Lochinvar & A.O. Smith 100074451 PCB
The Lochinvar & A.O. Smith 100074451 PCB is a critical integrated control module designed for high-efficiency commercial and residential water heaters and boilers. Known as the MC50 PCB, this genuine OEM component manages vital system operations including ignition sequences, temperature regulation, and safety circuit monitoring. Engineered for a precise fit in Lochinvar Knight and various A.O. Smith tankless models, it ensures absolute signal integrity and consistent communication between the SMART SYSTEM interface and hardware sensors. This board maintains system uptime by providing stable 24V power distribution from the transformer to the burner assembly. For technicians, the 100074451 is the standard replacement to resolve erratic error codes, intermittent flame failure, or communication lost status on the digital display. Built with industrial-grade conductive traces, it resists thermal stress in demanding HVACR environments, ensuring the longevity of the heating appliance through superior microprocessor-based control.
Key Benefits- OEM Compatibility: Specifically calibrated for Lochinvar and A.O. Smith commercial systems, ensuring immediate restoration of factory specs.
- Precision Control: High-accuracy temperature sensor monitoring prevents overheating and optimizes fuel efficiency.
- Integrated Safety: Rapidly terminates the gas valve circuit if sensors detect an unsafe flue temperature or blocked vent condition.
- Durable Construction: Heavy-duty substrate designed to withstand the high ambient temperatures found in mechanical rooms.
What are the signs that my 100074451 PCB needs replacement?
Common indicators include a blank user interface, failure to initiate the hot surface igniter, or persistent "Control Board Failure" alerts that do not clear after a power cycle.
Can I swap this with a universal control board?
No. The MC50 PCB utilizes specific firmware for Lochinvar SMART SYSTEM architectures. Using a non-OEM part will likely cause compatibility issues and compromise safety protocols.
Is firmware programming required for the Lochinvar 100074451?
This board generally arrives pre-loaded with standard operating parameters, though certain high-end Knight boiler models may require configuration through the SMART SYSTEM menu to match specific BTU ratings.
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: $303.76
-65%$303.76
$106.32Lochinvar & A.O. Smith 100074451 PCB
The Lochinvar & A.O. Smith 100074451 PCB is a critical integrated control module designed for high-efficiency commercial and residential water heaters and boilers. Known as the MC50 PCB, this genuine OEM component manages vital system operations including ignition sequences, temperature regulation, and safety circuit monitoring. Engineered for a precise fit in Lochinvar Knight and various A.O. Smith tankless models, it ensures absolute signal integrity and consistent communication between the SMART SYSTEM interface and hardware sensors. This board maintains system uptime by providing stable 24V power distribution from the transformer to the burner assembly. For technicians, the 100074451 is the standard replacement to resolve erratic error codes, intermittent flame failure, or communication lost status on the digital display. Built with industrial-grade conductive traces, it resists thermal stress in demanding HVACR environments, ensuring the longevity of the heating appliance through superior microprocessor-based control.
Key Benefits- OEM Compatibility: Specifically calibrated for Lochinvar and A.O. Smith commercial systems, ensuring immediate restoration of factory specs.
- Precision Control: High-accuracy temperature sensor monitoring prevents overheating and optimizes fuel efficiency.
- Integrated Safety: Rapidly terminates the gas valve circuit if sensors detect an unsafe flue temperature or blocked vent condition.
- Durable Construction: Heavy-duty substrate designed to withstand the high ambient temperatures found in mechanical rooms.
What are the signs that my 100074451 PCB needs replacement?
Common indicators include a blank user interface, failure to initiate the hot surface igniter, or persistent "Control Board Failure" alerts that do not clear after a power cycle.
Can I swap this with a universal control board?
No. The MC50 PCB utilizes specific firmware for Lochinvar SMART SYSTEM architectures. Using a non-OEM part will likely cause compatibility issues and compromise safety protocols.
Is firmware programming required for the Lochinvar 100074451?
This board generally arrives pre-loaded with standard operating parameters, though certain high-end Knight boiler models may require configuration through the SMART SYSTEM menu to match specific BTU ratings.
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.
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Description
The Lochinvar & A.O. Smith 100074451 PCB is a critical integrated control module designed for high-efficiency commercial and residential water heaters and boilers. Known as the MC50 PCB, this genuine OEM component manages vital system operations including ignition sequences, temperature regulation, and safety circuit monitoring. Engineered for a precise fit in Lochinvar Knight and various A.O. Smith tankless models, it ensures absolute signal integrity and consistent communication between the SMART SYSTEM interface and hardware sensors. This board maintains system uptime by providing stable 24V power distribution from the transformer to the burner assembly. For technicians, the 100074451 is the standard replacement to resolve erratic error codes, intermittent flame failure, or communication lost status on the digital display. Built with industrial-grade conductive traces, it resists thermal stress in demanding HVACR environments, ensuring the longevity of the heating appliance through superior microprocessor-based control.
Key Benefits- OEM Compatibility: Specifically calibrated for Lochinvar and A.O. Smith commercial systems, ensuring immediate restoration of factory specs.
- Precision Control: High-accuracy temperature sensor monitoring prevents overheating and optimizes fuel efficiency.
- Integrated Safety: Rapidly terminates the gas valve circuit if sensors detect an unsafe flue temperature or blocked vent condition.
- Durable Construction: Heavy-duty substrate designed to withstand the high ambient temperatures found in mechanical rooms.
What are the signs that my 100074451 PCB needs replacement?
Common indicators include a blank user interface, failure to initiate the hot surface igniter, or persistent "Control Board Failure" alerts that do not clear after a power cycle.
Can I swap this with a universal control board?
No. The MC50 PCB utilizes specific firmware for Lochinvar SMART SYSTEM architectures. Using a non-OEM part will likely cause compatibility issues and compromise safety protocols.
Is firmware programming required for the Lochinvar 100074451?
This board generally arrives pre-loaded with standard operating parameters, though certain high-end Knight boiler models may require configuration through the SMART SYSTEM menu to match specific BTU ratings.
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.
