Four sealed burners adding up to 72,000 BTU on natural gas is a lot of heat in a 30-inch rangetop, and the PCG304G is usually found in a kitchen that has a separate wall oven. The control knobs sit on the front, so boil-overs often run straight into the knob area and the igniter wiring behind it.
Because the unit also ships with an LP nozzle set, one early question is which gas it is actually running. A conversion done with the wrong orifice, or none, causes lazy flames and soot on pans. We check the nozzles and gas pressure at the burner, then the igniter and spark module on the 120 V supply.
Gas smell is always handled first. The successor listed by Thermador is PCG305P, and we confirm your rating plate before ordering any parts.
We confirm the nozzle set installed, the regulator setting and the flame shape at each burner. A mismatched orifice is a common cause of yellow flames and soot, and it is correctable.
The very small flame is sensitive to a dirty port or a slightly weak igniter. We clean and test it first, because those are inexpensive to fix.
The 120 V plug only powers the igniters and reignition. Cooking is all gas, but a dead outlet or tripped breaker stops the sparking.
Request a visit online in about a minute or phone our coordinators. Close-in neighborhoods often see a same-day slot; the outer counties usually get the next day across Houston.