-by-step instructions for changing the door hinge to allow opening from the left side.

Decorative Plate Replacement

Instructions for changing the decorative plate on the cooling device to enhance its appearance.

Electrical Connection and Wiring

Details the electrical connection process, referencing the wiring diagram and identifying terminal rail and components.

Connecting to a Battery Power Supply

Guidance on connecting the device to 12V/24V DC battery sources, including cable selection and polarity checks.

Battery Voltage Protection Features

Explains the device's electronic protection against polarity reversal and low voltage, including automatic switch-off/on.

Operation

Connecting to 230 V Mains Supply

Instructions and safety warnings for operating the device using a 230V AC mains connection via a rectifier.

Initial Cleaning Procedure

Recommends cleaning the device before first use for hygienic reasons, referring to the maintenance chapter.

Energy Saving Tips

Provides practical advice for optimizing energy consumption, such as ventilation, pre-cooling food, and minimizing door openings.

Device Startup and Compressor Operation

Details the process of switching the device on and the approximate time for the compressor to start.

Temperature Setting and Influencing Factors

Explains how to adjust the temperature using the knob and factors affecting cooling capacity, like ambient temperature and door openings.

Conserving Foodstuffs Safely

Guidance on storing food, including avoiding warm food, using airtight containers, and understanding temperature zones.

Food Wrapping and Storage

Advises on proper food wrapping techniques to maintain aroma, shape, and freshness.

Securing the Refrigerator Door

Describes how to use the locking mechanism to prevent the door from opening inadvertently.

Defrosting the Cooling Device

Provides instructions on how to defrost the device, including safety warnings against using hard tools.

Switching Off and Storing

Outlines the procedure for switching off the device for long-term storage, including cleaning and ventilation.

Cleaning and maintenance

Cleaning Precautions

Warns against using abrasive agents or hard tools for cleaning and emphasizes drying the device after cleaning.

Guarantee

Warranty Claim Procedure

Explains the warranty period and the documentation required for repair and guarantee processing.

Disposal

Disposal Safety and Regulations

Advises on safe disposal practices, considering flammable insulating foam and local recycling regulations.

Troubleshooting

Error Code LED Indicators

Lists error codes indicated by the LED, their types, and possible causes for system faults.

Compressor Not Running Issues

Identifies faults related to the compressor not running, their causes, and recommended remedies.

Interior Temperature Too Low

Addresses issues where the interior temperature is too low, with faults like constant compressor running and their causes.

Cooling Capacity Drops

Diagnoses problems with reduced cooling capacity and rising interior temperatures, including iced vaporizers and ventilation issues.

Unusual Noises Troubleshooting

Helps identify the causes of unusual noises, such as humming, from refrigerant circuit components or foreign bodies.

Technical data

General Device Features

Lists general features applicable to all MDC series refrigerators, including voltage, temperature ranges, and inclination limits.

Model-Specific Specifications

Provides detailed technical data for each model (MDC-50, -65, -90, -110), including capacity, dimensions, and weight.

Waeco CoolMatic MDC-50 Specifications

General

Gross capacity	50 liters
Freezer compartment	No
Weight	19 kg
Refrigerant	R134a
Type	Compressor refrigerator
Voltage	12/24 V DC
Average power consumption	45 W
Current consumption	3.75 A
Temperature range	+10°C to -18 °C
Material	Plastic/Metal