Fenwal 35-615942-901 Ignition Module

The Fenwal 35-615942-901 Ignition Module is a high-performance 24V microprocessor-based Direct Spark Ignition (DSI) control engineered for precision in demanding HVACR environments. This gas ignition control module is designed for compatibility with natural, manufactured, and propane gas systems, making it a versatile choice for commercial cooking equipment, boilers, and water heaters. As a Fenwal DSI control, it utilizes advanced integrated LED diagnostics to provide real-time status updates, significantly reducing troubleshooting time for technicians in the field. The 35-615942-901 features a robust design that monitors pressure switch contacts and combustion blower operation to ensure safe burner sequences. With multiple ignition tries and an automatic one-hour reset after lockout, this 24V ignition module maintains system uptime while prioritizing combustion safety. Its wide operating temperature range of -40°F to 176°F ensures reliable direct spark ignition performance in varied mechanical room conditions.

• Enhanced Troubleshooting: The 35-series LED ignition diagnostics quickly identify system faults such as flame loss or pressure switch failure.
• Flexible Flame Sensing: Supports both local and remote flame sensing configurations with dedicated test pins for signal strength verification.
• Systems Integration: Includes an alarm output with normally closed contacts for remote monitoring and BAS integration.
• Universal Fuel Compatibility: Rated for use with Natural, LP, and Manufactured gases without requiring hardware modifications.
• Automated Recovery: Features a 60-minute automatic reset function to restore heating operations without manual intervention after a temporary lockout.

What does the LED flash code indicate on the Fenwal 35-615942-901?
The integrated LED provides specific pulse patterns to diagnose internal circuit failure, pressure switch stuck open/closed, or flame signal loss during the ignition trial.

Can this module replace 120V ignition systems?
No, this is a dedicated 24V AC ignition control. Using 120V input will result in immediate catastrophic failure of the microprocessor. Always verify your transformer output before installation.

How do I test the flame current on this DSI module?
Technicians can measure the DC microamp signal through the built-in flame sense test pins. A minimum reading of 0.7 microamps is required for stable flame detection.

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.