Updated at: 25-08-2022 - By: Helen Skeates

F21 on a Whirlpool washer means what? To put it another way, it means that the Whirlpool washer is unable to adequately drain water. The drain line and drain pump can become clogged with debris and grime, resulting in stagnant water.

After a while, the washing machine’s ability to remove water is lost.. Draining the tub will take much longer if this mistake occurs.

A kinked or clogged drain hose is another typical issue, as is not using high-efficiency (HE) detergent. However, if the problem continues to appear, you should seek the assistance of a specialist. Let them take a closer look at the other conditions that have been outlined in this section. Knowing where to get washer lid switches could be useful.

Reset Its Error Code

When you encounter the F21 error, try pressing Pause or Cancel to halt the current wash cycle. Next, if water is still in the tub, hit the drain/spin button. As a result, the drain’s secondary operation must now remove the tub’s water. Washing begins anew after you watch the water flow away. To begin the repair process, simply click the “Start” button.

Whirlpool Duet Washer F21 Error Troubleshooting and Repair

Clean The Washer Drain Hose

If the F21 error persists, the problem may be with the drain pipe. Place a towel on the floor to keep it dry in the event of a water leak. Disconnect the drain hose at the back. Drain hose access should be sanitized. Remove the hose and shake it with your hand to dislodge and remove any clogs that may have formed.

Straighten the drain hose before reconnecting. Drain difficulties are caused by any twist or bend in the hose. Consider learning how to clean the drain hoses of your washing machine.

Check Drain Facility or Standpipe

Drain hoses should be inserted into the standpipes or drain facilities correctly. Drainage will take place as expected. The F21 error code is a result of drain or standpipe issues. Troubleshooting instructions are provided below.

#1. Drain hose connected to the standpipe

The distance from the drain pipe to the whirlpool washer should be measured. If the distance is greater than 96 inches, remove the drain hose and store it at the base of the standpipe. And make sure it’s secure.

#2. Drain hose inserted into the standpipe

If you’ve pushed the drain hose too far into the standpipe, simply pull it upwards. Prevent clogging by leaving a space between the drain and the drain hose. When it happens, the error will be fixed.

Use The Right Detergent

Whirlpool’s washing machine is a power saver. A high-efficiency detergent is also required. If you don’t use a HE detergent, you’ll end up with a lot of foam in your washer. The drain tube is now clogged with foam, resulting in the F21 error code.

Resolve the problem by switching to a new spin or drying cycle that eliminates any remaining soap or foam. However, when washing, be sure to follow the directions carefully and only use the recommended amount of detergent.

Check The Faulty Motor

Motor failure is to blame for the F21. While the drain cycle is starting, make sure the drain pump has enough power. Ensure that the drain pump receives 120 volts when it is running

It’s possible that the supply control board isn’t sending enough power to the drain pump to get it up and running properly.

Allow the drain pump to get the proper power. After then, troubleshoot the pump to find the problem. Next, disassemble the pump to check for any obstructions. For mechanical or electrical issues, a multimeter can be an invaluable tool. Drain pump replacement is finally completed.

Error Codes On Whirlpool Washer

The following is a list of possible Whirlpool washer fault codes.

  • Whether you call them Sd or Sud, the washer is overflowing with suds.
  • Error code F7 E1: incorrect motor speed measurement
  • The F8 E1 sensor is used to detect insufficient water flow.
  • Not latching properly on the F5 E2 door.

Proper Reset of Whirlpool Washer

For around two minutes, turn off the top-loading Whirlpool washer. Wait 30 seconds after plugging it back in before using it again. This will perform a hard reset on the washing machine, and it will begin again once it is reconnected. It’s possible you’d like to read about the Whirlpool Smart Cabrio WTW8700EC washer.

Where You Can Find The Reset Button

An error code can be reset by pressing the reset button on a new washer’s control panel. The motor can also be reset by pressing a button on the panel. Unplug and re-plug the washer in a washing machine that does not have a reset button.

Effective Way To Clear The Whirlpool Washer Error Code

Remove the cord and press the cancel or pause button. Double-click the power button, and then double-click the volume buttons. Unplug the Whirlpool washer if the error code is still displayed. For a full minute, turn off the power. During a clean wash cycle, items are able to evade detection. Restart the clean washer cycle after removing the contents of the drum. Check out this guide on removing the control panel from a Whirlpool Duet Sport.

