Fenwal 35-605601-007 Control

The Fenwal 35-605601-007 is a high-performance 24V Direct Spark Ignition (DSI) control module engineered for precise burner sequencing in commercial and residential gas-fired heating systems. This microprocessor-based ignition control is designed with no pre-purge (0-second) and a 15-second trial for ignition (TFI), making it a reliable solution for applications requiring immediate ignition and robust flame supervision. Utilizing Detect-A-Flame technology, the module provides accurate flame sensing and on-board LED diagnostics to streamline troubleshooting in the field.

As a veteran-grade HVAC replacement part, the 35-605601-007 supports both local and remote flame sensing configurations and is housed in a durable Noryl gray enclosure. Its conformal coating ensures protection against harsh environmental conditions, while the single try for ignition logic provides a safe operating sequence by locking out the system if a flame is not established within the designated 15-second window. Whether used in boilers, water heaters, or furnaces, this Fenwal ignition module ensures repeatable timing and stable flame current across varying heat cycles.

• 24V Direct Spark Ignition (DSI) for efficient, pilot-free burner operation.
• 0-Second Pre-Purge and 15-Second TFI designed for specific gas appliance timing requirements.
• On-Board LED Diagnostics allow for rapid identification of system faults and status.
• Detect-A-Flame Technology provides specialized flame supervision to prevent unsafe operation.
• Rugged Enclosure and conformal coating protect internal electronics from moisture and extreme temperatures.

How do you troubleshoot a Fenwal 35-60 series module using the LED diagnostics?
The integrated LED flashes specific codes to indicate faults such as no flame signal, internal hardware failure, or airflow issues (if connected to a blower relay). Refer to the terminal diagram to match the flash pattern to the corresponding troubleshooting step.

What is the minimum flame current required for the Fenwal 35-605601-007?
For reliable flame monitoring, the system requires a minimum flame current of 0.7 microamps. Technicians should use a DC microammeter connected to the FC+ and FC- test pins to verify the signal strength during the trial for ignition.

Can this control be used for both Natural Gas and LP applications?
Yes, this Fenwal DSI control is compatible with Natural, LP, and manufactured gases, provided the appliance is configured and grounded correctly to ensure proper flame rectification.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.