Samsung Refrigerators Error Code E8 – How to Fix Freezer Defrost Probe?

When your Samsung refrigerator suddenly flashes Error Code E8, it’s signaling a problem with the freezer defrost probe. This component monitors the temperature inside the freezer and communicates with the control board to trigger defrost cycles. If the probe is faulty or misreading temperatures, your freezer may stop defrosting properly, leading to frost build-up, poor cooling, and eventually food spoilage.

Below, you’ll find a complete guide to diagnosing and fixing this problem. Even if you’re not a seasoned appliance repair technician, many steps are manageable with basic tools and patience. And if you hit a wall, you can always reach out to our local repair team for professional, same-day help.

Understanding Error Code E8 in Samsung RS21, RS55, RS59 Models

These refrigerator series use a sensor-based system to ensure efficient cooling. The freezer defrost probe (also called the defrost sensor) tells the control board when frost has built up on the evaporator coils. If the sensor fails, the control board can’t time defrost cycles correctly.

Common signs alongside E8 include:

• Excessive frost on the back freezer panel
• Freezer temperature warmer than usual
• Loud fan noise (ice blocking the fan blades)
• Water pooling under drawers after partial defrost

Step-by-Step: How to Fix Samsung Refrigerator Error Code E8

Before starting, unplug your refrigerator or switch off the circuit breaker. This ensures safety while working inside the appliance.

1. Gather Your Tools

You’ll need:

• Phillips screwdriver
• Flathead screwdriver (or plastic pry tool)
• Multimeter (to test the sensor)
• Replacement defrost probe (specific to your model)

2. Access the Freezer Defrost Probe

1. Remove the food and shelves from the freezer compartment.
2. Unscrew and carefully remove the back panel inside the freezer.
3. Locate the evaporator coils — the probe is usually clipped to them or nearby in a plastic housing.

3. Test the Probe

1. Disconnect the probe’s wiring harness.
2. Set your multimeter to measure resistance (ohms).
3. A healthy probe typically measures between 5–50 kΩ, depending on temperature.
4. If your reading is far outside this range or fluctuates wildly, the sensor is faulty.

4. Replace the Defrost Probe

1. Order the correct replacement for your specific model (RS21, RS55, or RS59).
2. Clip or mount the new sensor in the exact position as the old one.
3. Reconnect the wiring harness securely.

5. Reassemble and Test

1. Reinstall the back freezer panel and secure it with screws.
2. Restore power to the refrigerator.
3. Monitor for 24 hours — the error code should clear automatically if the repair is successful.

If the Error Code Returns

Sometimes, a faulty control board or wiring harness can cause the E8 code even with a brand-new sensor. In these cases, professional diagnostics are recommended. Our express appliance repair service can pinpoint the issue quickly, often with a free service call with repair. You can even book online and get $25 off on all repairs!

Why Call a Professional?

While replacing a defrost probe is relatively straightforward, accessing components in Samsung refrigerators can be tricky. Mishandling panels or wiring may lead to bigger problems. Plus, if you need emergency fridge repair because your fridge is warming up fast, our local team offers same-day appointments near me to save your food and time.

Final Thoughts

The E8 error on Samsung RS21, RS55, and RS59 refrigerators usually points to a failed freezer defrost probe. With the right tools, you can attempt the repair yourself, but if frost keeps building up or the code returns, our skilled technicians are ready to help. We offer fast service, expert diagnostics, and reliable Samsung appliance repairs backed by a warranty.

Don’t wait until your fridge stops cooling entirely — contact our team today to get your appliance running like new again.

(647) 492-7773

Available 7 am – 10 pm including weekends and holidays