Fenwal 35-63J101-011 Control

The Fenwal 35-63J101-011 is a 24VAC Microprocessed Gas Ignition Control designed for Direct Spark Ignition (DSI) systems. This Fenwal ignition module serves as a reliable Johnson Controls replacement, specifically engineered for commercial and residential heating equipment. It features a 15-second pre-purge period and a 10-second trial for ignition (TFI) to ensure safe combustion cycles. Operating at a 50/60Hz frequency, it manages the gas valve and high-voltage spark induction with precision. This HVAC direct spark control utilizes a microprocessor-based design to provide consistent flame sensing via the flame rectification circuit. Contractors will find the multi-pin connector configuration allows for streamlined integration during field replacements. The unit is encapsulated for thermal stability and vibration resistance, maintaining operational integrity in demanding mechanical environments. For technicians troubleshooting intermittent ignition issues, this module provides the diagnostic reliability required for high-uptime HVACR applications.

• Universal Compatibility: Engineered as a direct drop-in replacement for specific Johnson Controls and Fenwal legacy series.
• Enhanced Safety Logic: Features a dedicated 15-second pre-purge to clear the combustion chamber prior to the spark sequence.
• Robust Construction: The board is protected against moisture and debris, ensuring longevity in rooftop units and furnaces.
• Precise Timing: Microprocessor control eliminates the timing drift associated with older analog ignition components.
• System Diagnostics: Optimized for high-sensitivity flame sensing to prevent nuisance lockouts and service callbacks.

Is the Fenwal 35-63J101-011 compatible with 120V gas valves?
No, this control is designed specifically for 24VAC circuits. Using this module with 120V components will cause immediate failure of the internal circuitry.

How does this module handle a failed ignition attempt?
This specific model is configured for a single trial for ignition. If flame rectification is not sensed within the 10-second TFI, the system will enter a lockout state for safety.

Does this unit require a separate flame sensor?
It can be utilized in both local (single rod) and remote (dual rod) sensing applications depending on the burner assembly configuration.

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.