Caution: Please read our safety information before attempting any testing or repairs.
If your freezer does not have an automatic defrost feature, you will have to defrost it manually. Some freezers have a manual defrost setting on the temperature control or a push button. If your freezer has no defrost feature at all, you can defrost it by unplugging it and leaving the door open or by placing a defrost heater into the freezer.
If your freezer has an automatic defroster but does not defrost, return to our troubleshooting guide and look under "Freezer does not defrost automatically".