JennAir JGD3430BS Repair of the JX3 Gas Downdraft Cooktop
Gas and downdraft ventilation share one 30-inch surface on the JGD3430BS, a JX3 cooktop with four sealed burners, one of them a 17,000 BTU ultra-high output burner. It is the kind of unit you find in an island, where nothing overhead can catch smoke and the vent has to pull downward through a duct in the cabinet.
That combination gives us two systems to inspect. For the burners, we clean caps and ports, dry igniters and test the spark module. For the downdraft, we pull the filter, look at the blower wheel and check the duct, because grease collects below the surface where you never see it.
If you smell gas, leave the house and call the gas utility from outside. You receive a price in writing before work starts, and our repair carries a 30-day workmanship warranty.
Grease on the filter and blower wheel is the most common cause. We clean both, check the motor speed and look for a crushed or blocked duct run below the cabinet.
Running the high burner makes more steam and smoke, so turn the downdraft on before you start. A clean filter lets it keep up with the 17,000 BTU burner.
No, the burner and downdraft are separate systems. The usual cause is residue or moisture at the igniter or a blocked port. We clean and test the spark to find the answer.
Book in about a minute, or call the desk. Same-day windows inside the Loop on most days, next-day across the rest of Houston.
