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Error code reference

Electrolux Dryer Error Code 0x21

Condense Pump Error

Electrolux codesElectrolux dryer codes

Condense Pump Error – Wiring defective or Pump defective or Main Board defective.

First step from the service manual

Check that all connectors are correctly inserted and verify Condense Pump wiring terminals are connected properly.

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

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  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
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What 0x21 means on a Electrolux dryer

Error code 0x21 on an Electrolux dryer indicates a Condense Pump fault. This error is specific to condenser dryers, which collect moisture extracted from laundry in an internal reservoir rather than venting it outside. The condense pump is responsible for moving collected water from the heat exchanger area to the reservoir tank. When the control board detects an abnormal condition in the pump circuit, it triggers this fault code and halts the drying cycle to prevent overflow or component damage.

The three root causes identified for this error are wiring defects, a failed pump, or a faulty main control board. Wiring defects are the most common starting point for diagnosis and include loose connector pins, corroded terminals, pinched harness wires, or broken conductors in the pump wiring circuit. A defective pump may present as a motor winding failure, a seized impeller, or an internal short or open circuit within the pump assembly itself. Main board faults are the least common cause but can occur if the board's pump driver circuit fails to deliver correct voltage or properly read pump feedback.

Diagnosis should begin with a thorough inspection of all connectors in the condense pump circuit. Verify that each connector is fully seated, that the terminals are not pushed back or corroded, and that the wiring harness shows no signs of chafing or heat damage. If wiring checks out, resistance and continuity testing of the pump windings can help confirm whether the pump itself has failed. Only after eliminating wiring and pump faults should the main control board be considered as the cause.

Source: manufacturer service documentation.

Common causes of 0x21

  1. 01

    Loose or disconnected wiring connector

    Wiring / connection

    The connector plugged into the condense pump may have vibrated loose or was not fully seated during a previous repair. Inspect all pump circuit connectors for firm seating and check terminals for corrosion or pushed-back pins.

  2. 02

    Damaged wiring harness

    Part replacement

    Wires in the condense pump harness can become pinched, chafed, or broken over time, causing an open or short circuit in the pump circuit. A visual inspection and continuity test of the harness from the pump to the control board can confirm this.

  3. 03

    Failed condense pump

    Part replacement

    The pump motor windings can develop an open or short circuit, or the impeller can seize, preventing normal operation. Testing the pump for correct resistance across its terminals and confirming it receives proper voltage will help isolate this fault.

  4. 04

    Corroded or faulty wiring terminals

    Wiring / connection

    Moisture exposure in the pump area can cause terminal corrosion that increases resistance in the circuit to the point where the control board registers a fault. Cleaning or replacing corroded terminals may resolve the error without replacing the pump itself.

  5. 05

    Defective main control board

    Part replacement

    If the pump and all associated wiring test correctly, the pump driver circuit on the main board may have failed. This is the least common cause and should only be concluded after wiring and pump components have been ruled out.

See the test procedure for each cause

Frequently asked questions about 0x21

What does 0x21 mean on a Electrolux dryer?
Error code 0x21 on an Electrolux dryer signals a Condense Pump Error. The control board has detected a fault in the condense pump circuit, which can be caused by defective wiring, a failed pump, or a faulty main control board. The dryer stops operation when this error appears to prevent potential water overflow inside the appliance.
How do I fix error code 0x21 on my Electrolux dryer?
Start by unplugging the dryer and inspecting all wiring connectors associated with the condense pump, ensuring each is fully and firmly seated with no corroded or damaged terminals. If connectors are secure, check the wiring harness for any visible damage such as pinching or chafing. If the wiring checks out, the pump itself should be tested for correct resistance and continuity, and replaced if it has failed. A main control board replacement should only be considered after the pump and wiring have been ruled out.
Is it safe to use my Electrolux dryer when error 0x21 is showing?
It is not recommended to continue operating the dryer while error 0x21 is active. The condense pump moves water collected during the drying process, and if the pump is not functioning, water can accumulate and overflow inside the unit. Running the dryer in this condition risks water damage to internal components.
How much does it cost to repair error code 0x21 on an Electrolux dryer?
Repair costs vary depending on the root cause. If the issue is simply a loose connector, there may be no parts cost involved. A replacement condense pump typically ranges from $30 to $90 in parts, while a new main control board can range from $100 to $250 or more. Adding professional labor charges will increase the total cost depending on your location and the technician's rates.
Will resetting my Electrolux dryer clear the 0x21 error code?
A power reset may temporarily clear the error code, but if the underlying fault in the pump circuit has not been corrected, the code will return once the dryer attempts to run the condense pump again. Resetting alone is not a fix and should only be used as part of the diagnostic process after correcting any identified wiring or component faults.

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