LG Error Code HC — Heater circuit (gas)

Service Guy AI • Dryer • Medium severity • Intermediate skill • ~30 min repair

What Does LG Error Code HC Mean?

LG dryer: Heater circuit (gas)

This is a medium-severity fault. The machine may complete the current cycle but is signalling a problem you should resolve before it escalates.

Possible Causes (5)

LG engineers identify the following root causes for fault code HC. Work through them in the order shown — they are listed from most common to least common.

1. Faulty gas valve solenoid
2. Clogged venting system
3. Defective igniter
4. Malfunctioning control board
5. Disconnected or damaged wiring

Step-by-Step Troubleshooting (6 steps)

Follow this sequence to diagnose and clear LG error code HC. Power down and unplug the machine before any internal inspection.

1. Disconnect power before servicing.
2. Inspect the gas valve solenoid for continuity and proper operation.
3. Check the venting system for blockages and clean if necessary.
4. Examine the igniter for damage or wear.
5. Test the control board for any error signals or faults.
6. Inspect all wiring connections for damage or disconnection.

Required Parts

Have these LG OEM part numbers ready before starting the repair. AAdvantage Laundry Systems carries verified parts for every code in this database.

• Gas valve solenoid
• Igniter assembly
• Vent duct
• Thermal fuse

Diagnostic Test Mode

Enter LG diagnostic test mode: Hold 'Rinse+Spin + Power' for 3 seconds

Skill Level & Repair Time

This repair is appropriate for an experienced laundromat owner or in-house technician. You should be comfortable removing service panels, reading wiring diagrams, and using a multimeter to test continuity and voltage. Plan for approximately 30 minutes of active repair time once parts are on hand.

Get AI-Powered Diagnosis

If the steps above don't resolve LG HC, run a free Service Guy AI diagnosis. Upload a photo of the error display and get an AI-generated repair plan tied to your exact LG model number, including supplier links for required parts and on-call technician escalation.

Other LG Error Codes