LG Washer Error Code FF — Frozen Water Supply
What this means
The FF error code on LG washers indicates that the drainage hose, water supply hose, or internal components have frozen due to cold weather. This typically occurs in garages, basements, or laundry rooms exposed to below-freezing temperatures. The washer cannot fill or drain properly when ice blocks the water passages. This code is most common on top-load LG models during winter months.
Step-by-step fix
4 stepsCheck the water supply hose
Turn off the water tap and inspect the water supply hose connected to the back of the washer. Feel the hose for hard, rigid sections that indicate ice inside. If frozen, wrap the hose with a warm, wet towel and wait 30–60 minutes for it to thaw.
Never use boiling water directly on plastic hoses — it can warp them. Use warm water (50–60°C) instead.
Check the drain hose and pump
Inspect the drain hose at the back of the machine for ice blockages. Also check the drain pump filter (usually at the front bottom of the machine) for frozen water. Remove any ice carefully.
Place towels and a shallow pan under the drain filter access panel before opening it — water will flow out as it thaws.
Thaw the interior tub
Pour approximately 1 liter of warm water (50–60°C) into the wash tub. Close the door and wait 1–2 hours for the interior components to thaw completely.
Do not attempt to run a spin cycle while components are still frozen — this can damage the drain pump.
Test the washer
After thawing, turn on the power and select Rinse + Spin to test whether the washer fills and drains normally. If the FF error clears and water flows properly, the fix is complete.
To prevent future FF errors, insulate exposed hoses and keep the laundry area above 5°C (41°F) during winter.
When to call a professional
If the error persists after all hoses and components have fully thawed, the water inlet valve or drain pump may have been damaged by ice expansion and will need professional inspection.
Related error codes
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
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