Fenwal 35-725915-997 Control
The Fenwal 35-725915-997 is a high-performance, microprocessor-based 120 VAC direct spark ignition (DSI) control engineered for precision in gas-fired heating systems. Designed for industrial and commercial applications, this Fenwal ignition control board manages the gas valve and ignition sequence for both natural and LP gas. Utilizing local flame sensing technology, the module monitors flame rectification directly through the spark electrode, eliminating the need for a separate remote sensor and simplifying your wiring harness. The on-board microprocessor ensures repeatable ignition timing and purge sequences, providing stable performance even in demanding environments. With its line polarity insensitive design, this control reduces the risk of miswiring during field replacements. Technicians can rely on the integrated diagnostic LED for rapid troubleshooting, as it provides clear flash codes for internal hardware checks, flame failures, and lockout conditions.
Key Benefits:- Versatile Mounting: Available in open board or potted configurations to protect against high vibration and moisture in washdown environments.
- Advanced Diagnostics: Built-in diagnostic LED and flame current test pins allow for proactive maintenance and immediate fault identification.
- Reliable Ignition: Features a 15-second Trial for Ignition (TFI) and microprocessor-controlled pre-purge for safe, consistent burner light-off.
- Streamlined Installation: Multi-pin connectors and local sense circuitry reduce labor time and component count on the job site.
How do I reset the control after a lockout?
The Fenwal 35-725915-997 requires a manual reset by cycling the 120 VAC power or adjusting the thermostat setting. On specific models with automatic reset, the system will attempt another ignition sequence after a one-hour delay.
Can I measure the flame signal on this board?
Yes, technicians can measure the flame current by connecting a DC micro-ammeter to the FC+ and FC- test terminals. A minimum reading of 1.0 µA is required for stable operation.
What does it mean if the LED is flashing?
The LED provides specific fault codes, such as internal circuit failure, airflow issues, or flame sense errors. Always refer to the technical data sheet for the specific flash pattern definitions.
This item is not eligible for free shipping.
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.
Fenwal 35-725915-997 Control
The Fenwal 35-725915-997 is a high-performance, microprocessor-based 120 VAC direct spark ignition (DSI) control engineered for precision in gas-fired heating systems. Designed for industrial and commercial applications, this Fenwal ignition control board manages the gas valve and ignition sequence for both natural and LP gas. Utilizing local flame sensing technology, the module monitors flame rectification directly through the spark electrode, eliminating the need for a separate remote sensor and simplifying your wiring harness. The on-board microprocessor ensures repeatable ignition timing and purge sequences, providing stable performance even in demanding environments. With its line polarity insensitive design, this control reduces the risk of miswiring during field replacements. Technicians can rely on the integrated diagnostic LED for rapid troubleshooting, as it provides clear flash codes for internal hardware checks, flame failures, and lockout conditions.
Key Benefits:- Versatile Mounting: Available in open board or potted configurations to protect against high vibration and moisture in washdown environments.
- Advanced Diagnostics: Built-in diagnostic LED and flame current test pins allow for proactive maintenance and immediate fault identification.
- Reliable Ignition: Features a 15-second Trial for Ignition (TFI) and microprocessor-controlled pre-purge for safe, consistent burner light-off.
- Streamlined Installation: Multi-pin connectors and local sense circuitry reduce labor time and component count on the job site.
How do I reset the control after a lockout?
The Fenwal 35-725915-997 requires a manual reset by cycling the 120 VAC power or adjusting the thermostat setting. On specific models with automatic reset, the system will attempt another ignition sequence after a one-hour delay.
Can I measure the flame signal on this board?
Yes, technicians can measure the flame current by connecting a DC micro-ammeter to the FC+ and FC- test terminals. A minimum reading of 1.0 µA is required for stable operation.
What does it mean if the LED is flashing?
The LED provides specific fault codes, such as internal circuit failure, airflow issues, or flame sense errors. Always refer to the technical data sheet for the specific flash pattern definitions.
This item is not eligible for free shipping.
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.
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Description
The Fenwal 35-725915-997 is a high-performance, microprocessor-based 120 VAC direct spark ignition (DSI) control engineered for precision in gas-fired heating systems. Designed for industrial and commercial applications, this Fenwal ignition control board manages the gas valve and ignition sequence for both natural and LP gas. Utilizing local flame sensing technology, the module monitors flame rectification directly through the spark electrode, eliminating the need for a separate remote sensor and simplifying your wiring harness. The on-board microprocessor ensures repeatable ignition timing and purge sequences, providing stable performance even in demanding environments. With its line polarity insensitive design, this control reduces the risk of miswiring during field replacements. Technicians can rely on the integrated diagnostic LED for rapid troubleshooting, as it provides clear flash codes for internal hardware checks, flame failures, and lockout conditions.
Key Benefits:- Versatile Mounting: Available in open board or potted configurations to protect against high vibration and moisture in washdown environments.
- Advanced Diagnostics: Built-in diagnostic LED and flame current test pins allow for proactive maintenance and immediate fault identification.
- Reliable Ignition: Features a 15-second Trial for Ignition (TFI) and microprocessor-controlled pre-purge for safe, consistent burner light-off.
- Streamlined Installation: Multi-pin connectors and local sense circuitry reduce labor time and component count on the job site.
How do I reset the control after a lockout?
The Fenwal 35-725915-997 requires a manual reset by cycling the 120 VAC power or adjusting the thermostat setting. On specific models with automatic reset, the system will attempt another ignition sequence after a one-hour delay.
Can I measure the flame signal on this board?
Yes, technicians can measure the flame current by connecting a DC micro-ammeter to the FC+ and FC- test terminals. A minimum reading of 1.0 µA is required for stable operation.
What does it mean if the LED is flashing?
The LED provides specific fault codes, such as internal circuit failure, airflow issues, or flame sense errors. Always refer to the technical data sheet for the specific flash pattern definitions.
This item is not eligible for free shipping.
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.
