LG Dishwasher ✅ Safe for Now

LG Dishwasher Error Code HE

LG Dishwasher error code HE: Heater failure.

Last reviewed: Aug 7, 2026 Last updated: Aug 7, 2026

Methodology: Reviewed against official Lg dishwasher support guidance, then grouped by fault family before separating owner-safe checks from technician-level diagnosis.

Sources: Manufacturer fault-code sheets, service manuals, and recurring field-repair patterns.

LG Support - Dishwasher troubleshooting — Official LG support library used for dishwasher error-code and troubleshooting references.

Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.

Should I unplug it?

✅ No — safe for now

Safe to use on cold settings temporarily. Heating element failure is a common DIY repair.

Can I fix it myself?

DIY Possible

Part: Heating element / thermal fuse / thermistor

How much will it cost?

DIY: $20–$100 (element or thermistor)

Technician: $100–$300

⏱ 30–60 min

What Does Error HE Mean on Your LG Dishwasher?

LG Dishwasher error code HE: Heater failure.

What typically fails: Heating element / thermal fuse / thermistor

What You're Probably Seeing

→ Dishes not clean or dry
→ Water not heating
→ Long cycles

Common Causes

• Door latch not fully engaging before cycle start
• Latch switch or strike misalignment
• Loose latch wiring or failed door-switch circuit

What to Try First

1 Unplug the dishwasher for 60 seconds then plug back in — this resets the control board and clears many temporary faults
2 Test the heating element with a multimeter — replace if no continuity ($20–$80 part)
3 Check the thermal fuse — a blown fuse means there was overheating, also check the vent
4 If the error persists after basic troubleshooting, contact a qualified appliance technician

🛠️ You'll need: Multimeter, Screwdriver set, Nut driver · Time: 30–60 min

💡 Try this first: Unplug the appliance for 60 seconds, then plug back in. This resets the control board and clears many temporary faults.

Questions People Also Ask

What does LG Dishwasher error code HE mean? ▼

Error code HE on a LG Dishwasher means: Heater failure. The appliance detected this condition and has stopped or limited operation to prevent further damage.

How do I fix LG Dishwasher error code HE? ▼

First, unplug the dishwasher for 60 seconds to reset the control board. If error HE returns, the root cause (heater failure) needs to be addressed — check connections, filters, and hoses before calling a technician.

Is it safe to use my LG Dishwasher with error code HE? ▼

It depends on the cause. Most HE errors mean the appliance has stopped itself as a safety measure. Check the 'Should I unplug it?' section above for specific guidance on this error.

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