Range and oven parts, in plain words.

Eleven parts between the knob and the flame. Several are electrical, which is why the igniters of a gas range do not work in a power outage, and why a burner can click with no gas fault at all.

Spark module

The box that makes the clicking: it supplies the high-voltage spark at each burner’s electrode. Viking’s service manual calls it the re-ignition module, wired in series with a switch on the burner valve, and says it sparks whenever no flame is sensed at the electrode. On Wolf’s legacy dual fuel ranges the modules sit under the burner pan, beneath a shield that keeps spills off them.

• Constant sparking: Wolf’s charts list a module wired wrong or failed, alongside a burner head out of position and a failed switch at the valve
• Before any part: a burner that clicks and will not light

Top burners · electrical, though the range is gas

Spark electrode, or surface igniter

The white ceramic post with a metal tip beside each burner. Wolf’s manuals give it two jobs: it supplies the spark, and it senses the flame, so the sparking stops once the burner is lit and starts again if the flame goes out with the valve open. Monogram places it at the rear of each burner base and asks that it be kept dry and clean.

• Sparking that continues after the burner lights: Viking’s guide lists wet or dirty igniters, and a supply not grounded or with its polarity reversed
• Monogram’s chart: food residue on the tip, or burner slots near the electrode clogged
• A cracked or damaged electrode, in Wolf’s chart for an intermittent spark

Top burners · kept dry, per Wolf and Monogram

Burner valve, knob and ignition switch

Behind every knob is a valve that opens by degrees; how far it opens sets the gas reaching the burner, and so the flame. A small switch on the valve calls for the spark when the knob turns: Viking’s guide says the control is both a gas valve and an electric switch. Wolf describes its push-to-turn knobs as a child-safe design.

• Constant sparking, or no spark at one burner: a failed micro switch at the valve is on Wolf’s list for both
• A knob that does not spring back when pushed in and released, which Wolf’s guides ask owners to check

Top burners · gas and electricity in one part

Burner head, cap and ports

The parts that lift off for cleaning. Gas and air leave through the ports, the ring of small openings where the flame sits, and the cap forms the top of them. The cap has one right position: Wolf and Monogram ask for it seated flat, and Viking and Monogram key the head to the base so that it lines up with the igniter.

• Poor ignition: partially plugged ports, or a head not seated, in Wolf’s chart
• Burners that do not burn evenly: Monogram’s chart names caps seated wrong and clogged slots
• Yellow on one burner after cleaning: is it the burner?

Top burners · what an owner may lift off differs by maker

Dual-stacked burner and its simmer tier

Two burners in one. Wolf’s dual-stacked burner has two tiers of ports, the main flame above and a simmer flame below with an orifice of its own; past the detent at the lowest setting, the flame moves to the second tier. Wolf’s legacy dual fuel manual rates the large burner at 15,000 Btu on high and 1,800 on high simmer. On Monogram’s dual-flame stacked burner the lower flame always lights and stays on.

• A popping noise at simmer on a legacy Wolf dual fuel range: its chart lists a burner head not seated, dirty or damaged
• A full ring of flame at simmer is correct: Wolf says the flame keeps its diameter and only the heat drops

Top burners · Viking’s name for its low settings is VariSimmer

Pressure regulator

Gas arrives at one pressure and the burners are built for a lower one; the regulator on the appliance holds the manifold at that figure. Wolf’s manuals give 5 inches of water column on natural gas and 10 on propane, from a supply of no more than 14, and say why it matters: the burner orifices are sized for the pressure the regulator delivers.

• Gas pressure is a listed cause, in Wolf’s charts, of poor ignition and of a tall or yellow flame; it is checked with a manometer
• Every burner yellow at once: is it the gas supply?

Gas side · the appliance’s own part; upstream of it is the gas company’s or a licensed gas contractor’s

Hot-surface igniter, or glow bar

An igniter that lights gas with heat, not with a spark. It glows orange, and the gas waits for it: Monogram’s manual says the Glo-Bar of its grill takes about 45 seconds to reach temperature, and that gas is supplied only once it has. In Wolf’s older R Series ranges the oven’s gas valve operates when the igniter draws 3.3 to 3.6 amps. GE notes that the orange glow in a gas oven is often mistaken for the flame.

• A glow with no flame after it: Wolf’s manual has the igniter replaced if it is not drawing 3.3 to 3.6 amps, which is read with a meter
• The rest of the list for a cold oven: an oven that will not heat

Gas ovens, griddles and grills · Monogram: fragile, it can chip or break

Gas safety valve

The valve that will not open on trust. In a glow-bar oven it works with the igniter: Wolf’s R Series manual calls it a bi-metal valve, and it passes gas only when the igniter is drawing its full current. In a spark-lit oven it is a solenoid, opened by the ignition module. GE’s summary of the cycle: gas is used only while the oven is actively heating.

