Fenwal 35-665913-119 Ignition Module

The Fenwal 35-665913-119 Ignition Module is a specialized control component designed to manage the ignition sequence in compatible HVAC heating equipment, including furnaces, boilers, and unit heaters. It works by monitoring safety circuits, controlling spark generation, and verifying flame presence before allowing continued burner operation. This process helps ensure safe and efficient system startup while maintaining reliable performance. Commonly used in residential and commercial heating systems, the ignition module enhances operational safety, improves ignition accuracy, reduces downtime, and supports consistent, energy-efficient heating performance throughout the equipment’s service life.