
Lochinvar & A.O. Smith 100276784 Board
As a seasoned technician, you know that the Lochinvar & A.O. Smith 100276784 Integrated Control Board is the primary intelligence behind high-efficiency gas water heaters and hydronic heating systems. This OEM circuit board replacement is designed to manage critical parameters including ignition control, flame sensing, and temperature regulation to ensure peak operational safety and fuel economy. Engineered for seamless integration, this digital control module eliminates wiring complexity by consolidating various safety limits and inducer motor functions into a single interface. Whether you are troubleshooting a furnace control board issue or performing a full system overhaul, the 100276784 provides reliable microprocessor-based logic that monitors for faults and optimizes the combustion cycle. This board is essential for maintaining the HVAC system reliability expected in commercial and residential hydronic applications. By replacing a failing unit with this authentic part, you restore the precise safety operations and energy-efficient performance required for modern high-output water heating systems.
Key Benefits:
- Precise Ignition Management: Coordinates the ignition sequence and gas valve timing for consistent, safe startups.
- Advanced Diagnostics: On-board LED and microprocessor logic help identify fault codes quickly, reducing downtime on the job site.
- OEM Compatibility: Designed specifically for Lochinvar and A.O. Smith units to ensure correct fit and electrical communication.
- Integrated Safety Protocols: Continually monitors flame signals and temperature limits to prevent overheating or hazardous conditions.
- Efficient Energy Use: Optimizes component cycles to maximize the performance of gas water heaters and boilers.
Common Questions:
How do I verify if the 100276784 board is faulty?
Technicians should first check for incoming 120 VAC power and stable low-voltage signals. If the diagnostic LED remains dark despite proper voltage, or if the board fails to send voltage to the gas valve or inducer during a call for heat, the integrated control likely requires replacement.
Is this board compatible with both Lochinvar and A.O. Smith models?
Yes, this is an OEM part used across several brands under the A.O. Smith umbrella, including many Lochinvar hydronic and power-vented water heater series. Always verify the part number on your existing board's label prior to installation.
Does this control board require specialized tools for installation?
Standard HVAC hand tools and a multimeter are typically sufficient. However, ensure you have a non-contact voltage tester to confirm the power is fully disconnected before handling the sensitive electronic components.
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: $840.31
-65%$840.31
$294.11Lochinvar & A.O. Smith 100276784 Board
As a seasoned technician, you know that the Lochinvar & A.O. Smith 100276784 Integrated Control Board is the primary intelligence behind high-efficiency gas water heaters and hydronic heating systems. This OEM circuit board replacement is designed to manage critical parameters including ignition control, flame sensing, and temperature regulation to ensure peak operational safety and fuel economy. Engineered for seamless integration, this digital control module eliminates wiring complexity by consolidating various safety limits and inducer motor functions into a single interface. Whether you are troubleshooting a furnace control board issue or performing a full system overhaul, the 100276784 provides reliable microprocessor-based logic that monitors for faults and optimizes the combustion cycle. This board is essential for maintaining the HVAC system reliability expected in commercial and residential hydronic applications. By replacing a failing unit with this authentic part, you restore the precise safety operations and energy-efficient performance required for modern high-output water heating systems.
Key Benefits:
- Precise Ignition Management: Coordinates the ignition sequence and gas valve timing for consistent, safe startups.
- Advanced Diagnostics: On-board LED and microprocessor logic help identify fault codes quickly, reducing downtime on the job site.
- OEM Compatibility: Designed specifically for Lochinvar and A.O. Smith units to ensure correct fit and electrical communication.
- Integrated Safety Protocols: Continually monitors flame signals and temperature limits to prevent overheating or hazardous conditions.
- Efficient Energy Use: Optimizes component cycles to maximize the performance of gas water heaters and boilers.
Common Questions:
How do I verify if the 100276784 board is faulty?
Technicians should first check for incoming 120 VAC power and stable low-voltage signals. If the diagnostic LED remains dark despite proper voltage, or if the board fails to send voltage to the gas valve or inducer during a call for heat, the integrated control likely requires replacement.
Is this board compatible with both Lochinvar and A.O. Smith models?
Yes, this is an OEM part used across several brands under the A.O. Smith umbrella, including many Lochinvar hydronic and power-vented water heater series. Always verify the part number on your existing board's label prior to installation.
Does this control board require specialized tools for installation?
Standard HVAC hand tools and a multimeter are typically sufficient. However, ensure you have a non-contact voltage tester to confirm the power is fully disconnected before handling the sensitive electronic components.
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
As a seasoned technician, you know that the Lochinvar & A.O. Smith 100276784 Integrated Control Board is the primary intelligence behind high-efficiency gas water heaters and hydronic heating systems. This OEM circuit board replacement is designed to manage critical parameters including ignition control, flame sensing, and temperature regulation to ensure peak operational safety and fuel economy. Engineered for seamless integration, this digital control module eliminates wiring complexity by consolidating various safety limits and inducer motor functions into a single interface. Whether you are troubleshooting a furnace control board issue or performing a full system overhaul, the 100276784 provides reliable microprocessor-based logic that monitors for faults and optimizes the combustion cycle. This board is essential for maintaining the HVAC system reliability expected in commercial and residential hydronic applications. By replacing a failing unit with this authentic part, you restore the precise safety operations and energy-efficient performance required for modern high-output water heating systems.
Key Benefits:
- Precise Ignition Management: Coordinates the ignition sequence and gas valve timing for consistent, safe startups.
- Advanced Diagnostics: On-board LED and microprocessor logic help identify fault codes quickly, reducing downtime on the job site.
- OEM Compatibility: Designed specifically for Lochinvar and A.O. Smith units to ensure correct fit and electrical communication.
- Integrated Safety Protocols: Continually monitors flame signals and temperature limits to prevent overheating or hazardous conditions.
- Efficient Energy Use: Optimizes component cycles to maximize the performance of gas water heaters and boilers.
Common Questions:
How do I verify if the 100276784 board is faulty?
Technicians should first check for incoming 120 VAC power and stable low-voltage signals. If the diagnostic LED remains dark despite proper voltage, or if the board fails to send voltage to the gas valve or inducer during a call for heat, the integrated control likely requires replacement.
Is this board compatible with both Lochinvar and A.O. Smith models?
Yes, this is an OEM part used across several brands under the A.O. Smith umbrella, including many Lochinvar hydronic and power-vented water heater series. Always verify the part number on your existing board's label prior to installation.
Does this control board require specialized tools for installation?
Standard HVAC hand tools and a multimeter are typically sufficient. However, ensure you have a non-contact voltage tester to confirm the power is fully disconnected before handling the sensitive electronic components.
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.












