Description
The Fenwal 35‑665535‑011 24 VAC Ignition Control Module is a microprocessor‑based hot surface ignition (HSI) control board engineered to deliver safe and reliable ignition sequencing in gas‑fired heating equipment such as furnaces, boilers, water heaters, and other HVAC combustion systems. Designed as a direct OEM replacement part, this control module integrates flame sensing, blower control logic, and built‑in safety interlocks to help ensure dependable system starts and efficient operation.
Key Features
- OEM‑grade hot surface ignition control board built for gas‑fired HVAC systems.
- Operates on 24 VAC with integrated flame sensing, blower relay control, and safety monitoring.
- Three ignition tries with reliable ignition timing for improved start‑up success.
- 15‑second pre‑purge and 15‑second inter‑purge intervals support safe combustion sequencing.
- 4‑second Trial‑For‑Ignition (TFI) cycle ensures timely ignition.
- On‑board diagnostics with LED feedback simplify troubleshooting and maintenance.
- Compatible as a direct replacement for worn or failed ignition control modules in gas furnaces, boilers, and similar equipment.
