
Lennox 25B73 Control Board
The Lennox 25B73 Control Board (part number 107626-01) is a critical OEM component designed to manage the startup sequences, safety interlocks, and communication between major HVAC components. As a direct replacement furnace control board, it regulates the operation of the inducer motor, gas valve, and blower motor, ensuring that ignition and shutdown cycles are handled with precision. This PC control board is engineered specifically for select Lennox HVAC systems, providing a seamless interface for diagnostic checks and system monitoring in the field.
For technicians troubleshooting residential or commercial Lennox air handlers or furnaces, the 107626-01 board features integrated circuitry for advanced HVAC diagnostics. It utilizes a 7-segment display for error code recall, allowing you to identify issues such as low flame current, high-pressure switch malfunctions, or blower motor failures quickly. Maintaining the original HVAC part specifications is essential for system efficiency and safety. This board is built to factory-tested standards, ensuring it can handle the voltage requirements and sensor signal processing necessary for modern climate control units.
Key Benefits- OEM Compatibility: Guaranteed fit for select Lennox models, ensuring long-term performance and system component integration.
- Simplified Diagnostics: On-board error code display facilitates faster troubleshooting of alert codes and sensor faults.
- Safety Management: Coordinates the startup and shutdown sequences for gas valves and compressors to protect the system.
- Precise Control: Regulates indoor blower CFM and heating stages based on demand from the thermostat.
Is the Lennox 25B73 compatible with third-party thermostats?
While it manages internal system logic, compatibility with external controls depends on whether the unit is configured as a communicating or non-communicating system. Always check the terminal strip configuration on the 107626-01.
How do I clear stored error codes on this control board?
Most Lennox boards of this series allow for error code clearing by holding the push button during the recall mode until the display confirms the reset. Refer to the unit-specific wiring diagram for exact timing.
Can I use this board to replace an older 107626-XX revision?
The Lennox 25B73 is the current replacement part for the 107626-01 series. Always verify the cat number and serial range of the indoor unit before installation to ensure all terminal functions align.
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.
Lennox 25B73 Control Board
The Lennox 25B73 Control Board (part number 107626-01) is a critical OEM component designed to manage the startup sequences, safety interlocks, and communication between major HVAC components. As a direct replacement furnace control board, it regulates the operation of the inducer motor, gas valve, and blower motor, ensuring that ignition and shutdown cycles are handled with precision. This PC control board is engineered specifically for select Lennox HVAC systems, providing a seamless interface for diagnostic checks and system monitoring in the field.
For technicians troubleshooting residential or commercial Lennox air handlers or furnaces, the 107626-01 board features integrated circuitry for advanced HVAC diagnostics. It utilizes a 7-segment display for error code recall, allowing you to identify issues such as low flame current, high-pressure switch malfunctions, or blower motor failures quickly. Maintaining the original HVAC part specifications is essential for system efficiency and safety. This board is built to factory-tested standards, ensuring it can handle the voltage requirements and sensor signal processing necessary for modern climate control units.
Key Benefits- OEM Compatibility: Guaranteed fit for select Lennox models, ensuring long-term performance and system component integration.
- Simplified Diagnostics: On-board error code display facilitates faster troubleshooting of alert codes and sensor faults.
- Safety Management: Coordinates the startup and shutdown sequences for gas valves and compressors to protect the system.
- Precise Control: Regulates indoor blower CFM and heating stages based on demand from the thermostat.
Is the Lennox 25B73 compatible with third-party thermostats?
While it manages internal system logic, compatibility with external controls depends on whether the unit is configured as a communicating or non-communicating system. Always check the terminal strip configuration on the 107626-01.
How do I clear stored error codes on this control board?
Most Lennox boards of this series allow for error code clearing by holding the push button during the recall mode until the display confirms the reset. Refer to the unit-specific wiring diagram for exact timing.
Can I use this board to replace an older 107626-XX revision?
The Lennox 25B73 is the current replacement part for the 107626-01 series. Always verify the cat number and serial range of the indoor unit before installation to ensure all terminal functions align.
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 Lennox 25B73 Control Board (part number 107626-01) is a critical OEM component designed to manage the startup sequences, safety interlocks, and communication between major HVAC components. As a direct replacement furnace control board, it regulates the operation of the inducer motor, gas valve, and blower motor, ensuring that ignition and shutdown cycles are handled with precision. This PC control board is engineered specifically for select Lennox HVAC systems, providing a seamless interface for diagnostic checks and system monitoring in the field.
For technicians troubleshooting residential or commercial Lennox air handlers or furnaces, the 107626-01 board features integrated circuitry for advanced HVAC diagnostics. It utilizes a 7-segment display for error code recall, allowing you to identify issues such as low flame current, high-pressure switch malfunctions, or blower motor failures quickly. Maintaining the original HVAC part specifications is essential for system efficiency and safety. This board is built to factory-tested standards, ensuring it can handle the voltage requirements and sensor signal processing necessary for modern climate control units.
Key Benefits- OEM Compatibility: Guaranteed fit for select Lennox models, ensuring long-term performance and system component integration.
- Simplified Diagnostics: On-board error code display facilitates faster troubleshooting of alert codes and sensor faults.
- Safety Management: Coordinates the startup and shutdown sequences for gas valves and compressors to protect the system.
- Precise Control: Regulates indoor blower CFM and heating stages based on demand from the thermostat.
Is the Lennox 25B73 compatible with third-party thermostats?
While it manages internal system logic, compatibility with external controls depends on whether the unit is configured as a communicating or non-communicating system. Always check the terminal strip configuration on the 107626-01.
How do I clear stored error codes on this control board?
Most Lennox boards of this series allow for error code clearing by holding the push button during the recall mode until the display confirms the reset. Refer to the unit-specific wiring diagram for exact timing.
Can I use this board to replace an older 107626-XX revision?
The Lennox 25B73 is the current replacement part for the 107626-01 series. Always verify the cat number and serial range of the indoor unit before installation to ensure all terminal functions align.
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.