Whirlpool Washer Error Code F21? Try These Fixes - Homebli

How To Fix Whirlpool Washer Error Code F21?

Whirlpool washing machines that display error number F21 have an issue with the water drain. Your clothes will get wet if the washer is unable to complete the cycle.

There is a problem with the water pump, and draining is taking a lengthy time. Whirlpool washer F21 error code can be caused by any of the following:

  • Filters
  • Pump
  • Hoses
  • Nozzle
  • Sewage
  • Motor

Other factors may contribute to a mistake of this nature. It’s possible that the pressure switch has a problem. It’s possible that the pump wire or a contact has been damaged. There is a chance that the pump and the control board have broken down.

How To Diagnose The Issue?

To rule out a software problem, you should first try to reset the error:

  1. Obtain a wall outlet and plug in the washer.
  2. Pause/Cancel twice by pressing the Pause/Cancel button.
  3. After a few seconds, release the button and wait for the screen to become blank.
  4. Switch the washer off and unplug it if the F21 error continues to appear on the monitor.
  5. Replug it in and turn it on now.
  6. Make sure the problem has been solved.

If that didn’t fix the problem, it suggests that the mistake wasn’t caused by a software defect.

If your washer is still under warranty, you can either call a washing machine repairman or do some DIY.

8 Causes And Solutions Of Whirlpool Washer F21 Error Code

To help you fix the F21 error on your own, below are some possible causes and how to fix them.

It’s possible to implement some of these solutions in a reasonably short period of time (and free or inexpensive to fix). It’s unfortunate that some people are not!

#1 Clogged Drain Hose

The drain system is implicated in the F21 error code, although there are a number of other factors at play.

It’s possible for buttons, coins, and other items that come off clothing or are left in pockets to clog the drain pipe. It’s also possible that it’s wavy.

  • Remove the washing machine’s power plug from the outlet to turn it off.
  • In order to reach the washer’s back, it is necessary to move it away from the wall.
  • Check the washer hose for kinks, bends, and clogs by disconnecting it.
  • Water or air might be used in order to check for any obstructions.
  • If water won’t flow, use a long-handled hook to push the blockage through.
  • Ensure that the cable is not kinked or bent before reconnecting it to the machine.

When relocating the equipment, take care not to pull on the sewer connection by accident. Doing so will cost between $19 and $35 to replace the entire drain hose.

#2 Dirty Filter

By removing the front bottom panel, you can access the pump, mesh hair catcher, and wiring.

First, remove the screws holding it in place.

Brush the crud out of the filter. Use running water to rinse and replace.

#3 Clogged Pump

A F21 Whirlpool washer error message may be displayed if the pump itself is clogged or the corrugated tube that connects the pump is blocked.

The pump is located at the bottom of the washer, behind the front bar:

  1. Unplug the machine from the wall to disconnect it from the network.
  2. Removing the bottom panel is as simple as unscrewing the screws and lifting it out of place.
  3. It’s a good idea to lay down towels or a container at this point to catch any leaks.
  4. Remove the drain filter from the washer.
  5. Remove any foreign objects that may be causing the obstruction.
  6. Make sure the washing machine filter and other parts are clean.
  7. Restore order to the situation.
  8. Reconnect the machine to see if it now works.

You’ll need to replace the pump if the old one has failed. You may expect to pay anywhere from $30 to $160 for a model and store.

#4 Damaged Cable Loop

It is not acceptable for a cable loop to have any loose contacts or breakage. To ensure that the plug is firmly seated in the groove, you can either twist or solder the ends if you notice an issue.

The machine won’t be able to pump water if there’s a problem like this. The F21 error code is generated as a result of this.

The most common errors of Whirlpool washing machines - Coolblue - anything for a smile

Use a multimeter (multitester) to check each wire individually if there is no evident damage.

#5 Broken Pump Motor

It is possible that the pump motor has failed if you are certain that the wires are not damaged and the drain hose and filter are not clogged.

A multimeter can be used to check. To work effectively, the pump requires a voltage of precisely 120 volts, not more or less.

Lower readings mean you’ll need to replace the pump, which can be found underneath and hidden behind the machine’s front panel.

#6 Defective Pressure Switch

The drain pump is connected to the main control board through a pressure switch. It is possible to get an F21 error code if there is an issue with this connection.

