Description
The Fenwal 35‑605500‑003 ignition control module is a reliable 24 VAC direct spark ignition (DSI) controller designed for gas‑fired HVAC systems and combustion appliances. This microprocessor‑based control provides precise timing, flame sensing, and safety monitoring to ensure dependable burner start‑up and operational efficiency. It is suitable for furnaces, boilers, water heaters, unit heaters, and other gas‑fired equipment that require controlled ignition and flame detection.
Key Features
- Direct Spark Ignition Technology for fast, consistent ignition of natural gas, propane (LP), or manufactured gas applications.
- Operates with 24 VAC control power, compatible with standard HVAC low‑voltage systems.
- Microprocessor‑based control with built‑in diagnostics including LED status indicators, making troubleshooting easier.
- Zero second pre‑purge simplifies ignition sequence and helps reduce cycle time.
- Seven‑second trial for ignition (TFI) provides a reliable window for flame establishment.
- Detect‑A‑Flame flame sensing enhances safety by confirming flame presence before allowing continued operation.






