Why do gas furnace control boards fail? Another one of my hvac training videos which deals with a common furnace repair. As an hvac apprentice or experienced journeyman, you have to know why control boards are not working. Control or circuit board failure can be frustrating because they tend to go out intermittently. ESD or static electricity will cause a furnace control board to fail over time. Electronics fail over time, but other damage caused by a power outage, power surge, or another voltage spike like someone taking a power pole out. A blown fuse can prevent the circuit board from working too. So really a myriad of things can happen to cause a gas furnace control board to fail. Greg Fox HVAC training videos on You Tube come Fox Family Heating and Air in Sacramento in 2020. Please visit our website @ http://www.foxfamilyhvac.com/ Call or text us at (916) 877-1577 to schedule an appointment. Fox Family Heating and Air Conditioning, Inc. proudly serves the entire Sacramento Valley including Sacramento, Elk Grove, Roseville, Citrus Heights, Davis, Folsom, Rancho Cordova, Rocklin, Antelope, Arden Arcade, Auburn, Cameron Park, Carmichael, Diamond Springs, El Dorado Hills, Elverta, Fair Oaks, Florin, Foothill Farms, Foresthill, Georgetown, Gold River, Granite Bay, La Riviera, North Highlands, Orangevale, Parkway, South Sacramento, Pollock Pines, Rancho Murieta, Rio Linda, Rosemont, Shingle Springs, Vineyard, Wilton, Penryn, Loomis, Newcastle, Auburn Lake Trails, Garden Valley, Coloma, Plymouth, Amador City, Sutter Creek, Ione, West Sacramento. Call or Text (916) 877-1577 or visit our website online for more information at http://www.foxfamilyhvac.com/