This is usually the most alarming issue.

Possible causes include:

Thermostat Malfunction: The thermostat regulates the temperature, and if it’s not working, the freezer won’t know when to cool down.
Dirty Condenser Coils: These coils release heat on the back or bottom of the freezer. If they’re covered in dust, they can’t work efficiently.
Refrigerant Leak: Refrigerant is the liquid that cools the freezer. A leak can cause a significant drop in temperature.

This can make it hard to access food and reduce the freezer’s efficiency.

Possible causes include:

Faulty Door Seal: A broken or loose seal lets warm, moist air in, which then freezes.
Overstuffed Freezer: Too much food can block airflow and cause frost to form.
Defrost System Failure: The defrost system melts frost regularly, and if it breaks, it builds up.

While some noise is normal, loud banging or grinding isn’t.

Possible causes include:

Defective Evaporator Fan: This fan circulates air; if it’s broken, it can make a racket.
Compressor Issues: The compressor is the heart of the freezer, and if it’s failing, it can make loud noises.

This can damage floors and create a safety hazard.

Possible causes include:

Clogged or Frozen Defrost Drain: The defrost drain removes water from the melted frost. If it’s blocked, water can overflow.
Damaged Ice Maker: A leaky ice maker can cause water to pool under the freezer.
Condensation Buildup: Warm, humid air entering the freezer can cause condensation to form and drip onto the floor.