The LF error on your Whirlpool Washer means “Long Fill” — the washer is taking too long to fill with water. Check your water supply valves are fully open and inlet hoses aren’t kinked.

Error code LF
Meaning Long Fill – washer is not filling with water quickly enough
Severity Medium — washer will not complete cycles until resolved
Time to fix 10–45 minutes
Tools needed Pliers, bucket, towel, multimeter (optional)

What the LF error means

The LF error code stands for “Long Fill” and indicates your Whirlpool washer is not receiving adequate water flow during the fill cycle. The washer’s control board monitors how long it takes to reach the proper water level, and if this exceeds the programmed time limit (typically 10-13 minutes), it triggers the LF error. This is a safety feature that prevents the washer from running indefinitely while waiting for water, which could indicate a water supply problem or component failure.

Common causes

  • Water supply valves not fully opened or turned off
  • Kinked, crushed, or blocked inlet hoses restricting water flow
  • Clogged inlet screens or filters at the hose connections
  • Low household water pressure (below 20 psi)
  • Faulty water inlet valve failing to open properly
  • Defective water level pressure switch or pressure hose

How to fix the LF error

  1. Check water supply valves: Locate the hot and cold water supply valves behind the washer (usually on the wall). Turn both valves fully counterclockwise to ensure they’re completely open. Partially closed valves are a common cause of slow fill issues.
  2. Inspect inlet hoses: Pull the washer away from the wall and examine both inlet hoses for kinks, twists, or crushing. Straighten any bent sections and ensure nothing is pinching the hoses. Also verify the hoses aren’t frozen if the washer is in a cold location.
  3. Clean inlet screens: Turn off the water supply valves and disconnect the inlet hoses from the back of the washer. Use pliers to carefully remove the small mesh screens inside each inlet port on the washer. Rinse these screens under running water to remove sediment and debris, then reinstall them and reconnect the hoses.
  4. Test water pressure: Turn on each supply valve one at a time with hoses disconnected (have a bucket ready) to check water flow. Strong flow indicates good pressure; weak flow suggests low household water pressure or a clogged supply line. Contact a plumber if pressure is consistently low throughout your home.
  5. Inspect the water inlet valve: If water pressure and hoses are fine, the inlet valve may be faulty. Unplug the washer, remove the top panel, and locate the inlet valve where hoses connect. Check for mineral buildup or debris blocking the valve openings. Use a multimeter to test for continuity across each solenoid coil (typically 500-1500 ohms). Replace the valve if readings are outside this range or if it shows visible damage.
  6. Check the pressure switch system: Examine the pressure hose (small tube running from the tub to the pressure switch) for clogs, cracks, or disconnection. Blow through it gently to ensure it’s clear. If the pressure switch itself is faulty, it may not signal that water has filled properly. This requires testing with a multimeter or professional diagnosis.

FAQ

Can I still use my Whirlpool washer with the LF error code?
No, you should not use the washer when the LF error appears. The washer will not fill properly and cannot complete wash cycles effectively. Continuing to run cycles may cause the washer to time out repeatedly and could potentially damage the control board or other components.

How much does it cost to fix the LF error on a Whirlpool washer?
If the issue is simply closed valves or kinked hoses, the fix is free. Cleaning inlet screens costs nothing but your time. A replacement water inlet valve costs $40-$80 for the part, plus $150-$250 for professional installation. A new pressure switch runs $30-$70 plus labor. Most LF errors can be resolved with simple checks that cost nothing.

Why does my Whirlpool washer show LF only on certain cycles?
Some wash cycles require more water or faster fill times than others. If your water pressure is borderline adequate, longer cycles or those requiring hot water (which may have lower pressure) might trigger the LF error while shorter cold-water cycles work fine. This typically indicates marginal water pressure or a partially clogged inlet screen that needs cleaning.