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

Technical Background:

The Speed Queen dryer utilizes a gas valve controlled by the Main Control Unit (MCU). The MCU energizes the gas valve solenoids based on signals from the flame sensor and igniter. A proper voltage path and functional components are crucial for safe and efficient operation. The gas valve opens allowing gas to flow to the burner. The igniter glows igniting the gas. The flame sensor detects the flame and signals the MCU to keep the gas valve open. Venting removes exhaust.

Symptoms:

US homeowner reports a distinct gas smell emanating from the Speed Queen gas dryer during operation. The smell may be stronger during the initial start-up phase or persist throughout the drying cycle.

Possible Causes:

Faulty gas valve
Cracked or damaged gas supply line
Malfunctioning igniter or flame sensor
Improperly vented exhaust system
Gas leak at the burner assembly
Lint buildup obstructing airflow

Solution:

1

Shut off the gas supply to the dryer at the shut-off valve.
2

Disconnect the dryer from the power outlet.
3

Using a gas leak detector, check all gas connections, including the supply line, gas valve, and burner assembly. Apply soapy water to connections; bubbles indicate a leak.
4

Inspect the gas valve solenoid coils for continuity using a multimeter. Replace the gas valve if any coil is open or shorted. Normal readings usually fall between 1200-1400 ohms.
5

Examine the igniter for cracks or damage. Test the igniter with a multimeter; it should have a resistance reading of approximately 100-400 ohms.
6

Check the flame sensor for proper operation. Clean the sensor with fine-grit sandpaper. During operation, it should allow the gas valve to stay open after ignition.
7

Inspect the venting system for obstructions, kinks, or disconnections. Ensure the vent is properly connected to the outside and is free from lint buildup. Use a 4-inch diameter vent duct.

Safety Warning:

Lock Out/Tag Out (LOTO) the dryer before performing any repairs. Gas leaks are extremely dangerous. If you suspect a significant gas leak, evacuate the area and call your local gas company or 911. Electrical components operate at 120V AC.

Prevention:

Clean the lint filter after every load. Annually inspect and clean the venting system to prevent lint buildup. Schedule a licensed technician inspection every two years to check gas connections and components.

Expert Tip:

Access the Speed Queen dryer's diagnostic mode by pressing and holding the Start/Pause button while simultaneously pressing the Cycle Selector knob three times within five seconds. This displays fault codes and allows for component testing.

Frequently Asked Questions

•What is the typical lifespan of a gas valve in a Speed Queen dryer?

A gas valve typically lasts 8-12 years, depending on usage and gas quality. Signs of failure include inconsistent heat, gas smell, or complete failure to ignite.

•How do I properly clean the flame sensor?

Use a piece of fine-grit sandpaper (220 grit or higher) to gently clean the surface of the flame sensor. Remove any carbon buildup or oxidation. Be careful not to damage the sensor.

•What type of gas leak detector is recommended for detecting gas leaks in a dryer?

A combustible gas leak detector, also known as a sniffer, is recommended. These detectors can sense even small concentrations of natural gas or propane. Make sure it's calibrated for the type of gas your dryer uses.

Speed Queen Gas Dryer Smells Like Gas: Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the typical lifespan of a gas valve in a Speed Queen dryer?

•How do I properly clean the flame sensor?

•What type of gas leak detector is recommended for detecting gas leaks in a dryer?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: