Fenwal 35-665576-111 Ignition Module
The Fenwal 35-665576-111 is a microprocessor-based 120V HSI Control engineered for high-reliability performance in residential furnaces, hydronic boilers, and commercial water heaters. This hot surface ignition module features a 20-second heat-up time and a 4-second trial for ignition (TFI) period, ensuring precise sequencing for gas-fired heating equipment. As an OEM-grade replacement, it provides robust flame sensing using Detect-A-Flame technology, maintaining safe combustion by continuously monitoring the pressure switch and burner flame. The circuit design incorporates an integrated combustion blower relay with a 15-second pre-purge and a 30-second post-purge cycle to clear the combustion chamber effectively. Designed for professional contractors, this Fenwal ignition board includes on-board LED diagnostics to streamline troubleshooting on the job site. The 35-665576-111 module is not position-sensitive, allowing for flexible vertical or horizontal mounting in space-constrained cabinets while providing superior electrical noise immunity and vibration resistance for long-term operational stability.
Key Benefits:- Enhanced Ignition Reliability: Features a dedicated 20-second heat-up cycle and 3 TFI attempts to prevent nuisance lockouts in cold-start conditions.
- Advanced Diagnostics: The integrated system LED identifies airflow faults, flame failures, and internal circuit errors for rapid field repairs.
- Safety Monitoring: Provides full-time flame sensing and pressure switch supervision, ensuring the gas valve only energizes under verified safe conditions.
- Universal Mounting: A compact design that is not position-sensitive, simplifying installation in various gas-fired HVAC systems.
- What do the LED flash codes mean? A steady ON light usually indicates internal failure, while specific flashes correspond to airflow faults (1 flash), false flame signals (2 flashes), or ignition lockout (3 flashes).
- Can this replace a 24V ignitor module? No, this specific model is a 120V ignition control. Always verify the line voltage of your hot surface ignitor before installation.
- How do I reset the module after a lockout? Recovery typically requires a manual reset by cycling the thermostat call for heat or removing 24V power for 5 seconds.
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 35-665576-111 Ignition Module
The Fenwal 35-665576-111 is a microprocessor-based 120V HSI Control engineered for high-reliability performance in residential furnaces, hydronic boilers, and commercial water heaters. This hot surface ignition module features a 20-second heat-up time and a 4-second trial for ignition (TFI) period, ensuring precise sequencing for gas-fired heating equipment. As an OEM-grade replacement, it provides robust flame sensing using Detect-A-Flame technology, maintaining safe combustion by continuously monitoring the pressure switch and burner flame. The circuit design incorporates an integrated combustion blower relay with a 15-second pre-purge and a 30-second post-purge cycle to clear the combustion chamber effectively. Designed for professional contractors, this Fenwal ignition board includes on-board LED diagnostics to streamline troubleshooting on the job site. The 35-665576-111 module is not position-sensitive, allowing for flexible vertical or horizontal mounting in space-constrained cabinets while providing superior electrical noise immunity and vibration resistance for long-term operational stability.
Key Benefits:- Enhanced Ignition Reliability: Features a dedicated 20-second heat-up cycle and 3 TFI attempts to prevent nuisance lockouts in cold-start conditions.
- Advanced Diagnostics: The integrated system LED identifies airflow faults, flame failures, and internal circuit errors for rapid field repairs.
- Safety Monitoring: Provides full-time flame sensing and pressure switch supervision, ensuring the gas valve only energizes under verified safe conditions.
- Universal Mounting: A compact design that is not position-sensitive, simplifying installation in various gas-fired HVAC systems.
- What do the LED flash codes mean? A steady ON light usually indicates internal failure, while specific flashes correspond to airflow faults (1 flash), false flame signals (2 flashes), or ignition lockout (3 flashes).
- Can this replace a 24V ignitor module? No, this specific model is a 120V ignition control. Always verify the line voltage of your hot surface ignitor before installation.
- How do I reset the module after a lockout? Recovery typically requires a manual reset by cycling the thermostat call for heat or removing 24V power for 5 seconds.
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
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Shipping & Returns
Description
The Fenwal 35-665576-111 is a microprocessor-based 120V HSI Control engineered for high-reliability performance in residential furnaces, hydronic boilers, and commercial water heaters. This hot surface ignition module features a 20-second heat-up time and a 4-second trial for ignition (TFI) period, ensuring precise sequencing for gas-fired heating equipment. As an OEM-grade replacement, it provides robust flame sensing using Detect-A-Flame technology, maintaining safe combustion by continuously monitoring the pressure switch and burner flame. The circuit design incorporates an integrated combustion blower relay with a 15-second pre-purge and a 30-second post-purge cycle to clear the combustion chamber effectively. Designed for professional contractors, this Fenwal ignition board includes on-board LED diagnostics to streamline troubleshooting on the job site. The 35-665576-111 module is not position-sensitive, allowing for flexible vertical or horizontal mounting in space-constrained cabinets while providing superior electrical noise immunity and vibration resistance for long-term operational stability.
Key Benefits:- Enhanced Ignition Reliability: Features a dedicated 20-second heat-up cycle and 3 TFI attempts to prevent nuisance lockouts in cold-start conditions.
- Advanced Diagnostics: The integrated system LED identifies airflow faults, flame failures, and internal circuit errors for rapid field repairs.
- Safety Monitoring: Provides full-time flame sensing and pressure switch supervision, ensuring the gas valve only energizes under verified safe conditions.
- Universal Mounting: A compact design that is not position-sensitive, simplifying installation in various gas-fired HVAC systems.
- What do the LED flash codes mean? A steady ON light usually indicates internal failure, while specific flashes correspond to airflow faults (1 flash), false flame signals (2 flashes), or ignition lockout (3 flashes).
- Can this replace a 24V ignitor module? No, this specific model is a 120V ignition control. Always verify the line voltage of your hot surface ignitor before installation.
- How do I reset the module after a lockout? Recovery typically requires a manual reset by cycling the thermostat call for heat or removing 24V power for 5 seconds.
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.
