LG Washing Machine Error F3
⚡ Quick Answer: The LG washing machine error F3 signifies a problem with the water filling process, typically caused by issues with the water inlet valve or water lev... ✅ DIY Fixable
What Does Error F3 Mean?
The LG washing machine error F3 signifies a problem with the water filling process, typically caused by issues with the water inlet valve or water level detection. This error can result in the machine stopping mid-cycle and may prevent it from starting due to prolonged fill times or failure to detect the correct water level. Common causes include insufficient water supply, a faulty inlet valve, or a malfunctioning water level sensor.
Common Symptoms:
- Washing machine displays F3 and stops mid‑cycle
- Water fill takes unusually long or fails
- Washer does not start washing due to fill/level issue
Possible Causes
- Insufficient or restricted water supply (closed tap, kinked hose, low water pressure) (medium)
- Faulty or obstructed water inlet valve (medium)
- Water level sensor/pressure switch malfunction or blockage (medium)
How to Fix Error F3
DIY Fix Check water supply and connections
- Ensure the water supply valves (hot and cold) are fully open.
- Check that water inlet hoses are not kinked, bent, or blocked.
- Verify adequate household water pressure to the machine.
DIY Fix Clean inlet filters
- Turn off washing machine and disconnect power.
- Turn off water supply and disconnect inlet hoses from the washer.
- Remove and clean mesh filters at hose ends/inlet valve to remove debris.
- Reconnect hoses securely and restore water/power.
Technician Only Test/replace water inlet valve or pressure switch
- Disconnect power and water from the washer.
- Access and inspect the water inlet valve for electrical/mechanical failure.
- Test the water level sensor/pressure switch for correct operation and check tube for clogs.
- Replace faulty components as needed.
Parts needed: Water inlet valve, Water level/pressure switch
- If the error recurs after basic water supply and filter checks
- If water continues to flow uncontrollably after power off (potential inlet valve fault)
Next step
Choose the next step for F3
Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.
Most relevant component to inspect
Water Inlet Valve
Controls the flow of hot and cold water into the appliance.
- Typical part-only price
- $25 - $60
- DIY difficulty
- Easy
- Estimated time
- 15-30 mins
Where can I find the model number?
Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.
Verify the complete model and part number on the retailer's compatibility page before ordering.
Other parts options
Check related components first; use model search as a fallback.
Pressure Switch
Detects the water level inside the tub and signals when to start or stop filling.
Model-compatible Washing Machine parts
Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.
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Optional routine care
Maintenance supplies
These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.
Washing Machine Cleaner Tablets
Routine tub-cleaning supplies for residue and odor control. They do not repair a mechanical, drainage, or electronic fault.
Braided Washer Inlet Hoses
A maintenance replacement option for visibly worn external fill hoses. Verify thread size, length, and hot/cold connection requirements.
Washer Drain Hose Holder
Helps secure an external drain hose at the standpipe. It does not correct an internal pump or control fault.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.
Technical Specifications
| note | The previous model-independent part specification was removed. Verify the full model number and diagnosis in the manufacturer's official parts catalog before ordering. |
|---|---|
| part_number | None |
Common Questions
What does F3 error mean on LG washing machine?
The F3 error indicates a malfunction in the water filling process, causing the machine to stop mid-cycle.
Can I fix LG washing machine F3 error myself?
Yes, check the water supply and hose connections, and clean the inlet filters to potentially resolve the issue.
How much does it cost to fix F3 error?
The estimated cost to fix the F3 error ranges from ¥8,000 to ¥20,000, including parts and labor.
When should I call a technician for F3?
Call a technician if the error persists after checking the water supply or if water continues to flow uncontrollably after power off.
Data last verified: 2026-07-31
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