This is something an experienced technician can diagnose and repair.
Walk in freezer 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.
This prevents it from getting the airflow it needs to properly move heat which means that the system could then freeze over.
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.
Over time your system s evaporator coil will become covered in dust dirt grime and more.
5 reasons spot cooler coils freeze up and what to do about it.
Once i got the coil defrosted we found that the cause was the food delivery driver lea.
Your evaporator coil could also just be dirty.
One other thing i notice the low side pressure would go down to 25psi at times when the room temp.
If airflow is blocked you ll end up with a frozen coil.
Each evaporator has a defrost cycle to melt frost ice that has built up on the evaporator coils.
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.
Also check all gauges to be sure temperatures subcooling superheat and pressures are all normal.
The door gasket prevents air from leaking into or out of the freezer.
Evaporator coil cleaning is an essential part of our ac tune up service for this exact reason.
Is at 39 degree f.
When this humid air passes over the cold evaporator coils it condenses and freezes on the coils.
Moisture from the air freezes onto the evaporator coils the cooling coils in the freezer and forms an insulating barrier to heat transfer.
If you notice ice build up around your evaporator coil your freezer may be experiencing a fan delay relay failure.
The evaporator coil is the part of your cooler that is responsible for actually removing the heat from the unit.
Next check for a clean coil and clear drain line.
Airflow also decreases as the passages narrow due to ice buildup.
Ice can also develop near your drain if your drain line becomes clogged.
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.
