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Error code reference

Speed Queen Washer Error Code EC:19

No card reader communication detected.

Speed Queen codesSpeed Queen washer codes

No card reader communication detected.

First step from the service manual

Power down, power up and try again. If error persists, replace control or card reader.

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

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What EC:19 means on a Speed Queen washer

EC:19 on a Speed Queen washer indicates that the main control board has lost communication with the card reader module. Speed Queen washers equipped with card payment systems rely on a continuous data link between the control board and the card reader. When this communication path is interrupted or never established, the control flags EC:19 to alert the technician that the card reader is either offline, disconnected, or non-functional.

The most common triggers for this fault include loose or damaged wiring harness connections between the control board and the card reader, a failed card reader module, or a control board that can no longer send or receive communication signals on that data line. Power fluctuations or transient voltage events can sometimes corrupt communication temporarily, which is why the first diagnostic step involves a full power cycle. Cycling power clears any temporary communication faults and allows the system to re-establish the data link from a clean state.

If the error returns after a power cycle, the fault is persistent and points to a hardware failure rather than a transient glitch. At that point, the diagnostic path narrows to either the card reader assembly itself or the main control board. Inspecting the wiring harness connector at both endpoints for bent pins, corrosion, or a loose seat is an important intermediate step before committing to component replacement. Because the error code does not distinguish between a failed card reader and a failed control board, both components must be evaluated systematically.

Source: manufacturer service documentation.

Common causes of EC:19

  1. 01

    Loose or disconnected wiring harness

    Wiring / connection

    The connector linking the card reader to the control board may have worked loose over time due to vibration. Check both ends of the harness for a secure, fully seated connection.

  2. 02

    Transient communication fault

    Wiring / connection

    A temporary power fluctuation can disrupt the data link between the card reader and control board. A full power cycle, powering the unit completely off and back on, often clears this type of fault.

  3. 03

    Failed card reader module

    Part replacement

    The card reader itself may have failed internally and can no longer communicate with the control board. If the wiring checks out and the error persists after a power cycle, the card reader assembly is the most likely component to replace.

  4. 04

    Damaged wiring harness

    Part replacement

    Wires in the harness between the card reader and control board may be pinched, broken, or corroded, preventing signal transmission. Inspect the full length of the harness for visible damage or continuity issues.

  5. 05

    Failed main control board

    Part replacement

    If the card reader tests functional and the wiring is intact, the control board may have lost the ability to communicate on the card reader data line. Control board replacement is typically the last step in the diagnostic process.

See the test procedure for each cause

Frequently asked questions about EC:19

What does EC:19 mean on a Speed Queen washer?
EC:19 means the washer's control board cannot detect communication with the card reader module. This error appears on Speed Queen washers equipped with card payment systems when the data link between the two components is broken or missing. It can be caused by a loose connector, a damaged harness, a failed card reader, or a faulty control board.
Will resetting the washer clear the EC:19 error?
A power cycle is the first recommended step and will clear the error if the fault was caused by a temporary communication disruption. Power the unit fully off, wait a moment, then power it back on. If EC:19 returns after the reset, the fault is hardware-related and a simple reset will not resolve it permanently.
Is it safe to use the washer while EC:19 is active?
EC:19 is specifically related to the card payment system and does not indicate a mechanical or electrical hazard with the wash system itself. However, the card reader will not function while this fault is active, meaning card payments cannot be processed. Check with your specific installation setup before continuing operation.
How do I fix EC:19 on a Speed Queen washer?
Start by performing a full power cycle to rule out a transient fault. If the error returns, inspect the wiring harness connecting the card reader to the control board, checking both connectors for corrosion, bent pins, or a loose fit. If the wiring is intact, replace the card reader first, as it is the more likely failed component. If the error persists after card reader replacement, the control board will need to be replaced.
How much does it cost to repair an EC:19 error on a Speed Queen washer?
Repair costs depend on which component has failed. A card reader module replacement will typically run in the range of $100 to $300 for the part, plus labor if a technician is involved. Control board replacement tends to be more expensive, often ranging from $200 to $500 or more for the part alone. Getting a professional diagnosis before ordering parts can help avoid unnecessary expense.

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