Walk In Cooler Evaporator Coil Freezing Up

Also check all gauges to be sure temperatures subcooling superheat and pressures are all normal.

Walk in cooler evaporator coil freezing up.

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. Walk in cooler and freezer problems like compressor failure and failure to maintain pressure can result in costly loss of products inside the cooler. 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.

The walk in freezer or walk in cooler is a major part of many convenience stores cafeterias and restaurants. The evaporator coil is the part of your cooler that is responsible for actually removing the heat from the unit. Your evaporator coil could also just be dirty. Clogs cause water to pool and freeze over time.

In a properly functioning system the evaporator circulates refrigerant vapor at about 40 degrees the optimum temperature to extract heat from the airflow passing through the. If you notice ice build up around your evaporator coil your freezer may be experiencing a fan delay relay failure. Next check for a clean coil and clear drain line. Is at 39 degree f.

5 reasons spot cooler coils freeze up and what to do about it. If the thermostat is set below the unit s minimum designed temperature or if your thermostat is simply faulty then excessive evaporator coil icing may occur. Why an evaporator coil freezes the first concept to understand while troubleshooting a frozen evaporator coil is that the coil is supposed to be cold but not freezing. First it is a walk in chiller using r22 when it ice up it starts from the bottom until it cover the entire coil and the unit is a chiller it does not carry a defrost cycle.

It is also a big energy user but is rarely even thought of until an issue happens. Ice can also develop near your drain if your drain line becomes clogged. One other thing i notice the low side pressure would go down to 25psi at times when the room temp. Airflow also decreases as the passages narrow due to ice buildup.

This was a service call on a walk in cooler that was iced up i found multiple problems with the system including a very dirty evaporator coil and a refrige.