
Lochinvar & A.O. Smith 100109988 Control Board
Optimizing technical performance in gas-fired commercial water heaters requires precise control over the 24V ignition sequence. The Lochinvar & A.O. Smith 100109988 Ignition Control Board is a factory-authorized OEM replacement engineered for high-recovery systems, ensuring consistent burner operation and flame sensing accuracy. As the direct updated version for the legacy 9004618005, this board integrates advanced microprocessor control logic to manage the hot surface ignition (HSI) process and monitor safety parameters through a dedicated diagnostic LED interface. By utilizing this OEM ignition module, technicians can effectively resolve B2-70 ignition failure codes and intermittent flame loss issues often encountered in heavy-duty commercial applications. Its rigid PCB design provides a stable platform for high-voltage switching and PWM signal communication, critical for maintaining the proper air-to-gas ratio and preventing nuisance shutdowns during high-demand periods.
Key Benefits:
- Seamless replacement for 9004618005, ensuring full compatibility with existing 24V control circuits.
- Integrated diagnostic LED provides real-time error reporting to streamline HVAC troubleshooting.
- Precise flame sensing technology prevents premature gas valve closure and ensures reliable burner ignition.
- Robust construction designed to withstand the thermal stress and high-cycle demands of commercial heater operation.
- Direct OEM fit eliminates the need for field modifications or bracket adjustments during installation.
Common Questions:
Does this board address the B2-70 error code?
Yes, the 100109988 is frequently used to resolve B2-70 ignition failures, especially if the internal relays or flame-sensing circuit on the original board have degraded.
What components are included in this kit?
This is the central ignition control board assembly, which typically includes the integrated relays and diagnostic indicators necessary for fire-testing and operation.
Is this compatible with both Lochinvar and A.O. Smith units?
This part is a cross-branded OEM component shared across several Lochinvar and A.O. Smith gas-fired commercial product lines. Always verify your specific model and serial number before installation.
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.
Lochinvar & A.O. Smith 100109988 Control Board
Optimizing technical performance in gas-fired commercial water heaters requires precise control over the 24V ignition sequence. The Lochinvar & A.O. Smith 100109988 Ignition Control Board is a factory-authorized OEM replacement engineered for high-recovery systems, ensuring consistent burner operation and flame sensing accuracy. As the direct updated version for the legacy 9004618005, this board integrates advanced microprocessor control logic to manage the hot surface ignition (HSI) process and monitor safety parameters through a dedicated diagnostic LED interface. By utilizing this OEM ignition module, technicians can effectively resolve B2-70 ignition failure codes and intermittent flame loss issues often encountered in heavy-duty commercial applications. Its rigid PCB design provides a stable platform for high-voltage switching and PWM signal communication, critical for maintaining the proper air-to-gas ratio and preventing nuisance shutdowns during high-demand periods.
Key Benefits:
- Seamless replacement for 9004618005, ensuring full compatibility with existing 24V control circuits.
- Integrated diagnostic LED provides real-time error reporting to streamline HVAC troubleshooting.
- Precise flame sensing technology prevents premature gas valve closure and ensures reliable burner ignition.
- Robust construction designed to withstand the thermal stress and high-cycle demands of commercial heater operation.
- Direct OEM fit eliminates the need for field modifications or bracket adjustments during installation.
Common Questions:
Does this board address the B2-70 error code?
Yes, the 100109988 is frequently used to resolve B2-70 ignition failures, especially if the internal relays or flame-sensing circuit on the original board have degraded.
What components are included in this kit?
This is the central ignition control board assembly, which typically includes the integrated relays and diagnostic indicators necessary for fire-testing and operation.
Is this compatible with both Lochinvar and A.O. Smith units?
This part is a cross-branded OEM component shared across several Lochinvar and A.O. Smith gas-fired commercial product lines. Always verify your specific model and serial number before installation.
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
Optimizing technical performance in gas-fired commercial water heaters requires precise control over the 24V ignition sequence. The Lochinvar & A.O. Smith 100109988 Ignition Control Board is a factory-authorized OEM replacement engineered for high-recovery systems, ensuring consistent burner operation and flame sensing accuracy. As the direct updated version for the legacy 9004618005, this board integrates advanced microprocessor control logic to manage the hot surface ignition (HSI) process and monitor safety parameters through a dedicated diagnostic LED interface. By utilizing this OEM ignition module, technicians can effectively resolve B2-70 ignition failure codes and intermittent flame loss issues often encountered in heavy-duty commercial applications. Its rigid PCB design provides a stable platform for high-voltage switching and PWM signal communication, critical for maintaining the proper air-to-gas ratio and preventing nuisance shutdowns during high-demand periods.
Key Benefits:
- Seamless replacement for 9004618005, ensuring full compatibility with existing 24V control circuits.
- Integrated diagnostic LED provides real-time error reporting to streamline HVAC troubleshooting.
- Precise flame sensing technology prevents premature gas valve closure and ensures reliable burner ignition.
- Robust construction designed to withstand the thermal stress and high-cycle demands of commercial heater operation.
- Direct OEM fit eliminates the need for field modifications or bracket adjustments during installation.
Common Questions:
Does this board address the B2-70 error code?
Yes, the 100109988 is frequently used to resolve B2-70 ignition failures, especially if the internal relays or flame-sensing circuit on the original board have degraded.
What components are included in this kit?
This is the central ignition control board assembly, which typically includes the integrated relays and diagnostic indicators necessary for fire-testing and operation.
Is this compatible with both Lochinvar and A.O. Smith units?
This part is a cross-branded OEM component shared across several Lochinvar and A.O. Smith gas-fired commercial product lines. Always verify your specific model and serial number before installation.
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.












