This Lg Dryer would not open the gas valve to heat. We found that the gas valve along with the Control board went bad. They have an identical washer dryer set up next to it and when they did the installation they connected both ducts of each dryer to the same, single, exhaust duct. When they use one dryer, the hot air pours into the second dryer that is not being used through the duct and creates moisture inside the whole dryer which leads to corrosion and rust and shorting of electronic pieces.