LG Refrigerator HE Error Code: What It Means & What to Check
Q: My LG refrigerator is showing HE. What does it mean?
A: On many LG refrigerators, HE points to a heater/defrost-related error. In plain terms: during a defrost cycle, the refrigerator expected the defrost heater system to warm the evaporator area enough to melt frost, but the control didn’t see the temperature change it expected — or it detected a heater circuit problem.
Defrost is critical because frost buildup can choke airflow, causing warm fridge temps, weak freezer performance, and noisy fan issues. The steps below cover safe checks you can do first, and when to call our friendly technicians in yellow.
What you might notice with an HE code
- Fridge section getting warm while the freezer seems “kind of cold”
- Freezer back panel covered in frost or snow
- Reduced airflow from vents
- Fan noise or a fan hitting ice
- Long run times and temperature alarms
Safety first
- Keep doors closed as much as possible to protect food.
- If temps are rising, move high-risk foods (milk, meat, leftovers) to a cooler with ice.
- If you smell burning or see damaged wiring, unplug the refrigerator and schedule service.
Common causes of LG HE
HE typically indicates the refrigerator isn’t defrosting properly. Common causes include:
- Failed defrost heater (open circuit / not heating)
- Thermistor/temperature sensor issue (control can’t confirm temperature rise during defrost)
- Wiring or connector problem in the heater circuit (loose, corroded, damaged)
- Control board/relay issue not powering the heater correctly
- Excessive frost conditions from door seal leaks or frequent door openings (especially in humid Florida air)
Safe checks you can do at home
1) Do a full power reset
- Unplug the refrigerator (or turn it off at the breaker).
- Wait 5 minutes.
- Restore power and give it 10–15 minutes to stabilize.
If HE was caused by a one-time control glitch, it may clear. If it returns, continue below.
2) Check for heavy frost and airflow restriction
- Look for a snowy/frosty freezer back panel.
- Check whether airflow from vents feels weak.
- Make sure vents aren’t blocked by food packages or bins.
Why this matters: if the evaporator coils are iced over, cold air can’t circulate properly, and temps in the fresh-food section often rise first.
3) Check door seals and door closure
- Inspect gaskets for gaps, tears, or buildup.
- Wipe gaskets clean and confirm doors close fully.
- In humid Florida air, small seal leaks can accelerate frost buildup and make defrost work much harder.
4) Consider a controlled manual defrost (temporary relief)
If you have heavy frost/ice buildup, a safe manual defrost can temporarily restore airflow:
- Move food to a cooler.
- Unplug the unit and leave doors open for several hours.
- Use towels to catch water.
Do not chip ice with sharp tools or use high heat inside the cabinet. If HE returns after a manual defrost, the defrost system likely needs service-level diagnosis.
5) Keep an eye on temps after reset/defrost
If temperatures recover briefly and then drift again, that pattern strongly suggests the defrost heater system (heater, sensor, wiring, or control) isn’t operating correctly.
When to call our friendly technicians in yellow
Schedule service if:
- HE returns after a power reset
- You have recurring heavy frost or an iced-over freezer panel
- Fresh-food temps won’t stay cold
- You hear fan noise that sounds like it’s hitting ice
- Manual defrost helps only temporarily
Typical service-level diagnosis includes testing the defrost heater, verifying the thermistor/temperature sensor readings, checking wiring/connectors, and confirming the control board/relay is delivering power to the heater when it should.
Local Help in Citrus County, FL
If your LG refrigerator is showing HE, Beacon Services & Appliances can help. Our friendly technicians in yellow can diagnose the defrost heater circuit, confirm sensor readings, and get your refrigerator cooling and defrosting properly again.
Request service online or call (352) 726-7530.
Beacon Services & Appliances
(352) 726-7530 • www.BeaconSaves.com.
Content Update & Editorial Review
This article was reviewed for accuracy and clarity on February 15, 2026 by Chris.
LG Refrigerator HE FAQs
Will unplugging clear the HE code?
Sometimes a 5-minute power reset clears a temporary control glitch. If the defrost heater circuit has a real failure (heater, sensor, wiring, or relay), the HE code usually returns.
Is HE the same as “no cooling”?
Not exactly. HE is a defrost/heater error. But when a refrigerator can’t defrost, frost can block airflow and cause poor cooling — especially in the fresh-food section.
What’s the easiest clue that defrost is the problem?
A heavily frosted freezer back panel and weak airflow are common clues. Fan noise that sounds like it’s hitting ice is another sign.
Can a bad thermistor cause an HE code?
Yes. If the control board can’t trust the temperature sensor reading, it may think the heater isn’t working during defrost (even if it is), or it may fail to manage defrost correctly.
What parts are most likely with HE?
Common suspects include the defrost heater, thermistor/temperature sensor, wiring/connectors in the heater circuit, and the control board/relay that powers the heater.