
Fenwal 35-615937-997 Ignition Module
The Fenwal 35-615937-997 is a microprocessor-based Direct Spark Ignition (DSI) control engineered for a 24VAC input. This specific unit features an integrated OEM Captive Air inducer relay, ensuring the combustion blower establishes proper airflow before the ignition sequence initiates. Designed for rigorous HVACR environments, it offers a 60-second pre-purge and a 60-second inter-purge period to clear the combustion chamber, followed by a 15-second Trial for Ignition (TFI). The 35-61 series utilizes advanced DETECT-A-FLAME technology for precise flame sensing and includes LED diagnostics to streamline troubleshooting of airflow faults or ignition lockouts. With its rugged, conformal-coated construction, this module maintains reliable performance in temperatures ranging from -40°F to 176°F, making it a critical component for specialized commercial heating applications.
Key Benefits:- Integrated Inducer Relay: Simplifies wiring and ensures sequenced operation of the inducer blower for safe combustion.
- Diagnostic LED: Provides immediate visual feedback for troubleshooting common faults like pressure switch failures or flame loss.
- Microprocessor Control: Delivers precise timing for pre-purge and ignition sequences, enhancing system efficiency.
- Flame Current Test Pins: Allows technicians to verify signal strength (0.7µA minimum) quickly with a standard micro-ammeter.
- Rugged Design: Built to withstand commercial duty cycles and environmental extremes without nuisance tripping.
- How do I troubleshoot a 3-flash LED error on this Fenwal module? A 3-flash code typically indicates an ignition lockout. Check your gas supply, spark gap (0.125"), and high-voltage wiring for continuity issues.
- Is the 35-615937-997 compatible with remote flame sensing? Yes, this module supports both local and remote flame sensing. Ensure the remote flame sensor is properly grounded for a stable signal.
- What happens if the pressure switch doesn't close during startup? The inducer relay will energize the blower, but the microprocessor will halt the ignition sequence and signal an airflow fault if the switch remains open past the 30-second window.
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 35-615937-997 Ignition Module
The Fenwal 35-615937-997 is a microprocessor-based Direct Spark Ignition (DSI) control engineered for a 24VAC input. This specific unit features an integrated OEM Captive Air inducer relay, ensuring the combustion blower establishes proper airflow before the ignition sequence initiates. Designed for rigorous HVACR environments, it offers a 60-second pre-purge and a 60-second inter-purge period to clear the combustion chamber, followed by a 15-second Trial for Ignition (TFI). The 35-61 series utilizes advanced DETECT-A-FLAME technology for precise flame sensing and includes LED diagnostics to streamline troubleshooting of airflow faults or ignition lockouts. With its rugged, conformal-coated construction, this module maintains reliable performance in temperatures ranging from -40°F to 176°F, making it a critical component for specialized commercial heating applications.
Key Benefits:- Integrated Inducer Relay: Simplifies wiring and ensures sequenced operation of the inducer blower for safe combustion.
- Diagnostic LED: Provides immediate visual feedback for troubleshooting common faults like pressure switch failures or flame loss.
- Microprocessor Control: Delivers precise timing for pre-purge and ignition sequences, enhancing system efficiency.
- Flame Current Test Pins: Allows technicians to verify signal strength (0.7µA minimum) quickly with a standard micro-ammeter.
- Rugged Design: Built to withstand commercial duty cycles and environmental extremes without nuisance tripping.
- How do I troubleshoot a 3-flash LED error on this Fenwal module? A 3-flash code typically indicates an ignition lockout. Check your gas supply, spark gap (0.125"), and high-voltage wiring for continuity issues.
- Is the 35-615937-997 compatible with remote flame sensing? Yes, this module supports both local and remote flame sensing. Ensure the remote flame sensor is properly grounded for a stable signal.
- What happens if the pressure switch doesn't close during startup? The inducer relay will energize the blower, but the microprocessor will halt the ignition sequence and signal an airflow fault if the switch remains open past the 30-second window.
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.
Product Information
Product Information
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Shipping & Returns
Description
The Fenwal 35-615937-997 is a microprocessor-based Direct Spark Ignition (DSI) control engineered for a 24VAC input. This specific unit features an integrated OEM Captive Air inducer relay, ensuring the combustion blower establishes proper airflow before the ignition sequence initiates. Designed for rigorous HVACR environments, it offers a 60-second pre-purge and a 60-second inter-purge period to clear the combustion chamber, followed by a 15-second Trial for Ignition (TFI). The 35-61 series utilizes advanced DETECT-A-FLAME technology for precise flame sensing and includes LED diagnostics to streamline troubleshooting of airflow faults or ignition lockouts. With its rugged, conformal-coated construction, this module maintains reliable performance in temperatures ranging from -40°F to 176°F, making it a critical component for specialized commercial heating applications.
Key Benefits:- Integrated Inducer Relay: Simplifies wiring and ensures sequenced operation of the inducer blower for safe combustion.
- Diagnostic LED: Provides immediate visual feedback for troubleshooting common faults like pressure switch failures or flame loss.
- Microprocessor Control: Delivers precise timing for pre-purge and ignition sequences, enhancing system efficiency.
- Flame Current Test Pins: Allows technicians to verify signal strength (0.7µA minimum) quickly with a standard micro-ammeter.
- Rugged Design: Built to withstand commercial duty cycles and environmental extremes without nuisance tripping.
- How do I troubleshoot a 3-flash LED error on this Fenwal module? A 3-flash code typically indicates an ignition lockout. Check your gas supply, spark gap (0.125"), and high-voltage wiring for continuity issues.
- Is the 35-615937-997 compatible with remote flame sensing? Yes, this module supports both local and remote flame sensing. Ensure the remote flame sensor is properly grounded for a stable signal.
- What happens if the pressure switch doesn't close during startup? The inducer relay will energize the blower, but the microprocessor will halt the ignition sequence and signal an airflow fault if the switch remains open past the 30-second window.
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.











