Description
The Fenwal 35-705701-001 Ignition Control Module is a factory-tested, 120 VAC Direct Spark Ignition (DSI) control designed for reliable ignition and flame sensing in gas-fired heating systems, furnaces, water heaters, and commercial HVAC equipment. Part of Fenwal’s trusted 35-70 Series ignition controls, this potted module combines advanced microprocessor logic with robust construction to deliver precise ignition timing and dependable system performance.
Key Features
- Direct Spark Ignition (DSI): Provides a consistent high-voltage spark to ignite burners without a standing pilot.
- Microprocessor-Based Control: Ensures precise and repeatable ignition sequences for safe, efficient operation.
- 4-Second Trial for Ignition (TFI): Gives a defined window to establish flame before lockout.
- Potted Design: Encapsulated for enhanced protection against moisture, vibration, and harsh environments.
- Single Try Ignition: Designed for one ignition trial per call for heat, simplifying control logic and reliability.
- LED Diagnostics: On-board indicators help troubleshoot ignition faults for faster service calls.






