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Field pattern: pro-style rangetop won't spark or light after a cleaning or boil-over (dry it, clear residue, check ground before the spark module)

Moisture and cleaner residue around the electrodes and switches are the usual causes, followed by a cracked electrode, a wire pushed off during cleaning, and a lost ground or reversed polarity. The common wrong turn is ordering a spark module first; on a single dead burner, the module is rarely the cause because it feeds all electrodes.

Cross-checked ~45 min moderateBrands: Viking, Wolf, Thermador, Pro-style ranges (general)

Before you start

  • Unplug or switch off the breaker before reaching under the top or touching electrode wires
  • Spark modules put out high voltage: do not touch electrodes or leads while sparking
  • Gas valves, orifices and gas lines are not part of this guide; refer gas-side issues to a licensed gas technician
  • If you smell gas, shut everything off, ventilate, no switches

Diagnostic steps

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OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work.

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Field pattern: pro-style rangetop won't spark or light after a cleaning or boil-over (dry it, clear residue, check ground before the spark module) · OnCall Tech