Check the gas valve located behind the dryer and make sure it is in the “Open” position. If the valve was accidentally turned off, the dryer won’t be able to produce heat.
Take out the lint trap and remove any lint stuck within the lint trap housing. Remove all the lint from the trap and around the rim of the housing to prevent such buildup from happening.
Remove the exhaust hose from the dryer and check for any kinks or other obstructions. Run hot water down the hose to remove any lint buildup.
Check the outdoor exhaust vent and take out any leaves, bird nests or other debris blocking the vent. Take the time to do this at least once a month to ensure there are no obstructions.
Remove the bottom toe panel to reach the burner assembly. Turn the dryer on a cycle with high heat and watch the igniter. Check for signs of a glow or sparks. If you don’t see anything happening with the igniter, it means the igniter is faulty and needs replacing.