Pro-style ranges

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.