LG · Dryer Serious
gAS — No gas supply detected (gas models)
On gas dryers, gAS indicates the burner failed to ignite or stay lit. The igniter glows but the flame sensor never detects flame, so the main board cuts gas after the safety retry limit.
- Keep using it?
- Limited use only
- DIY difficulty
- Easy
- Verified against
- lg.com ↗
How to fix it
- Confirm the gas valve behind the dryer is fully open and other gas appliances work.
- Bleed the line by running a gas range burner for 30 seconds.
- Unplug the dryer for 60 seconds and try a Timed Dry; listen and watch for the igniter to glow bright orange and the burner to light.
- If igniter glows but no flame, replace the gas valve coil kit.
- If igniter is dim or never glows, replace the igniter.
- If burner lights briefly then drops out repeatedly, replace the flame sensor (radiant sensor).
Why it happens
Typical signs: gAS on display · Drum tumbles but stays cold · Clicking igniter with no flame · Other gas appliances also recently restored after service
- Gas shut-off valve closed Manual shutoff behind the dryer or at the meter is closed.
- Air in the supply line Common after gas service or LP tank refill — bleed by running another gas appliance first.
- Kinked or crushed gas line Flex connector pinched behind the dryer.
- Failed gas valve coils Open or shorted booster/secondary coils prevent the valve from opening.
- Weak igniter Igniter glows dimly and does not heat the valve enough to open.
- Faulty flame sensor Sensor does not confirm flame and aborts the cycle.
Parts you may need
If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.
More LG dryer codes
Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: lg.com.