Speed Queen Dryer Gas Burner Clicking But Not Igniting:... | appliancefaults.com

Technical Background:

The dryer's MCU sends a signal to the igniter to glow and ignite the gas. Simultaneously, it opens the gas valve solenoids to allow gas flow. The flame sensor detects the presence of a flame and signals the MCU to keep the gas valve open. Voltage paths include 120V AC to the igniter and solenoids, and low voltage DC signals between the flame sensor and MCU.

Symptoms:

The homeowner reports that the Speed Queen dryer is clicking repeatedly when attempting to start. The burner does not ignite, and no heat is produced. Clothes remain damp after a full drying cycle.

Possible Causes:

Faulty gas valve solenoids
Defective igniter (glow bar)
Blocked or restricted gas supply
Flame sensor malfunction
Faulty dryer control board (MCU)
Open thermal fuse

Solution:

1

Disconnect power to the dryer at the breaker panel.
2

Locate the gas valve assembly. Using a multimeter, test the continuity of each gas valve solenoid. A lack of continuity indicates a faulty solenoid. Replace as needed.
3

Inspect the igniter (glow bar). If it's cracked or broken, replace it. Also, check for 120V AC to the igniter during startup.
4

Verify the gas supply to the dryer. Ensure the gas shut-off valve is fully open. Check gas pressure with a manometer, it should be around 3.5-4.0 inches of water column.
5

Use a multimeter to test the flame sensor for continuity after the igniter glows. No change in continuity indicates a faulty flame sensor. Replace as needed.
6

Check the thermal fuse located on the blower housing. If it's open (no continuity), replace it. This is a common cause for no heat.
7

If all components test good, the dryer control board (MCU) may be faulty and require replacement or licensed technician repair.

Safety Warning:

Disconnect power to the dryer at the breaker panel before performing any repairs (LOTO - Lock Out Tag Out). Gas appliances can be dangerous. If you smell gas, evacuate the area and call your gas company or a qualified technician. Be aware of high voltage (120V AC) when testing electrical components.

Prevention:

Regularly clean the lint filter after each load. Inspect the dryer vent for obstructions at least twice a year. Ensure proper airflow around the dryer to prevent overheating. Periodically check the gas line for leaks using a soapy water solution.

Expert Tip:

On some Speed Queen models, you can enter a diagnostic mode by pressing and holding the Cycle Selector knob while simultaneously pressing the Start button three times within 5 seconds. This may display error codes or allow component testing.

Frequently Asked Questions

•What is the proper gas pressure for a Speed Queen dryer?

The proper gas pressure is typically around 3.5 to 4.0 inches of water column. Consult the dryer's service manual for the exact specification.

•How do I test the flame sensor on a Speed Queen dryer?

Use a multimeter to check for continuity across the flame sensor terminals after the igniter has been glowing for a few seconds. The continuity should change when the flame is present, indicating that the sensor is working. If the continuity remains unchanged, the sensor is likely faulty.

•Where is the thermal fuse located on a Speed Queen dryer?

The thermal fuse is usually located on the blower housing. It's a small, rectangular component with two wires connected to it. Use a multimeter to test for continuity across the fuse. If there is no continuity, the fuse is blown and needs to be replaced.

Speed Queen Dryer Gas Burner Clicking But Not Igniting: Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the proper gas pressure for a Speed Queen dryer?

•How do I test the flame sensor on a Speed Queen dryer?

•Where is the thermal fuse located on a Speed Queen dryer?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: