How to Reset a Freezer Compressor in 5 Simple Steps

If your freezer has stopped cooling, the first thing to check is the compressor. Most of the time you can reset it yourself without calling a technician. This guide walks you through the process, explains what to listen for, and tells you when it’s time to get professional help.

Why a Compressor Reset Works

The compressor is the heart of the cooling system. It runs on a cycle of start‑up, run, and shut‑off. Over‑heating, power spikes, or a temporary blockage can cause the built‑in overload protector to trip. When that happens the compressor stops, and the freezer warms up. Resetting clears the trip and lets the motor try again.

Step‑by‑Step Reset Procedure

1. Unplug the freezer. Pull the plug straight out of the wall. Wait at least 5 minutes. This cool‑down period lets the overload protector reset and any residual charge disappear.

2. Locate the reset button. Most modern freezers have a small red or black button on the back near the compressor. It may be labeled “Reset” or just a tiny push‑in nub. If you can’t find one, skip to the next step – many units reset automatically after the power cycle.

3. Press and hold the reset button. Use a pen or a small screwdriver to press the button for about 3‑5 seconds. You should hear a click, which means the circuit has been cleared.

4. Plug the freezer back in. Turn the thermostat dial to the coldest setting and close the door. Give the unit 10‑15 minutes to start pulling down the temperature.

5. Listen and feel. After a few minutes you should hear a low humming noise from the compressor and feel cool air blowing from the back. If the freezer begins to freeze again, the reset worked.

If the compressor does not start, repeat the power‑off and reset steps once more. Sometimes the overload needs two cycles to clear.

When to Call a Pro

• After two reset attempts the compressor is still silent.
• You notice a burning smell or see sparks.
• The freezer makes a loud clunking or grinding noise.
• The temperature stays above 0°F (‑18°C) for more than 4 hours.

These signs point to a serious mechanical problem that requires a qualified technician. Trying to force a faulty compressor back on can damage the sealed system and cost more in the long run.

While you’re waiting for a repair, you can keep food safe by moving it to another freezer or using ice packs. Also, check the door seals – a loose seal can make the compressor work harder and trip the overload more often.

Resetting a freezer compressor is a quick fix for many cooling hiccups. By following the steps above you can avoid a service call, save money, and get your food back to safe temperatures in no time.