Gas burnersIgniter and Spark Module Faults
A burner that clicks and clicks after it lights, or one that never sparks at all, usually points to a wet or cracked igniter, a stuck valve switch, or a failing spark module. The tech checks each electrode gap and listens for which burner the module is firing.
- Igniter electrode and ceramic insulator inspection
- Valve switch and harness continuity test
- Spark module output check and replacement
Flame qualityWeak, Yellow or Lifting Flames
A healthy flame is crisp and blue. Yellow tips, lazy flames or flames that lift off the ports point to clogged burner ports, a misaligned burner cap, a dirty orifice or a regulator problem. The pro clears the ports, reseats the cap and head, and checks pressure with a manometer.
- Burner port and orifice cleaning
- Cap and head alignment on sealed burners
- Regulator and manifold pressure test
Electric coilCoil Elements, Receptacles and Switches
A coil that only heats on high, or never heats at all, gets tested with a multimeter at the element, the burner block and the infinite switch. Burnt receptacles are common on older ranges and are a fire risk worth fixing right away.
- Element resistance test
- Burner receptacle and terminal replacement
- Infinite switch diagnosis
Smooth-topRadiant Elements and Glass Tops
Glass ceramic cooktops hide radiant elements and a limiter under the surface. A zone that stays dark, a hot-surface light that never goes out, or a cracked or crazed top all need a pro, and a cracked top should not be used until it is replaced.
- Radiant element and limiter testing
- Hot-surface light and sensor checks
- Cracked or crazed glass top replacement
InductionInduction Cooktop Errors
Induction cooktops throw error codes when a pan is not magnetic, the cooling fan stalls, or the power board fails. The pro reads the code, tests cookware compatibility with a magnet, and checks the fan and board before any part goes in.
- Error code lookup and cookware check
- Cooling fan and airflow inspection
- Power or generator board diagnosis
Controls and fitKnobs, Valves, Conversions and Tip Safety
A knob that spins without turning the valve, a valve stem that sticks, or a move from natural gas to propane all land in this group. The tech can swap orifices for the new fuel, adjust the regulator, and fit an anti-tip bracket on slide-in and freestanding units.
- Knob and valve stem replacement
- Natural gas to LP orifice conversion
- Anti-tip bracket installation