Speed Queen Washer Error Code EC:27

EC:27 means the washer detected a diagnostic test card write failure. During a self-test routine, the control system attempted to write data to the card reader and the operation did not complete successfully. This error code points directly to a faulty card reader that needs to be replaced.

EC:27 relates to the card reader system rather than the motor, water, or drum components, so the washer may still complete cycles in some cases. However, operating a machine with an active fault code is not recommended, as the card reader failure may prevent proper payment processing or cause the machine to lock out entirely.

A simple power reset is unlikely to permanently clear EC:27 because the error is triggered by an actual write failure during diagnostics rather than a temporary glitch. The code will return the next time the washer runs its diagnostic routine if the underlying card reader fault has not been corrected. The card reader must be repaired or replaced to resolve the error properly.

A knowledgeable technician or experienced DIYer can resolve EC:27 by first inspecting the card reader wiring harness and connectors for visible damage or corrosion. If the wiring looks intact, the card reader module itself will need to be replaced. Working with the washer's electrical components requires disconnecting power before starting any repairs.

Repair costs depend on whether the issue is limited to wiring or requires a full card reader replacement. Card reader module parts typically range from around $50 to $200 or more depending on the specific model. Adding professional labor, total repair costs can range from roughly $100 to $350 or higher.