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Error code reference

Electrolux Washer Error Code 21

Water not pumping out fast enough.

Electrolux codesElectrolux washer codes

Water not pumping out fast enough.

First step from the service manual

Refer to test (3) - Check drain hose for restrictions, check 120 VAC at drain pump.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What 21 means on a Electrolux washer

Error code 21 on an Electrolux washer indicates that water is not pumping out of the tub quickly enough during the drain cycle. The control board monitors how long the drain pump runs to remove water, and when the tub fails to empty within the expected time window, the code is triggered. This is a drain performance fault, meaning the system detected a slow or incomplete drain rather than a total pump failure.

The primary diagnostic focus is the drain hose and the drain pump itself. The drain hose should be inspected for kinks, blockages, or improper installation that could restrict water flow. A hose that is pushed too far into a standpipe or has a clog at the outlet can significantly reduce drain rate. The pump should be receiving 120 VAC during the drain cycle, so verifying voltage at the pump terminals confirms whether the issue is electrical or mechanical.

If voltage is confirmed at the pump but draining is still slow, the pump itself may be partially obstructed internally by debris such as coins, lint, or small clothing items, or the pump motor may be weakening. A pump that runs but moves water slowly will still trigger this fault. The drain hose height and routing should also be checked, as excessive standpipe height or a hose routed too high can create back-pressure that the pump cannot overcome efficiently.

Source: manufacturer service documentation.

Common causes of 21

  1. 01

    Kinked or clogged drain hose

    Wiring / connection

    A drain hose that is bent, kinked, or partially blocked by lint or debris restricts water flow and slows draining significantly. Inspect the full length of the hose from the washer to the standpipe or utility sink for any obstructions or sharp bends.

  2. 02

    Drain pump obstruction

    Wiring / connection

    Small items such as coins, buttons, or accumulated lint can lodge inside the drain pump impeller, reducing its pumping capacity. Accessing and cleaning the pump chamber often resolves the fault without replacing any parts.

  3. 03

    No 120 VAC reaching the drain pump

    Wiring / connection

    If the pump is not receiving the correct 120 VAC supply during the drain cycle, it will run weakly or not at all. Testing voltage at the pump terminals during a drain cycle is the recommended first electrical check for this code.

  4. 04

    Faulty drain pump motor

    Part replacement

    A pump that receives proper voltage but still drains slowly may have a failing motor with worn brushes or a weakened impeller. In this case, the pump assembly typically needs to be replaced.

  5. 05

    Improper drain hose installation height

    Wiring / connection

    A standpipe that is too tall or a drain hose routed higher than the recommended maximum can create back-pressure the pump cannot overcome efficiently, resulting in slow drain times that trigger this fault.

See the test procedure for each cause

Frequently asked questions about 21

What does 21 mean on a Electrolux washer?
Error code 21 means the washer detected that water is not pumping out of the tub fast enough during the drain cycle. The control board times the drain process, and if the tub does not empty within the expected window, the machine stops and displays this code. The most common causes are a restricted drain hose, a blocked pump, or an electrical issue with the drain pump. You will often find standing water in the drum when this code is active.
How do I fix error code 21 on my Electrolux washer?
Start by checking the drain hose for kinks, clogs, or improper installation that could be slowing water flow. Next, inspect and clean the drain pump to remove any debris blocking the impeller. If the hose and pump are clear, verify that the pump is receiving 120 VAC during the drain cycle, as a loss of voltage would prevent proper pump operation. If voltage is correct but the pump still performs poorly, replacing the pump assembly is likely the next step.
Is it safe to run my Electrolux washer when error code 21 is showing?
It is not recommended to continue running the washer while error code 21 is active. The machine has stopped because water is not draining properly, and forcing another cycle could leave excess water in the tub or cause the machine to overflow. Address the drain restriction or pump issue before attempting to use the washer again.
Will resetting my Electrolux washer clear error code 21?
Resetting the washer may temporarily clear the code, but it will return if the underlying drain issue is not resolved. The code is triggered by an actual performance condition, slow or incomplete draining, so the root cause must be corrected for the fault to stay cleared. After fixing the drain hose or pump, a reset can be used to restart the machine and confirm the repair was successful.
How much does it cost to repair error code 21 on an Electrolux washer?
If the problem is simply a kinked hose or debris in the pump, the repair may cost nothing beyond your time. If the drain pump motor has failed and needs replacement, parts and labor costs typically range from around $100 to $250 depending on your location and whether you hire a technician. Diagnosing the issue yourself first can help you determine whether a professional repair call is necessary.

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