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The F21 error code on a Maytag front loader washer typically indicates a problem with the machine's drainage system. The following are the most common reasons for the F21 error code and the steps that can be taken to resolve it:

The F21 error code on a Maytag front loader

1. Clogged or obstructed drain hose: Check the drain hose for any kinks, twists, or clogs. Straighten out the hose and remove any obstructions.
2. Blocked or restricted drain pump filter: Locate and remove the drain pump filter from the front bottom panel of the washer. Clean it thoroughly and reinstall it.
3. Failed drain pump: If the pump motor is not running or is not spinning the impeller, it may need to be replaced.
4. Excessive suds: If too much detergent is used, it can cause excessive suds and result in poor drainage. Use the recommended amount of detergent for the load size and wash cycle.
5. Drainage system issues: Check the home's drainage system to ensure there are no clogs or obstructions.

To clear the error code, press the Pause/Cancel button twice. If the problem persists, try the steps mentioned above or consult the washer's user manual for specific troubleshooting steps. If the problem cannot be resolved, it may be necessary to contact a qualified technician for assistance.

A drain or pump obstruction can contribute to the F21 error code on a Maytag front loader washer because it prevents the machine from draining water properly. This can lead to an accumulation of water in the washer drum, causing it to stop the cycle and display the error code.

To clear a drain or pump obstruction and restore proper drainage, you can follow these steps:

1. Unplug the washer and turn off the water supply to the machine.
2. Remove any clothing or items from the washer.
3. Locate the drain pump filter at the bottom front of the machine. The filter is typically behind a panel that can be removed by loosening a few screws or releasing a latch.
4. Place a towel or shallow dish underneath the filter to catch any water that may spill out.
5. Twist the filter counterclockwise and pull it out. The filter may be clogged with lint, debris, or small objects such as coins or hairpins.
6. Clean the filter by rinsing it with water or using a soft brush to remove any buildup. Be sure to remove any obstructions.
7. Reinstall the filter by twisting it clockwise and securing it in place.
8. Replace the front panel and secure it with the screws or latch.
9. Plug the washer back in and turn on the water supply.
10. Run a test cycle to ensure the machine is draining properly and the error code has been cleared.

If the obstruction cannot be cleared by cleaning the drain pump filter, there may be a larger blockage in the drain hose or a malfunctioning drain pump. In these cases, it may be necessary to call a qualified technician to diagnose and repair the issue.