Invalid Command Code (EC:03 or EC03)

• Communication Breakdown: The error code suggests the control board sent a command to another component (motor controller, user interface board, etc.) that the component either couldn't understand or couldn't execute due to internal issues.

Potential Causes

• Software Glitch: A temporary software glitch within the control board or the receiving component could be causing the miscommunication.
• Component Malfunction: A more serious issue could be a malfunctioning component (motor controller, user interface board, etc.) that misinterprets or fails to respond to commands from the control board.
• Wiring Issues (Less Likely): In rare cases, loose or damaged wiring connections between the control board and other components might disrupt communication.

Diagnosing and resolving an invalid command code error (EC:03 or EC03) effectively often involves:

• Accessing internal components: A qualified technician can safely access the washer's interior to inspect wiring connections and potentially replace faulty components.
• Using diagnostic tools: They might use specialized diagnostic tools to pinpoint the exact source of the communication issue.
• Software updates (if applicable): In some cases, a software update for the control board might be necessary to resolve the glitch.

Due to the potential need for internal access, diagnostic tools, and software updates, user troubleshooting is not recommended for this error code.

Recommended Course of Action

• Contact Speed Queen Support: Since the error code points towards a communication issue within the washer, contacting Speed Queen's customer support is highly recommended. They can provide further guidance and determine if the issue requires a qualified technician's expertise.
• Contact a Qualified Technician (Strongly Recommended): Consulting a qualified appliance repair technician is strongly advised. They have the expertise and tools to safely diagnose the problem accurately (software glitch, component malfunction, wiring issue) and recommend the appropriate solution (software update if applicable, replacement of faulty components, or repair of wiring).

Safety Considerations

• Avoid Electrical Work: Leave any disassembly or repairs involving electrical components to a qualified technician to prevent electrical hazards.
• Do Not Operate Washer with Error: With this error, avoid using the washer to prevent further malfunctions due to miscommunication between components.

By following these recommendations and prioritizing safety, you can get the proper diagnosis and repair for the EC:03 or EC03 error on your Speed Queen washer. Consulting a qualified technician ensures the safe and effective resolution of this communication error within your washer.