Description
The Fenwal 35‑665535‑113 Hot Surface Ignition Control Module is a high‑quality OEM ignition control board engineered to restore reliable and safe ignition performance in gas‑fired heating systems. Built with a microprocessor‑based design, this 24 VAC control module expertly manages ignition sequencing, flame sensing, combustion blower control, and safety monitoring to help ensure efficient and consistent system operation.
Key Features
- OEM‑grade hot surface ignition control module designed for gas‑fired HVAC systems including furnaces and combustion appliances.
- 24 VAC operation with precise ignition sequencing, flame sensing, and safety monitoring.
- Three ignition attempts with a 7‑second TFI cycle after a 15‑second pre‑purge for dependable start‑ups.
- Built‑in combustion blower relay control with inter‑purge timing for enhanced system airflow management.
- Microprocessor‑based logic with on‑board LED diagnostics simplifies troubleshooting and maintenance.
- Direct replacement part for worn or outdated ignition controls, making installation easy and cost‑effective.