• An oven burner that does not light: Wolf’s chart names the igniter first and the valve second, then the wiring, the thermostat, the power and the gas

Gas ovens · inside the appliance, and still gas work: a technician’s part

Direct spark ignition module

The other way to light an oven or a griddle: a spark, with a board that checks for flame. In Viking’s manual for its gas self-clean ranges the module opens the gas valve and sparks, and typically confirms a flame after two sparks; if none appears it closes the valve, waits and tries again, then locks out with valve and spark both off. The board on Wolf’s griddle does the same in three tries.

• An oven or griddle indicator light flashing on a Wolf gas range: the flame was lost and the unit locked out, Wolf’s guide says; knob off, then on

Gas ovens and griddles · Wolf and Viking

Charbroiler igniter and infrared burner

A charbroiler does not cook over open blue flames. Its burner is a bed of porous ceramic tile that glows orange-red and gives its heat as infrared; Wolf rates it at 16,000 Btu. On Wolf’s dual fuel ranges the igniter is a spark electrode fixed 1/32 of an inch above the tile. Monogram’s infrared grill lights from a Glo-Bar instead.

• Clicking that will not stop: Wolf’s first answer is the knob, set fully at Hi
• Constant sparking, in Wolf’s chart: a dirty, damaged or misadjusted sparker

Gas side · Wolf and Monogram warn against touching the igniter

Griddle thermostat

A griddle is the one top burner set by temperature, not by flame size. On a Wolf the thermostat’s sensing bulb lies in a channel under the plate, joined to the control by a thin capillary tube, and the light by the knob cycles as the burner holds the setting. Viking fits an electronic thermostat. Monogram’s is set from 200°F to 450°F.

• A griddle that cannot hold its temperature: Wolf’s chart lists a kinked or pinched capillary tube, and a bulb not seated in its channel

Gas side · a temperature setting, not a flame setting

Five parts that move air, close the cavity and light it. None of them makes heat.

Cooling fan, or blower

Not the convection fan. This one never touches the food: it cools the internal parts, the door lock and its circuits among them. Wolf’s legacy dual fuel ranges carry it at the rear, between the burners and the oven, and run it at low speed, then at high from 430°F. Viking says that if it does not come on during a clean cycle, the cycle should be cancelled and service called.

• A fan still running after the oven is off: normal, per Monogram
• A noisy cooling fan, in Wolf’s chart: loose wiring, a loose air diverter bracket, or the motor

Ovens · Wolf asks that the air intake above the door stay clear

Door hinge

An oven door is heavy, and the hinge is a spring and a damper working against that weight. On a Wolf range one hinge arm is spring-loaded and the other is a hydraulic damper; Viking’s doors have a gentle-close mechanism and Monogram’s a soft close. Wolf’s manual warns its own technicians that a released hinge can recoil quickly.

• A door out of line with the panel above it: on a Wolf, height is adjusted at the hinge pocket
• On a Viking, a door not shut tight enough for the latch to lock, so self-clean will not run

Ovens · spring-loaded, and not a part for an owner to take apart

Door gasket

The soft seal between the oven door and the cavity. Viking calls it essential for a good tight seal, and all three makers ask the same of the owner: leave it alone. Wolf’s guides say rubbing or moving it may compromise the seal; Monogram’s says it has an extremely low resistance to abrasion.

• Monogram’s list for replacement: worn, frayed, damaged in any way, or displaced on the door

Ovens · never cleaned, per all three makers

Door lock motor

The latch that holds the door shut through a self-clean: a small motor with switches that report when the door is locked and when it is free. Wolf’s manuals call the assembly the MDL. The door locks at the start of the cycle and stays locked until the oven has cooled, below 300°F on Wolf’s legacy ovens and below 550°F on its current ones.

• Err 01 on a legacy Wolf dual fuel range: the lock’s switches not sensed within 60 seconds of the motor being driven
• A door still locked after the oven is cold: what is reported after a clean

Self-cleaning ovens only

Oven light and its transformer

Halogen in all three makes, and not always at house voltage. Wolf’s service charts for its L Series wall ovens and legacy dual fuel ranges list a 12-volt, 20-watt light fed through a 120-to-12-volt transformer; Viking’s gas self-clean ranges have a halogen light transformer too. Current Wolf guides call for a 40-watt halogen bulb.

• Wolf’s wall oven chart: one bulb out is the bulb; both out is the fuse, the door switch, the keypad or the transformer
• Lights off during a clean cycle: by design, on a Wolf and a Monogram

Ovens · on a Wolf, the bulb at the top of the cavity is left to service

Retail prices on October 5, 2026, parts only, one store per maker: GuaranteedParts for Wolf, AllVikingParts.com (its “Our Price”) for Viking, AppliancePartsPros.com for Monogram. These are market prices, never ours. Under each price, the part number and the models or serials the store lists it for.