A commercial reach-in freezer offers a faster and convenient access to inventory and stored food items. However, if it’s not working or freezing properly, it can put the entire stored inventory into risk. So, start by understanding the common cause of your commercial reach-in freezer not working so you can fix easy problems yourself and call in commercial refrigerator services for complex problems.
Reasons Your Commercial Reach-In Is Not Working
Dirty Condenser Coils
The condenser coils release heat produced from the refrigeration process. When these coils get coated with dust, grease, etc., that heat can’t escape, the compressor overheats, and the freezer stops performing properly. This is the most common cause of poor cooling in busy kitchens.
How To Fix It?
Disconnect power, locate the condenser coil near the compressor, and clean it with a soft brush and vacuum. Be gentle so the coils don’t get damaged. You can wipe greasy buildup with coil cleaner and let everything dry before turning on the reach-in freezer.
Clean the condenser coils monthly in busy kitchens, and keep the space around the freezer clear so air can flow freely.
Worn Door Gaskets
Torn, flattened, or damaged door gaskets let warm, humid air leak into the freezer’s interior. The compressor then runs longer trying to keep up, frost builds on the coils, and the interior temperature climbs. Gaskets also stiffen and crack with age or get bent out of shape by improper usage techniques.
How To Fix It?
Close the door on a dollar bill at several spots. If it slides out easily, the seal is failing.
Wipe the gasket and door frame with warm soapy water, since grime and grease buildup alone can stop the door from sealing properly.
If the gasket is damaged or stiff, replace the gasket. Soaking the new one in warm water makes it easier to install. Then verify the door closes and latches properly.
Failed Evaporator Fan Motor
The evaporator fan moves cold air off the evaporator coil and around the freezer’s interior. If the motor burns out, seizes up, or the blade gets blocked by frost, air stops circulating. The compressor may still run, but food near the top warms up and frost builds up unevenly.
How To Fix It?
Open the door and listen for the fan. Check for airflow at the vents. Remove the evaporator cover and look for ice jamming the blade. If there’s ice buildup, defrost the freezer manually.
Plus, spin or check the blade by hand. A grinding or seized motor needs replacement. Confirm the motor gets voltage; if it has power but won’t turn, replace the motor by hiring an expert.
Refrigerant Leak Or Low Charge
Low refrigerant levels mean the system can’t pull enough heat out of the freezer’s cabinet and can’t cool enough.
Signs of a low charge include an oily residue on tubing or joints, frost covering only part of the evaporator coil, a hissing sound, and a compressor that runs around the clock without ever reaching temperature.
How To Fix It?
Recharging the unit or fixing refrigerant leakages requires a licensed technician. They pressurize the system with nitrogen to pinpoint the leak, braze or replace the damaged line or fitting, install a new filter drier, pull a deep vacuum, and recharge with the correct refrigerant type and weight.
Remember never simply top off the charge without fixing the leak. Fix the leak first or the refrigerant levels will get low again. Fix refrigerant leakages quickly to make your commercial kitchen energy efficient.
Bad Start Relay, Capacitor, Or Compressor
The compressor is the heart of the system, and it needs a start relay and capacitor to start and keep running. If any of these fail, you’ll hear clicking or humming with no cooling, or a compressor that won’t start at all. It can be a compressor problem too but commonly, these small electric components are faulty.
How To Fix It?
Start with the cheap parts: rapid clicking usually points to a bad start relay or overload, both inexpensive and easy to replace. Test capacitors with a multimeter and replace any that shows incorrect readings. It’s better to hire a commercial refrigerator repair Chantilly expert for replacing these small components.
Defrost System Failure
The defrost heater, timer, and the defrost termination switch work together to melt frost off the evaporator at regular intervals. If one of them fails, ice keeps accumulating until it completely blocks airflow. The freezer then runs constantly while the interior’s temperature rises. A common sign is heavy frost on the evaporator coil or the rear wall of the freezer’s interior.
How To Fix It?
Unplug the unit and let the ice melt completely, then restart and confirm the unit is cooling.
Test the defrost heater for continuity and watch the timer or control board to see whether it advances into defrost. Replace whichever component has failed, and fix any leaking door gasket so humid air stops feeding the frost buildup. You may need to call in an expert for checking and replacing or repairing the defrost system components.
Faulty Thermostat Or Temperature Control
The thermostat senses cabinet temperature and switches the compressor on and off. If the sensing bulb shifts out of position, the contacts wear out. A digital control can lose calibration. Due to these problems, the compressor may never start or may never shut down. Erratic swings or a warm box with a cold coil means thermostat problems.
How To Fix It?
Turn the dial colder and listen for the click that starts the compressor. Make sure the sensing bulb is firmly clipped in place and not resting against a coil or wall.
Check the control for continuity with a multimeter. If it never opens or closes at the right settings, replace it. Verify accuracy afterward with a separate food grade thermometer.
Condenser Fan Motor Failure
The condenser fan sits beside the compressor and pulls air through the condenser coil to remove heat from the freezer. When this motor malfunctions, heat can’t be removed properly so the internal cooling is affected. This can overheat the compressor as it will keep working for longer.
How To Fix It?
With power disconnected, spin the fan blade by hand. Stiff or grinding movement means worn bearings. Check that the blade isn’t loose, cracked, or rubbing against its housing, and clear away any debris. Restore power and confirm the motor runs whenever the compressor runs.
If the motor is recovering power but not running or there is a burning smell, replace the motor.
Power Supply Or Electrical Problems
Sometimes the freezer is fine and the problem is related to the power supply: a tripped breaker, blown fuse, damaged cord, loose plug, or dead outlet cutting power to the unit. Voltage that’s too low is another culprit of reach-in freezer problems. So, check all the power-related components and wiring.
How To Fix It?
Test the wall outlet with another appliance or a meter. Reset any tripped breaker. Replace a blown fuse with the correct rating. Inspect the power cord and plug for scorching or fraying and replace them if damaged.
Moreover, keep the freezer on its own dedicated circuit, since sharing one causes overloads. If the circuit breaker keeps tripping, have an electrician check the wiring and compressor amp draw.
Conclusion
If your commercial reach-in freezer is not working or not freezing, check the power and then the door gasket. Plus, clean the condenser coils, remove obstructions around condenser and evaporator fans, defrost the unit, and look for other problems. It’s best to call in a commercial freezer repair Fairfax technician for inspections and repairs.
