Speed Queen washer won't spin but motor hums? Learn quick troubleshooting steps to diagnose and fix the issue. Get your washer spinning again!
The Speed Queen washer's Motor Control Unit (MCU) manages the motor functions. When the spin cycle is initiated, the MCU sends a 120V AC signal to the motor start capacitor and then the motor windings. Simultaneously, the drain pump is activated to remove water. If the drain pump is blocked or the motor is encountering excessive resistance, the MCU may not fully engage the motor to spin, resulting in the humming sound.
The Speed Queen washer fills with water and appears to wash normally, but when it gets to the spin cycle, the motor just hums. The drum doesn't rotate at all.
Disconnect power (Lock Out Tag Out – LOTO) before any disassembly or electrical testing. Electrical components operate at 120V AC, posing a shock hazard. Discharge capacitors before handling.
• Avoid overloading the washer.
• Regularly inspect and clean the drain pump filter.
• Periodically check the drive belt for wear and tear.
Many Speed Queen models have a diagnostic mode. To access it, consult the technical service manual for the specific model. It usually involves pressing a combination of buttons on the control panel in a specific sequence. This mode can reveal error codes not otherwise displayed, providing further diagnostic information.
Follow-up Questions:
{"question": "What are the typical resistance values for the motor windings on a Speed Queen washer?", "answer": "The resistance values vary depending on the specific motor model. Refer to the Speed Queen service manual for your specific model for the correct values. Typically, expect to see a few ohms between the windings, and infinite resistance to the motor case."
}
{"question": "How do I safely discharge a motor start capacitor?", "answer": "Use a 10,000-ohm, 2-watt resistor with insulated alligator clip leads. Connect one end of the resistor to one capacitor terminal, and the other end to the other terminal. Leave it connected for several seconds to fully discharge the capacitor. Never touch the terminals directly."
}
{"question": "Where can I find the service manual for my Speed Queen washer model?", "answer": "You can often find service manuals online through appliance parts retailers, technical documentation websites, or by contacting Speed Queen directly with your model number."
}