Speed Queen Dryer Smells Like Smoke: Troubleshooting... | appliancefaults.com

Technical Background:

The Speed Queen dryer uses a 240V heating element controlled by the main control unit (MCU). The MCU monitors temperature via thermostats and cycling controls. Voltage is supplied to the motor and heating element through wiring harnesses and terminal blocks. A burning smell usually indicates overheating or electrical arcing within these components.

Symptoms:

US homeowner observes a burning or electrical smell coming from their Speed Queen dryer during or after a drying cycle. The smell may be accompanied by reduced drying performance or unusual noises.

Possible Causes:

Excessive lint accumulation causing overheating
Failing heating element
Overheated or failing motor
Worn or damaged drive belt rubbing against components
Electrical wiring issues (loose connections, frayed wires)
Failed start or run capacitor

Solution:

1

Disconnect power to the dryer at the breaker panel.
2

Remove the rear access panel using a 1/4-inch nut driver.
3

Inspect the heating element for breaks or hot spots. Use a multimeter to check for continuity; a reading of approximately 9-13 ohms is normal.
4

Examine the motor windings for signs of burning or damage. Check the motor capacitor for bulging or leaking.
5

Inspect the wiring harness for frayed wires or loose connections. Use a multimeter to check for 120V AC at the terminal block when the dryer is running (be extremely careful).
6

Clean all lint from the dryer vent, lint trap, and inside the dryer cabinet.
7

Replace any damaged components and reassemble the dryer.

Safety Warning:

Disconnect power to the dryer at the breaker panel before performing any repairs. Use proper lockout/tagout (LOTO) procedures. High voltage is present when the dryer is connected to power. Wear appropriate personal protective equipment (PPE).

Prevention:

Clean the lint trap after every load. Annually, disconnect the dryer vent and clean it thoroughly. Inspect the dryer interior for lint accumulation and remove it with a vacuum cleaner.

Expert Tip:

To access the Speed Queen dryer's diagnostic mode, press and hold the Start/Pause button while simultaneously pressing the cycle selector knob three times within five seconds. This will display error codes and allow for component testing.

Frequently Asked Questions

•What resistance reading should I expect from the heating element if it's good?

A good heating element typically reads between 9 and 13 ohms. An open circuit (infinite resistance) indicates a failed element.

•How do I safely test for voltage at the terminal block?

Use a multimeter set to AC voltage. Carefully place the probes on the appropriate terminals (L1 and L2) while the dryer is running. Ensure the probes do not slip and cause a short circuit. Wear insulated gloves and eye protection.

•What's the most common cause of a burning smell in a Speed Queen dryer?

The most common cause is excessive lint accumulation around the heating element, which leads to overheating and a burning smell. Regular cleaning is crucial.

Speed Queen Dryer Smells Like Smoke: Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What resistance reading should I expect from the heating element if it's good?

•How do I safely test for voltage at the terminal block?

•What's the most common cause of a burning smell in a Speed Queen dryer?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: