LG Washer FE Error Explained
The LG washer FE error (often displayed as F E or Flood Error) is a safety code that warns of an overfill, leak, or water level problem inside the washer. This code appears when the washer detects unexpected water accumulation in the tub or base pan or when the water level sensor/pressure system reports a fault. If ignored, FE can lead to overflowing, water damage to floors and nearby structures, electrical shorts, longer cycle interruptions, and repeated drain attempts that waste water and energy. Users commonly notice sudden stops mid-cycle, standing water in the drum, or the machine refusing to spin or drain when FE is active.
Common Causes
- Blocked or kinked drain hose preventing proper drainage
- Faulty drain pump or clogged pump filter
- Defective or clogged water level sensor / pressure switch
- Leaking inlet hoses, internal hoses, or tub seal causing water to collect in the base
- Stuck or malfunctioning water inlet valve allowing continuous water flow
- Tripped float switch or emergency overflow switch detecting water in the base pan
- Control board or PCB error misreading sensor inputs
- Incorrect installation or improper drain height causing backflow
- External plumbing issues such as slow household drain or sewer backup
Troubleshooting Steps
- Power reset: Unplug the washer or turn off the breaker for 5 minutes, then restart to see if the code clears.
- Turn off water supply: Close both hot and cold inlet valves to prevent further flooding while you inspect.
- Check visible hoses: Inspect inlet and drain hoses for kinks, clogs, or obvious leaks. Straighten kinks and replace damaged hoses.
- Inspect the drain pump and filter: For front-load models, remove the pump access cover and clean the filter/trap of lint, coins, or debris that could block drainage.
- Verify drain hose placement: Ensure the drain hose is at the correct height (manufacturer recommended) and not inserted too far into a standpipe which can cause siphoning/backflow.
- Look for water in the base pan: Tip the washer slightly (with two people) or remove the cabinet to inspect the base for pooling. If water is present, dry it and locate the leak source.
- Check the pressure hose and sensor: Inspect the small rubber tube between the tub and pressure sensor for clogs, kinks, or disconnection. Replace the pressure switch if faulty.
- Test the water inlet valve: If water continues filling with the machine off, the inlet valve may be stuck open and should be replaced.
- Run a diagnostic mode: Use the washer’s service diagnostic to read error history and run self-tests (refer to your model’s service manual for entry steps).
- Inspect electronic controls: If sensors and valves test OK, the main control board may be misinterpreting signals—consult a technician to test or replace the PCB.
- Perform a controlled test cycle: After repairs or cleaning, run a short drain/spin cycle to confirm the FE code does not return.
- Call a professional: If you cannot find leaks, the code persists after simple fixes, or you are uncomfortable working near water and electricity, contact an authorized LG service technician.
Maintenance / Prevention Tips
- Regularly inspect inlet and drain hoses for wear, cracks, and kinks; replace every 5 years or sooner if damaged.
- Clean the pump filter and drain trap every 3 months to prevent clogs.
- Keep the washer level so water does not pool in unintended areas.
- Ensure proper drain hose installation and correct standpipe height per the manual.
- Install a water hammer/arrestor if your plumbing produces strong pressure spikes.
- Use quality, OEM or rated replacement hoses and clamps to avoid leaks.
- Do not overload the washer; excess detergent suds and weight can interfere with proper draining.
- Periodically check the small pressure tubing for blockages or deterioration.
- Run a maintenance cycle with washer cleaner monthly to remove residue.
- Keep the area under and around the washer dry and free of debris to spot leaks quickly.
- Consider a leak detection device or automatic shutoff valve for added flood protection.
- Follow the owner manual for proper detergent type and amounts to reduce oversudsing.
- Schedule annual professional inspections if heavy or commercial use is common.
- Replace inlet hoses proactively instead of waiting for failure.
FAQs
What exactly does FE mean on my LG washer?
FE stands for Flood Error and indicates the machine detects too much water in the base, an overfill, or an issue with water-level sensing. It is a protective code to prevent water damage.
Can I keep using the washer if FE shows up once?
No. Avoid running additional cycles until you locate the cause. Continued use risks overflow and electrical damage. Perform basic checks (power off, inspect hoses) before attempting another cycle.
Will FE clear itself after I reset the washer?
Sometimes a power reset clears a false alarm, but if the underlying issue (leak, clog, or failed valve/sensor) remains, FE will reappear. Use reset as a first step only.
Is FE dangerous?
Yes, because it signals potential water escape which can cause electrical hazards, floor damage, and mold. Treat FE as a high-priority issue.
When should I call a technician?
Call a qualified technician if you find internal leaks, if electrical components (control board, sensors) need testing or replacement, or if the code returns after you have completed basic troubleshooting.
Conclusion / Safety Notice
The LG FE error is a critical alert signaling water control or leak issues that should not be ignored. Always turn off power and water before inspecting the washer, and avoid DIY repairs beyond simple hose and filter checks if you are not comfortable working around live electrical components. If the cause is not obvious, if there is standing water inside the base, or if electrical components may be involved, hire a certified appliance technician to diagnose and repair the unit to prevent damage and ensure safety.
When in doubt, stop using the washer and contact an authorized LG repair service — quick professional attention can avoid costly water damage and restore safe operation.
Severity Level
Affected Appliance Models
| Model Number |
|---|
| WM3900HWA |
| WM3500CW |
| WM3700HWA |
| WT7300CW |
| WT7800CW |
| WM9000HVA |
| WM3470HVA |
