
Lochinvar & A.O. Smith 100189283 Control
The Lochinvar & A.O. Smith 100189283 Control (Integrated FTX725) is a critical OEM boiler control board designed for high-efficiency commercial hydronic systems. This integrated furnace control manages critical combustion sequences, including the hot surface igniter timing, blower speeds, and gas valve modulation. Engineered specifically for the Lochinvar Knight and high-output A.O. Smith series, it serves as a direct replacement for legacy part numbers such as RLY30058. As a technician, you know that precise voltage regulation and signaling between the SIT flame sensor and the main processor are vital for preventing nuisance lockouts and maintaining efficient thermal cycling. This board utilizes high-grade semiconductors to resist heat-induced fatigue, ensuring stable communication with the user interface and manifold sensors. For contractors performing a boiler control board replacement, this unit ensures backward compatibility with existing wiring harnesses, simplifying field installation and HVAC system troubleshooting while restoring factory-spec modulation curves and safety parameters.
Key Performance Benefits:
- Direct OEM Compatibility: Precise fit for Lochinvar FTX725 models, ensuring no mismatch in sensor resistance or relay pinouts.
- Advanced Combustion Logic: Optimized boiler control wiring architecture for consistent ignition cycles and flame rectification stability.
- Robust Build Quality: Industrial-grade PCB construction designed to withstand the high ambient temperatures found in commercial mechanical rooms.
- System Synchronization: Seamlessly manages communication between the secondary blower, pump relays, and the primary limit circuit.
Frequently Asked Questions:
How do I troubleshoot "No Flame Sense" on the 100189283 board?
First, verify the SIT AC igniter and probe for continuity. If the sensor is clean and the ground is solid, but the board fails to detect microamps, the integrated comparator on the control may be compromised, requiring a full board swap.
Is this control board compatible with older RLY30058 configurations?
Yes, the 100189283 is the current manufacturer-spec replacement for the RLY30058, maintaining identical mounting footprints and terminal designations for field efficiency.
What safety protocols does the Integrated FTX725 manage?
This board controls the HVAC control board safety loop, monitoring the high-limit switch, water flow switch, and blocked flue sensors to initiate immediate shutdown if parameters exceed safe operational limits.
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.
Original: $678.65
-65%$678.65
$237.53Lochinvar & A.O. Smith 100189283 Control
The Lochinvar & A.O. Smith 100189283 Control (Integrated FTX725) is a critical OEM boiler control board designed for high-efficiency commercial hydronic systems. This integrated furnace control manages critical combustion sequences, including the hot surface igniter timing, blower speeds, and gas valve modulation. Engineered specifically for the Lochinvar Knight and high-output A.O. Smith series, it serves as a direct replacement for legacy part numbers such as RLY30058. As a technician, you know that precise voltage regulation and signaling between the SIT flame sensor and the main processor are vital for preventing nuisance lockouts and maintaining efficient thermal cycling. This board utilizes high-grade semiconductors to resist heat-induced fatigue, ensuring stable communication with the user interface and manifold sensors. For contractors performing a boiler control board replacement, this unit ensures backward compatibility with existing wiring harnesses, simplifying field installation and HVAC system troubleshooting while restoring factory-spec modulation curves and safety parameters.
Key Performance Benefits:
- Direct OEM Compatibility: Precise fit for Lochinvar FTX725 models, ensuring no mismatch in sensor resistance or relay pinouts.
- Advanced Combustion Logic: Optimized boiler control wiring architecture for consistent ignition cycles and flame rectification stability.
- Robust Build Quality: Industrial-grade PCB construction designed to withstand the high ambient temperatures found in commercial mechanical rooms.
- System Synchronization: Seamlessly manages communication between the secondary blower, pump relays, and the primary limit circuit.
Frequently Asked Questions:
How do I troubleshoot "No Flame Sense" on the 100189283 board?
First, verify the SIT AC igniter and probe for continuity. If the sensor is clean and the ground is solid, but the board fails to detect microamps, the integrated comparator on the control may be compromised, requiring a full board swap.
Is this control board compatible with older RLY30058 configurations?
Yes, the 100189283 is the current manufacturer-spec replacement for the RLY30058, maintaining identical mounting footprints and terminal designations for field efficiency.
What safety protocols does the Integrated FTX725 manage?
This board controls the HVAC control board safety loop, monitoring the high-limit switch, water flow switch, and blocked flue sensors to initiate immediate shutdown if parameters exceed safe operational limits.
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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Lochinvar & A.O. Smith 100189283 Control (Integrated FTX725) is a critical OEM boiler control board designed for high-efficiency commercial hydronic systems. This integrated furnace control manages critical combustion sequences, including the hot surface igniter timing, blower speeds, and gas valve modulation. Engineered specifically for the Lochinvar Knight and high-output A.O. Smith series, it serves as a direct replacement for legacy part numbers such as RLY30058. As a technician, you know that precise voltage regulation and signaling between the SIT flame sensor and the main processor are vital for preventing nuisance lockouts and maintaining efficient thermal cycling. This board utilizes high-grade semiconductors to resist heat-induced fatigue, ensuring stable communication with the user interface and manifold sensors. For contractors performing a boiler control board replacement, this unit ensures backward compatibility with existing wiring harnesses, simplifying field installation and HVAC system troubleshooting while restoring factory-spec modulation curves and safety parameters.
Key Performance Benefits:
- Direct OEM Compatibility: Precise fit for Lochinvar FTX725 models, ensuring no mismatch in sensor resistance or relay pinouts.
- Advanced Combustion Logic: Optimized boiler control wiring architecture for consistent ignition cycles and flame rectification stability.
- Robust Build Quality: Industrial-grade PCB construction designed to withstand the high ambient temperatures found in commercial mechanical rooms.
- System Synchronization: Seamlessly manages communication between the secondary blower, pump relays, and the primary limit circuit.
Frequently Asked Questions:
How do I troubleshoot "No Flame Sense" on the 100189283 board?
First, verify the SIT AC igniter and probe for continuity. If the sensor is clean and the ground is solid, but the board fails to detect microamps, the integrated comparator on the control may be compromised, requiring a full board swap.
Is this control board compatible with older RLY30058 configurations?
Yes, the 100189283 is the current manufacturer-spec replacement for the RLY30058, maintaining identical mounting footprints and terminal designations for field efficiency.
What safety protocols does the Integrated FTX725 manage?
This board controls the HVAC control board safety loop, monitoring the high-limit switch, water flow switch, and blocked flue sensors to initiate immediate shutdown if parameters exceed safe operational limits.
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.












