Fenwal 35-665904-225 Ignition Control
The Fenwal 35-665904-225 Auto Ignition Control is a microprocessor-based 24 VAC Hot Surface Ignition (HSI) module engineered for precise burner sequence management in gas-fired appliances. This multi-try ignition control features a 30-second pre-purge and a 10-second trial for ignition (TFI), ensuring optimal combustion conditions before gas valve actuation. Built for versatile field applications, it supports 120/240 VAC field-selectable line voltage for the ignitor, allowing for seamless integration with both 120 VAC and 240 VAC hot surface elements. The integration of DETECT-A-FLAME technology provides full-time flame sensing with a 0.7 µA minimum sensitivity, while the diagnostic LED delivers immediate feedback on system status, including airflow faults and ignition lockout. Designed for high-reliability environments, the 35-66 series monitors the inducer blower and pressure switch circuit, providing a fail-safe gas valve control and automatic reset options for consistent thermal performance.
Key Benefits:
- Microprocessor Control: Features repeatable timing for pre-purge, inter-purge, and post-purge sequences to maximize appliance efficiency.
- Advanced Troubleshooting: On-board diagnostic LED simplifies field service by identifying specific fault codes like pressure switch failure or flame loss.
- Wide Compatibility: Designed for use with natural gas, LP, and manufactured gases in boilers, furnaces, and commercial cooking equipment.
- Robust Flame Sensing: Local or remote sensing capabilities with dedicated flame current test pins for accurate DC microamp readings during startup.
- Installation Versatility: Non-position sensitive mounting with a compact footprint, suitable for standard electrical junction boxes or direct panel attachment.
Common Questions:
- How do I resolve an ignition lockout on the 35-66 series? Reset the module by cycling the 24 VAC thermostat call or removing power for 5 seconds. If the unit has the one-hour automatic reset feature, it will attempt a new sequence after the delay.
- Can this module replace 120 VAC ignitor controls? Yes, the Fenwal 35-665904-225 features field-selectable line voltage specifically to power 120 VAC or 240 VAC ignitors while using a 24 VAC control circuit.
- What does a steady LED light indicate? A steady-on LED typically signals an internal hardware or software fault, requiring a power reset or module replacement if the condition persists.
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 35-665904-225 Ignition Control
The Fenwal 35-665904-225 Auto Ignition Control is a microprocessor-based 24 VAC Hot Surface Ignition (HSI) module engineered for precise burner sequence management in gas-fired appliances. This multi-try ignition control features a 30-second pre-purge and a 10-second trial for ignition (TFI), ensuring optimal combustion conditions before gas valve actuation. Built for versatile field applications, it supports 120/240 VAC field-selectable line voltage for the ignitor, allowing for seamless integration with both 120 VAC and 240 VAC hot surface elements. The integration of DETECT-A-FLAME technology provides full-time flame sensing with a 0.7 µA minimum sensitivity, while the diagnostic LED delivers immediate feedback on system status, including airflow faults and ignition lockout. Designed for high-reliability environments, the 35-66 series monitors the inducer blower and pressure switch circuit, providing a fail-safe gas valve control and automatic reset options for consistent thermal performance.
Key Benefits:
- Microprocessor Control: Features repeatable timing for pre-purge, inter-purge, and post-purge sequences to maximize appliance efficiency.
- Advanced Troubleshooting: On-board diagnostic LED simplifies field service by identifying specific fault codes like pressure switch failure or flame loss.
- Wide Compatibility: Designed for use with natural gas, LP, and manufactured gases in boilers, furnaces, and commercial cooking equipment.
- Robust Flame Sensing: Local or remote sensing capabilities with dedicated flame current test pins for accurate DC microamp readings during startup.
- Installation Versatility: Non-position sensitive mounting with a compact footprint, suitable for standard electrical junction boxes or direct panel attachment.
Common Questions:
- How do I resolve an ignition lockout on the 35-66 series? Reset the module by cycling the 24 VAC thermostat call or removing power for 5 seconds. If the unit has the one-hour automatic reset feature, it will attempt a new sequence after the delay.
- Can this module replace 120 VAC ignitor controls? Yes, the Fenwal 35-665904-225 features field-selectable line voltage specifically to power 120 VAC or 240 VAC ignitors while using a 24 VAC control circuit.
- What does a steady LED light indicate? A steady-on LED typically signals an internal hardware or software fault, requiring a power reset or module replacement if the condition persists.
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
Shipping & Returns
Shipping & Returns
Description
The Fenwal 35-665904-225 Auto Ignition Control is a microprocessor-based 24 VAC Hot Surface Ignition (HSI) module engineered for precise burner sequence management in gas-fired appliances. This multi-try ignition control features a 30-second pre-purge and a 10-second trial for ignition (TFI), ensuring optimal combustion conditions before gas valve actuation. Built for versatile field applications, it supports 120/240 VAC field-selectable line voltage for the ignitor, allowing for seamless integration with both 120 VAC and 240 VAC hot surface elements. The integration of DETECT-A-FLAME technology provides full-time flame sensing with a 0.7 µA minimum sensitivity, while the diagnostic LED delivers immediate feedback on system status, including airflow faults and ignition lockout. Designed for high-reliability environments, the 35-66 series monitors the inducer blower and pressure switch circuit, providing a fail-safe gas valve control and automatic reset options for consistent thermal performance.
Key Benefits:
- Microprocessor Control: Features repeatable timing for pre-purge, inter-purge, and post-purge sequences to maximize appliance efficiency.
- Advanced Troubleshooting: On-board diagnostic LED simplifies field service by identifying specific fault codes like pressure switch failure or flame loss.
- Wide Compatibility: Designed for use with natural gas, LP, and manufactured gases in boilers, furnaces, and commercial cooking equipment.
- Robust Flame Sensing: Local or remote sensing capabilities with dedicated flame current test pins for accurate DC microamp readings during startup.
- Installation Versatility: Non-position sensitive mounting with a compact footprint, suitable for standard electrical junction boxes or direct panel attachment.
Common Questions:
- How do I resolve an ignition lockout on the 35-66 series? Reset the module by cycling the 24 VAC thermostat call or removing power for 5 seconds. If the unit has the one-hour automatic reset feature, it will attempt a new sequence after the delay.
- Can this module replace 120 VAC ignitor controls? Yes, the Fenwal 35-665904-225 features field-selectable line voltage specifically to power 120 VAC or 240 VAC ignitors while using a 24 VAC control circuit.
- What does a steady LED light indicate? A steady-on LED typically signals an internal hardware or software fault, requiring a power reset or module replacement if the condition persists.
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.