In the event that the pressure switch needs to be replaced or repaired, use a multimeter to do so. Getting to this pressure switch isn’t a big deal:

  • Disconnect the machine from the wall outlet and turn it off.
  • Remove the top cover.
  • Remove the bar by undoing the three screws holding the back panel in place.

It is located on the right side of the washer, to the right of the detergent dispenser. A rubber tube connects the little disk to the hose.

The cost of a new one is going to be roughly $70.

#7 Defective Control Board

The control board of a Whirlpool washer might potentially malfunction, resulting in an F21 error code.

This can happen if the drain cycle is not started because there is no signal. Drainage times are taking longer than usual, which is why the F21 fault code is blinking.

The control board can be severely damaged by de-soldered wires and short circuits.

Replacement of the burned board will cost between $200 and $450, depending on the severity of the damage.

A simple soldering job could solve the problem.

#8 Sewer Blockage

If the machine is pumping water out, but the drain tube is leaking, you may have a sewer clog.

Coins, socks, and scraps of paper can clog these pipes.

Remove the nozzle from the pipe, and then clean the pipe of any debris.

Replace the adaptor if the clearance is too narrow due to dirt or dust from the outflowing water.

What is an F21 or F02 Error Code on my Whirlpool Front Load Washer?

These error codes indicate that drain times are longer than expected. Here are some common issues:

The drain tube has become twisted.

Clog in the drainpipe

To avoid using HE High-Efficiency detergent

Is the drain hose kinked or clogged?

Keep an eye out for any obstructions in the drain line. Straighten the hose to ensure that water flows freely. Drain hoses, drainpipes, and utility sinks should be cleared of any obstructions. Secure the drain hose with the U-shaped drain hose form. For more information, refer to the provided documentation, such as the installation instructions.

Are you using HE High Efficiency detergent?

Only use HE (High Efficiency) detergents while washing your clothes. Excessive suds can be caused by using a detergent that isn’t HE or by using more detergent than the manufacturer recommends. The washer’s water removal will be slowed or halted by the buildup of suds.

Depending on the size of the load, just a modest amount of concentrated detergents labeled 2x and higher will be needed. Always adhere to the manufacturer’s instructions when using a product.

Here’s a video showing you how to install a drain pipe correctly.


How do I fix error F21 on my Whirlpool washer?

It’s a good idea to start by doing a washer reset. When your washer displays the F21 error code when it shouldn’t, all you need to do is reset it. In order to reset your washing machine, simply press “Pause/Cancel” on the control panel.

Whirlpool Washing Machine Error Codes - Troubleshooting and Manual

Why is my washing machine flashing F21?

A “water draining difficulty” signifies that the drain pump or drain hose in the washer is clogged, and the washer is experiencing issues draining away the water. The Whirlpool error code F21 indicates this. The washer is taking far too long to empty the tub, in other words.

What causes washer not to drain?

A clogged drain line or a malfunctioning pump could be to blame for your washing machine’s malfunction. Also, a faulty lid switch or belt can be at blame. It could be as simple as a hose being clogged up. Before any repairs or diagnostics can be performed, the washing machine’s water must be drained.

What does F28 mean on Whirlpool washer?

The error code displayed on the digital display of the Whirlpool Duet washer can warn you to a problem with the appliance. An F28 error number indicates a communication issue with the central control unit, which is a common occurrence. In most cases, this issue can be resolved by simply restarting the control unit.

Does a Whirlpool Duet washer have a filter?

A front-loading, energy-efficient washing machine from Whirlpool is the Duet Washer from the brand. Under the front kick plate, you’ll find the filter for your Whirlpool Duet washer. Filters in washing machines catch lint that falls from the clothing while they are washed. It is recommended that the lint filter be cleaned at least every six months.

What does flashing F and H on a Whirlpool Duet washer?

If the flow meter does not detect any flow for 30 seconds while the machine is trying to fill with water, this error code will be shown. The water supply should be checked to ensure enough pressure for both hot and cold water in this instance.

Is there a reset button on a Whirlpool Duet washer?

Turn the dial until the RINSE, WASH, and STOP lights are all lit up. After that, switch off and unplug your washer for ten seconds. It should be reset when you turn it on again.

It’s A Wrap!

You now know what the F21 error code on a Whirlpool washer means. Resetting the error code, cleaning the drain hose, testing the drain facility, using the appropriate detergent, and verifying the malfunctioning motor are just a few of the things you’ll need to complete.