Dacor RNCT304G Gas Cooktop Repair

The RNCT304G is a gas cooktop in the Dacor Renaissance series, and the manual we reference dates to 2015. A cooktop has no oven below it, so everything we examine concerns burners, igniters, valves and the knobs that control them. That makes diagnosis focused, but access matters, since the working parts are under the counter surface.

Common complaints

• A burner clicks and will not light.
• A burner lights, then fades when turned low.
• All burners tick at once even when only one is on.
• A knob feels loose, stiff or does not spring back.

What a technician looks at

Burner caps and bases come first because they are the easiest to disturb. Then come the igniters, which can be fouled by boil-overs, and the spark module that feeds them. Valves sit below, and a knob that fails to turn smoothly may point there. Moisture in the burner after cleaning is another cause worth ruling out, since wet ports will not take a spark.

Counter cutout and cabinet below

A built-in cooktop sits in a cutout, often over a drawer or a cabinet where pots live. In San Francisco kitchens that space may be packed, and the technician needs it cleared to reach connections. Gas lines, the electrical supply for ignition and any ventilation below must be seen. If a downdraft or hood is installed nearby, its airflow may bend flames sideways, so we look at that too. Our post on a gas cooktop that will not ignite covers the usual sequence.

Safe checks

1. Make sure the cooktop has power at its breaker.
2. Lift each burner cap and reseat it flat.
3. Let any wet burner dry completely.
4. Look at the shutoff handle position.

A smell of gas means going outside, touching no switches, and calling the gas utility or 911. Never touch fittings.

Related

For scope see Dacor cooktop repair; for the wider lineup see Dacor cooktops. A sibling is the RNCT305G. The article on clicking that will not stop may also apply. We diagnose first, estimate in writing and repair only with your approval.

Frequently asked questions