Samsung Refrigerator Error E8: What It Means & How to Fix a Thermistor Fault
Quick answer: An E8 code on a Samsung refrigerator means a thermistor is sending a bad temperature reading — usually a loose connection or a failed sensor, not always a serious cooling failure.
“Fridge temperature seemed to swing around a lot, E8 on the panel. Ruslan found a loose connector behind the back panel, not a bad part at all — reseated it and checked the readings stayed steady before he left.”
Quick Answer
An E8 code on a Samsung refrigerator means one of the thermistors — the sensors that monitor fridge and freezer temperature — is sending a reading the control board doesn’t trust. It’s most often a loose or corroded connection, occasionally a thermistor that’s genuinely failed.
What Does Error E8 Mean?
Samsung refrigerators use multiple thermistors placed throughout the fridge and freezer compartments to fine-tune cooling. If one loses its connection or its reading falls outside a valid range, the control board can’t rely on it to manage cooling accurately and raises E8. The fridge often keeps running in the meantime, but temperature control becomes less precise until it’s fixed.
4 Steps to Diagnose an E8 Error
Power cycle the fridge.
Unplug for a minute or two — this clears a genuine one-off glitch in some cases.
Check accessible thermistor wiring.
Some models have a thermistor near the back panel that’s reachable without a full teardown.
Monitor actual fridge and freezer temperature.
A thermometer left inside for a few hours tells you whether cooling is genuinely affected or just the display.
Have the thermistor tested and replaced if needed.
Most are located behind interior panels and need a technician to access safely.
Can You Fix This Yourself?
A power cycle is safe and worth trying first. Beyond that, most thermistors sit behind interior panels or the evaporator cover, so accessing and testing them properly is best left to a technician — especially since a misdiagnosis could mean replacing the wrong sensor while the fridge’s cooling performance is already compromised.
What Happens When You Call Star Appliance Repair
- Free service call with any completed repair — you’re never charged just to have us look
- Upfront price before any work begins, once the exact part is confirmed
- Most calls booked before noon get same-day service
- Manufacturer-approved parts, backed by our written warranty
Frequently Asked Questions
Is my food still safe with E8 showing?
Check with a thermometer to be sure — if the fridge is holding a safe temperature despite the code, food is fine, but don’t assume without checking.
Will this get worse if I ignore it?
It can — an unreliable thermistor may let the fridge run warmer than it should without you noticing until food quality suffers.
Is this an expensive repair?
Thermistors are inexpensive parts — most of the cost is labour to access them, which your technician confirms on-site.
Could ambient temperature near the fridge cause this?
Rarely, but extreme heat sources or direct sunlight nearby can occasionally affect sensor readings — worth ruling out if the fridge’s location recently changed.
*Same-day service is offered whenever possible and depends on technician availability, parts, and your location within the GTA.