If your washing machine won’t drain, it could be due to several reasons, most of which are relatively easy to troubleshoot. Here are some possible causes and solutions:

1. Clogged Drain Hose: The drain hose may be blocked by lint, small clothing items, or other debris, which prevents water from draining. Check the hose for any visible obstructions, and ensure it is not kinked or twisted.

2. Blocked Drain Pump: Small objects like coins, or fabric threads can become trapped in the drain pump, causing blockages. Many washing machines have a pump filter that can be accessed and cleaned to remove any debris.

3. Lid Switch Malfunction: In some top-loading washing machines, the lid switch must engage for the washer to begin the draining process. If the switch is defective, it may prevent the drain cycle from starting.

4. Faulty Drain Pump: The drain pump itself could be broken or malfunctioning, especially if the washer makes unusual sounds during the draining cycle. A damaged pump may need to be replaced.

5. Belt Issues: Some washing machines use a drive belt to help drain water. If the belt is loose, worn, or broken, the pump may not work properly, resulting in drainage issues. Check and replace the belt if necessary.

7. Control Board or Timer Issues: In some cases, a malfunctioning control board or timer can prevent the washer from advancing to the drain cycle. Resetting the washer might help.

For minor issues, checking and cleaning components such as the drain hose, pump filter, and coin trap may solve the problem. If the washer still won’t drain after these steps, consider consulting a technician for a more in-depth inspection, especially if parts need replacement.