LG Error Code F1 — Error Code F1

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

What Does LG Error Code F1 Mean?

LG washer: Error Code F1

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 F1. Work through them in the order shown — they are listed from most common to least common.

1. Faulty door interlock
2. Malfunctioning control board
3. Issues with the pressure switch
4. Drain pump failure
5. Wiring issue in the control circuit

Step-by-Step Troubleshooting (6 steps)

Follow this sequence to diagnose and clear LG error code F1. Power down and unplug the machine before any internal inspection.

1. Disconnect power before servicing.
2. Inspect the door interlock for proper operation and replace if faulty.
3. Check the control board for any visible damage or burnt components.
4. Test the pressure switch for continuity and replace if defective.
5. Examine the drain pump for blockages or failure.
6. Inspect wiring connections for any signs of damage or loose connections.

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.

• Door interlock switch
• Control board
• Pressure switch

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 F1, 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.

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