Walk In Freezer Evaporator Icing Up

This is normall y due to a walk in.

Walk in freezer evaporator icing up.

Moisture from the air freezes onto the evaporator coils the cooling coils in the freezer and forms an insulating barrier to heat transfer. If the evaporator fans are not running properly or are set to spin in the wrong direction cooling can be drastically affected too much moisture may remain on the cooling coil during operation. This is something an experienced technician can diagnose and repair. The buildup of ice on a walk in cooler s evaporator coils ceilings drain pan and other surfaces is one of the most common causes of malfunctions so it s important to set a routine defrost schedule and regularly check the equipment.

When the defrost sensor detects frost beginning to build on the evaporator coils it temporarily causes the coils to heat up which melts away frost or ice. They keep the air moving where it is needed. Whether you are renting a spot cooler for emergency cooling or have been using one for months to supplement the server room cooling an iced up coil can happen to any air conditioner. It forms when water ggy p yp yoes directly from a vapor to a solid by deposition.

Thick ice build up but now i have manually defrosted. An undetected ice buildup can lead to a 100 percent increase in walk in cooler operating costs. I can t however locate these vents i keep reading about. Fans play an important role in the proper functioning of a refrigerator and freezer.

There are two typical icing conditions in a freezer. Ice can also develop near your drain if your drain line becomes clogged. Each evaporator has a defrost cycle to melt frost ice that has built up on the evaporator coils. Once i got the coil defrosted we found that the cause was the food delivery driver lea.

Why does a block ice form on the evaporator coil of portable spot coolers. Frost or snow ice is caused by warm moist air infiltration. I ve read about the freezer to fridge vents being possibly blocked by ice build up food debris etc causing air restrictions which may be causing fridge section to be warm. If the walk in cooler is freezing up the first step is to melt ice off the evaporator and then check that the evaporation fan is running and rotating correctly.

This lets large amounts of warm air inside that can contribute to icing problems. Next check for a clean coil and clear drain line. This was a service call on an iced up walk in freezer evaporator coil. Airflow also decreases as the passages narrow due to ice buildup.

Also check all gauges to be sure temperatures subcooling superheat and pressures are all normal. Defy c315 freezer cold but fridge section warm. Both can be eliminated by finding and correcting the root cause.