What this code means
The E21 error code tells you the control board has detected that water is not being pumped out of the wash tub fast enough. The drain cycle has exceeded the manufacturer’s expected time limit for emptying the tub, triggering a long pump-out or long drain fault. This code appears most often on front-loading Electrolux washers and is functionally identical to E21 codes on similar brands like Bosch and Samsung.
The fault indicates a drainage failure where the control board sees the water level is not dropping at the required rate. It does not necessarily mean the pump itself is bad. In most cases, the pump is working but cannot move water because of a blockage somewhere in the drain path.
Before You Replace Anything
Many people replace the drain pump when the real issue is a clogged filter or kinked hose. Before ordering a pump, remove and clean the filter and inspect the drain hose end to end.
Common Causes
- Clogged drain filter Lint, coins, and small debris accumulate in the filter and block water flow out of the tub.
- Blocked or kinked drain hose Soap buildup inside the hose, external obstructions, or sharp bends restrict drainage.
- Faulty drain pump The pump motor has failed or the impeller is jammed with debris and cannot spin freely.
- Electrical or sensor malfunction Bad wiring connections, broken harness wires, or a defective control board prevent proper pump operation.
Step-by-Step Fix
- Unplug the washer and use a shop vac to remove any remaining water from the tub before you access components.
- Access the drain filter by tipping the washer onto its back (newer Electrolux models often have the filter on the underside, not the front panel).
- Remove the filter by locating the large opening on the bottom, pulling off the black rubber boot (secured by a tension wire and one Phillips screw), and extracting the plastic filter.
- Clean the filter thoroughly under hot water to remove lint, coins, and debris, then reassemble the boot and screw.
- Inspect the drain hose by removing it from both the washer and the standpipe, checking the entire length for kinks, sharp bends, crimps, or internal blockages.
- Test the drain pump by accessing it through the panel, turning the rotor impeller by hand to confirm it has a springing motion, and removing any debris clogging the impeller.
- Check pump voltage by reconnecting the pump wiring harness, starting a drain cycle, and using a multimeter to verify 120-volt AC at the pump connector while operating.
- Inspect wiring and control board if the pump receives voltage but does not run and the wiring shows no continuity, then replace the control board by unplugging, disconnecting wiring, removing mounting screws, and installing the new board.
Parts Often Needed
| Part | Notes |
|---|---|
| Electrolux washer drain pump | Amazon | Match your model number; verify voltage rating before installation |
| Electrolux washer control board | Amazon | Only needed if pump tests good but still receives no voltage; requires exact model match |
When to Call a Pro
Call a pro if you have cleaned the filter and hose, verified the pump impeller spins freely, and tested the wiring but the E21 code persists. A technician can perform precise voltage and continuity tests on the harness and control board to isolate electrical faults. Also call if you are uncomfortable tipping the washer onto its back to access the underside filter, or if you need help tracing wiring inside the cabinet. If the control board replacement does not resolve the error, the issue may involve a defective water-level sensor or pressure switch that requires diagnostic tools.