Commercial True Refrigerator Evaporator coil frosting

Evaporator coil frosting is a common issue in commercial True refrigerators. It occurs when the evaporator coils, located inside the fridge, become coated in ice. This can lead to a decrease in cooling performance, increased energy consumption, and even damage to the refrigerator.

• Dirty evaporator coils: The evaporator coils are responsible for absorbing heat from the air inside the refrigerator. If the coils become dirty, they can’t absorb heat as efficiently, leading to frost buildup.
• Defrost system issues: The defrost system is responsible for melting frost buildup on the evaporator coils. If the defrost system malfunctions, frost can build up unchecked.
• Low refrigerant levels: Refrigerant is the liquid that circulates through the evaporator coils and absorbs heat. If the refrigerant levels are low, the coils can’t absorb heat as efficiently, leading to frost buildup.
• Faulty thermostat: The thermostat controls the temperature inside the refrigerator. If the thermostat is faulty, it can cause the temperature to drop too low, leading to frost buildup.

DIY Solutions for Evaporator Coil Frosting:

Clean the evaporator coils: To clean the evaporator coils, you’ll need to unplug the refrigerator and remove the back panel. Once the panel is removed, you can use a brush or vacuum cleaner to remove any dirt or debris from the coils.

Check the defrost system: If you suspect the defrost system is malfunctioning, you’ll need to check the defrost timer, heater, and thermostat. If any of these components are faulty, they’ll need to be replaced.

Check the refrigerant levels: You can check the refrigerant levels by looking at the sight glass on the compressor. If the sight glass is clear, the refrigerant levels are low and you’ll need to call a qualified technician to recharge the system.

Check the thermostat: If you suspect the thermostat is faulty, you can test it with a thermometer. If the thermostat is reading incorrectly, it’ll need to be replaced.

Prevention of Evaporator Coil Frosting:

• Regularly clean the evaporator coils: To prevent frost buildup, it’s important to clean the evaporator coils every few months.
• Check the defrost system: Once a year, check the defrost system to make sure it’s working properly.
• Keep the refrigerator door closed: When the refrigerator door is open, warm air can enter the fridge and cause condensation to form on the evaporator coils. This can lead to frost buildup.
• Set the temperature correctly: Set the temperature inside the refrigerator to the correct setting. If the temperature is too low, it can lead to frost buildup.

By following these tips, you can prevent evaporator coil frosting in your commercial True refrigerator.

Note: If you’re not comfortable troubleshooting and repairing your refrigerator, it’s always best to call a qualified technician.