The E21 error on your Hoover Washing means the machine is unable to drain water properly within the expected time. This typically indicates a blockage in the drainage system or a faulty drain pump that needs immediate attention to prevent water damage.
| Error code | E21 |
|---|---|
| Meaning | Drainage fault - water not draining within the set time limit |
| Severity | Medium — Machine will not complete cycles until resolved |
| Time to fix | 15–45 minutes |
| Tools needed | Towels, shallow container, pliers, screwdriver |
What the E21 error means
The E21 error code appears when your Hoover washing machine detects that water is not draining away as quickly as it should during the wash or spin cycle. The machine has a built-in timer that monitors how long the drain pump runs, and if water remains in the drum after this period, the error triggers and the cycle stops. This is a protective measure to prevent flooding and damage to internal components.
Common causes
- Blocked or kinked drain hose preventing water from flowing out properly
- Clogged drain filter filled with lint, coins, hair, or small items like buttons
- Faulty or jammed drain pump that cannot expel water effectively
- Blockage in the waste pipe or standpipe where the machine connects to household plumbing
- Foreign objects stuck in the pump chamber or impeller preventing rotation
- Pressure switch or sensor malfunction incorrectly detecting water levels
How to fix the E21 error
- Check and clean the drain filter Turn off and unplug the machine. Locate the drain filter access panel at the front bottom of the washer. Place towels and a shallow container underneath. Slowly unscrew the filter anticlockwise and remove any debris, lint, or objects. Rinse the filter under running water and securely refit it.
- Inspect the drain hose Pull the machine away from the wall and examine the drain hose at the back. Check for kinks, twists, or crushing that could restrict water flow. Disconnect the hose from the standpipe and check inside for blockages. Run water through the hose to ensure it flows freely, then reconnect securely.
- Check the standpipe or sink connection Ensure the household waste pipe is not blocked. Pour a bucket of water down the standpipe to verify it drains quickly. If the water backs up or drains slowly, you may have a plumbing blockage that needs clearing before the washing machine will drain properly.
- Examine the drain pump Access the pump by removing the filter and shining a torch into the opening. Check if the impeller rotates freely by turning it gently with your fingers. Remove any obstructions like small socks, hairpins, or debris. If the pump makes unusual noises or does not spin, it may need replacement.
- Run a test cycle Once you have cleared blockages and checked all components, replace the filter securely and run a drain or spin cycle without laundry. Monitor the machine to ensure water drains completely and the error does not reappear. If the E21 persists, the drain pump itself may be faulty.
- Consider professional repair If you have cleared all visible blockages but the error continues, the drain pump motor may have failed or there could be an electrical fault with the pressure sensor or control board. Contact a qualified Hoover engineer for diagnosis and repair.
FAQ
Can I still use my Hoover washing machine with an E21 error?
No, you should not attempt to use the machine with an E21 error. The machine will not complete wash cycles properly and water will remain trapped in the drum, which can lead to unpleasant odours, mould growth, and potential water damage if you force the door open.
How much does it cost to fix an E21 error on a Hoover washing machine?
If the problem is a simple blockage, the fix costs nothing but your time. If you need to replace the drain pump, expect to pay between £30 and £60 for the part, or £80 to £150 including labour if you hire an engineer. Always check your warranty first as drainage faults may be covered.
How do I manually drain my Hoover washing machine with an E21 error?
Place towels around the base of the machine and position a shallow tray beneath the filter door. Slowly unscrew the drain filter and allow water to flow out into the tray, emptying it as needed. This process may take several minutes if the drum is full. Once drained, you can open the door safely.
