Rangetop repair — clicks, no light

A professional rangetop is a simpler machine than the range it resembles: no oven cavity, no convection fan, no self-clean cycle. That means nearly every complaint traces to one of four things — the gas path, the spark path, the flame-sense path, or the way the caps sit on the ports. Sorting which one you have is a fifteen-minute job with the right meter and a straight edge.

Clicking that never stops

A spark module fires a set of electrodes until it sees flame. If one electrode is wet, cracked, carboned or sitting at the wrong gap, the module never sees the flame and keeps firing — often on every burner at once, because most modules spark the whole array together. Owners usually describe this as “all the burners click when I only turn on one,” which is normal behaviour on a module that cannot confirm ignition.

The first check is physical: electrode ceramic intact, tip clean, gap correct, and no spillage bridging the electrode to the burner body. Wiping a boiled-over sauce off an electrode has ended more service calls in this village than any part we stock.

Lights on high, dies on simmer

This is flame supervision doing exactly what it was designed to do. The safety device has to stay hot enough to hold the gas valve open. On high, the flame washes it constantly and nothing goes wrong. On simmer the flame retreats, the sensor cools, and the valve closes — which is safe, and also unusable.

Three causes, in the order we rule them out: a burner cap seated a millimetre proud, which pushes the flame away from the sensor; a sensor whose tip has oxidised and no longer reaches temperature; and a gas pressure or orifice mismatch, which is what you get when a unit built for natural gas was moved to propane or the reverse without a full conversion. That last one is worth naming early, because it is a setup fault, not a wear fault, and it will not improve with time.

Yellow, lifting or leaning flame

A correct flame on a sealed burner is stable, mostly blue, and anchored to the port ring the whole way round. Yellow tips mean the air/gas ratio is wrong or a port is partly blocked. A flame that lifts off the ring means too much pressure or too little port area. A flame leaning consistently to one side almost always means the cap is off its locating features — and caps get knocked out of position every time the grates come off for cleaning.

We seat every cap, clear every port with a proper tool rather than a paper clip, and only then take a pressure reading. Reversing that order wastes your money.

The simmer test we actually run

Anyone can turn a burner to low and say it works. We set the lowest stable setting, put a pan of water on it, and leave it for twenty minutes without touching the knob. A simmer that survives that is a simmer. A simmer that drops out at minute eleven was never fixed, it was warmed up — and that distinction is the difference between a repair and a second visit.

Grates, burner caps and the parts that get cleaned wrong

More rangetop faults come from cleaning than from wear. Burner caps and heads seat in one orientation and one position; a cap replaced slightly out of seat after a clean produces a lifting, uneven or noisy flame that looks like a gas problem and is not. Ports blocked by boil-over are cleared with a soft brush and a fine wire, never by drilling, which changes the port size permanently and the flame with it.

The igniter electrode has to stay dry and its ceramic has to stay unbroken. A cracked electrode arcs to the nearest metal instead of across the gap, which presents as continuous clicking with no light. Water sitting in a well after a clean produces exactly the same complaint until it dries, so a rangetop that clicks and will not light immediately after cleaning is worth leaving alone for an hour before anyone is called.

Grates are heavy, and a grate dropped onto a burner assembly can shift a head enough to break the flame path to its neighbour. If one burner started misbehaving on the day the top was cleaned, that is where we look first.

What the visit includes

A flat diagnostic, credited toward the repair when you approve it, and a written estimate before any part is ordered or any labor is billed. Everything we replace is a genuine OEM part.