Whirlpool Washer LF Error Code: Long Fill

Quick Answer

The LF code means your washer is taking too long to fill with water. To fix it, ensure your home water valves are fully open, check for kinked supply hoses, and clean the small sediment screens inside the water inlet valve connections.

If you keep hitting cancel and restarting, stop. This code isn't going away on its own, and running the washer with low water puts extra stress on the pump because it's moving less than it's designed for. I've seen this exact code on probably a dozen Whirlpools in the last few weeks alone. Nine out of ten times it's a clogged inlet screen or a half-closed valve, and you can fix it yourself in ten minutes.

WhirlpoolWasherSeverity: moderate86% DIY Success

Time to Fix

15–60 min

Difficulty

beginner

Parts Cost

$25 – $55

Tools Needed

Phillips #2 screwdriver, Flat-head screwdriver

What Does the LF Code Mean?

Think of LF as a stopwatch that ran out of time. Your Whirlpool washer's timing how fast it fills, and if it doesn't hit the target level within 13 minutes, the software assumes something's wrong and shuts everything down. Before you spend money on parts, let's check if your home's actually delivering water to the machine. Usually it is.

Most Likely Causes

Based on aggregated repair data, here is the probability breakdown for this error code:

Clogged inlet screens or restricted supply45%

Faulty water inlet valve assembly30%

Kinked or pinched fill hoses15%

Pressure sensor or hose malfunction10%

Symptoms You May Notice

Washer runs for a few minutes then stops cold and throws LF on the display instead of finishing the cycle.
Flow into the tub sounds like a slow trickle instead of the normal strong rush you'd expect at the start of a fill.
Machine starts normally, agitates for a second, then pauses because the water level was never right to begin with.
Fill cycle just keeps going way longer than usual before eventually timing out and showing the error code.
Cold cycles fail with LF but hot cycles work fine, or vice versa. That points straight to one solenoid on the inlet valve.

Can you reset a Whirlpool washer to clear the LF code?

To clear the LF code, press the Power or Cancel button twice to stop the current cycle. If the code persists, unplug the washer for a full minute to reset the control board. Keep in mind that the error will return immediately if you start a new cycle without fixing the underlying water supply or screen blockage issue.

Tools Required for Diagnosis

Phillips #2 screwdriverFlat-head screwdriverNeedle-nose pliersMultimeter (set to ohms)BucketOld toothbrushWork towels

Service / Diagnostic Mode

With the washer in standby (plugged in but off), turn the cycle selector knob: Left, Right, Right, Right, Left. All lights should flash.

Diagnostic Checklist

Follow these steps in order. We start with the easiest external fixes before opening up the machine.

ComponentComponent Under Test

Expected Range500–1500 ohms

ConditionIf Open (OL) or infinite, replace component.

Replacement Parts

If your diagnostic testing proves the component has failed, you will need a replacement. We recommend OEM parts over aftermarket for water-handling components.

Part Name	OEM Number	Estimated Price
Water Inlet ValveWPW10346771 · $30–$55	WPW10346771	$30 – $55
Pressure SwitchWPW10514214 · $25–$45	WPW10514214	$25 – $45

Frequently Asked Questions

How do I know if my Whirlpool washer inlet valve screens are clogged?

Honestly, you don't even need a flashlight to know they're bad. Pull the hose off and look inside the port. A healthy screen looks like a clean window screen. If you see a layer of orange or white crust over the mesh, that's your problem right there. I've pulled screens so packed with calcium they looked solid. Water physically can't get through fast enough to satisfy the control board's 13-minute timer when they're like that.

What water pressure does a Whirlpool washer need?

Most homes sit around 40 to 60 psi, which is plenty. Whirlpool's minimum is 20 psi. If you've got a well system or a failing pressure regulator, it might drop below that. Go check your kitchen faucet. If the flow feels weak there too, the LF code is a plumbing issue, not a washer problem. The inlet valve solenoid needs that pressure behind it to push the internal diaphragm open. Low pressure and it won't open fully, no matter how good the valve is.

My Whirlpool washer shows LF only on cold wash cycles. What does that mean?

Classic sign of a dead cold water solenoid or a clogged cold water screen. Since most people default to cold wash, that side of the valve takes way more abuse and fails more often. Clean the cold side screen first. If that doesn't fix it, grab your multimeter and check the cold solenoid terminals. You're looking for 500 to 1500 ohms. Open circuit or no reading means you need a new inlet valve assembly. Usually runs about $35 to $55 for an aftermarket replacement.

Can I just keep canceling and restarting when the LF code shows up?

You can, but it's gonna keep failing at the same point every single time. The washer's checking fill speed every cycle, and if the underlying issue is still there, LF's coming back. Worse, running cycles with low water puts extra stress on the pump because it's moving less than it's designed to handle. Just fix the root cause. If it's a clogged screen, that's literally a ten-minute job with a toothbrush and some vinegar.

How much does it cost to replace a Whirlpool water inlet valve?

The part runs about $35 to $60 for most Whirlpool top-loaders. OEM direct from Whirlpool is closer to $60 to $75. Aftermarket versions from PartSelect or Repair Clinic work fine in my experience, I've installed a bunch of them without issues. If you hire a tech, add $80 to $120 for labor depending on your area. Honestly it's one of the easiest DIY fixes on a washer. Pop the top panel, swap the hoses and wire connectors over to the new valve, and you're done in under fifteen minutes.

Related Whirlpool Washer Error Codes

Code: F20What Does F20 Mean on a Whirlpool Washer?Code: LO FLWhirlpool Washer LO FL Error Code: Low Flow Fault Code: F8 E1Whirlpool Washer F8 E1 Error Code: Low Water Level Code: F0 E7Whirlpool Washer F0 E7 Error Code: No Water Detected Code: RESETHow to Reset a Whirlpool Washer

Same Fix on Other Brands

Maytag washerLF: Maytag Washer LF Error Code

Same Fix Works on These Brands

Whirlpool shares the same hardware platform with these brands. The diagnosis and repair steps are identical.

Maytag washerAll Maytag Washer Error Codes: Complete Lookup Guide Maytag washerHow to Reset a Maytag Washer (3 Methods That Work)Maytag washerMaytag Washer Troubleshooting: Fix 12 Common Problems Maytag washerMaytag Washer F21: Drain Pump Clog or Failure Maytag washerMaytag F03 E01: Pressure Switch or Water Level Fault Maytag washerMaytag F0 E3 Error: Pressure Switch Malfunction

Models Known to Experience LF Errors

This repair applies to most Whirlpool washers with this error code. Common model numbers include:

WTW4816FW, WTW5000DW, WTW4850HW, WTW6120HW, WTW4950XW, WTW5100VQ, WTW7300XW, WTW8500DC

Written by

Mike Sullivan

Lead Appliance Repair Technician · 20 years experience

Last verified for technical accuracy on March 14, 2026