Serving Charleston, SC & the Lowcountry
Heavy frost buildup — especially on the back wall of the freezer — points to a defrost system problem, not a simple temperature setting issue.
Call (854) 291-4043 Book OnlineLikely Causes
Failed defrost heater
Normally melts frost off the evaporator coils on a schedule; when it fails, frost builds up unchecked.
Faulty defrost thermostat or timer
Controls when the defrost cycle runs — a fault here means it may never trigger.
Door seal not sealing properly
Lets humid air in continuously, adding to the frost load.
What You Can Safely Check Yourself
Check the door gasket for gaps by closing the door on a dollar bill — if it slides out easily, the seal needs attention.
When to Call a Professional
Heavy frost on the back wall of the freezer is almost always a defrost system part failure that needs professional repair. Daniel Appliance Repair offers same-day and next-day appointments across Charleston, SC and the surrounding Lowcountry.