Gas dryer runs but does not heat; igniter may glow briefly or not at all.

Safety First: Unplug the dryer and shut off the gas supply before servicing. Work in a well‑ventilated area and check for gas leaks after reassembly.

• Step 1 – Observe ignition sequence: With front panel installed but lower access open (if available), restore power and gas. Start a heat cycle and watch: the igniter should glow, then gas should ignite. If the igniter glows but no flame, suspect coils; if it never glows, suspect igniter or fuse.
• Step 2 – Test thermal fuse: Unplug again. Access the blower housing and test the thermal fuse for continuity. Replace if open and clean venting to prevent recurrence.
• Step 3 – Test igniter: Access the burner assembly, disconnect the igniter, and measure resistance (typically 50–400 ohms). Replace if open or physically cracked.
• Step 4 – Replace gas valve coils: If the igniter glows and clicks are heard but no flame or flame only briefly, replace both gas valve coils as a set with OEM parts.
• Step 5 – Check flame sensor: Test the flame sensor for continuity when cool; it should be closed. Replace if open when cool.

After repairs, restore gas and power, check all connections for leaks with a soapy water solution, and test heating.