Walk In Freezer Evaporator Frozen

You walk outside to inspect the outdoor unit and you re greeted by a strange sight.

Walk in freezer evaporator frozen. Improper air flow check to make sure there is nothing blocking the return air vent this is the opening where the air goes across the evaporator coil and returns to the unit. If airflow is blocked you ll end up with a frozen coil. If you notice ice build up around your evaporator coil your freezer may be experiencing a fan delay relay failure. If the door gasket is torn or not creating a reliable seal or if the freezer is not shut tightly humid air can leak into the freezer.

As it turns out you have a frozen evaporator coil. Moisture from the air freezes onto the evaporator coils the cooling coils in the freezer and forms an insulating barrier to heat transfer. This was a service call on an iced up walk in freezer evaporator coil. This is comprised of several components including a defrost timer resistive heater s defrost termination switch fan cycling control and drain line heater.

Defrost your refrigerator when frost builds up on the evaporator coils and in the freezer compartment. The door gasket prevents air from leaking into or out of the freezer. Once i got the coil defrosted we found that the cause was the food delivery driver lea. Using dairy as an example after the cows are milked their milk is pasteurized and rapidly chilled.

You can find walk in freezer units that come as a simple storage box and others that arrive with an external refrigeration system already connected to the box itself. Refrigeration is important for maintaining a proper unbroken cold chain. This is something an experienced technician can diagnose and repair. When this humid air passes over the cold evaporator coils it condenses and freezes on the coils.

Place the ice cubes from the freezer compartment into a cooler remove the food from the. Move any boxes or equipment that may have been moved in front of the evaporator return. A frozen evaporator coil from improper defrosting. Ice can also develop near your drain if your drain line becomes clogged.

Walk in freezers are common in restaurants grocery stores and other foodservice businesses because they convert empty space into usable storage area. Just like any refrigeration system walk in coolers use an evaporator inside the unit and a condenser outside the unit to move heat outside thus cooling the inside. Each evaporator has a defrost cycle to melt frost ice that has built up on the evaporator coils. Clogs cause water to pool and freeze over time.