
Trane CNT7679 Control Board
The Trane CNT7679 Control Board is a critical OEM 120v HSI 1-stage replacement engineered for high-performance gas furnaces. Designed to manage the ignition sequence and blower timing, this integrated furnace control board provides precise regulation for hot surface ignition systems. As a veteran-spec part, the CNT7679 replaces a wide range of legacy components including CNT7979, CNT3799, and CNT2183, ensuring backward compatibility with furnaces manufactured through 1999. By logic-gate monitoring the pressure switch and limit circuits, this board maintains a secure sequence of operation for reliable heat delivery.
Technicians often encounter failed relays or burnt traces on older modules; installing this genuine Trane CNT7679 replacement restores factory-spec communication between the thermostat and the draft inducer. This 120v furnace control board is optimized for single-stage heating cycles, managing the flame sensor feedback loop to prevent short-cycling. Integrating this board into your existing assembly ensures the structural integrity of the HVAC control terminal connections while maintaining the exact timing required for proper furnace ventilation and combustion.
Key Benefits
- OEM Direct Fit: Eliminates mounting issues by utilizing exact factory footprints and wiring harnesses.
- Superior Compatibility: Supersedes numerous legacy part numbers such as CNT03799 and CNT01309 for seamless field retrofits.
- Integrated HSI Control: Precisely manages the 120v hot surface igniter and inducer motor for efficient cold-weather starts.
- Advanced Diagnostics: Simplifies troubleshooting with standardized logic monitors for the pressure switch and limit sensor circuits.
Common Questions
- Which furnace models does the CNT7679 fit? It is designed for various American Standard and Trane single-stage furnaces produced in 1999 or earlier.
- Is this board compatible with 80-volt ignition systems? No, this is specifically a 120v HSI board. Using it with inconsistent voltage igniters will lead to component failure.
- Can this replace a CNT07541? Generally, no. The CNT07679 is specifically for units produced in 1999 or earlier, whereas the CNT07541 is typically for units from 2000 and newer.
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: $289.42
-65%$289.42
$101.30Trane CNT7679 Control Board
The Trane CNT7679 Control Board is a critical OEM 120v HSI 1-stage replacement engineered for high-performance gas furnaces. Designed to manage the ignition sequence and blower timing, this integrated furnace control board provides precise regulation for hot surface ignition systems. As a veteran-spec part, the CNT7679 replaces a wide range of legacy components including CNT7979, CNT3799, and CNT2183, ensuring backward compatibility with furnaces manufactured through 1999. By logic-gate monitoring the pressure switch and limit circuits, this board maintains a secure sequence of operation for reliable heat delivery.
Technicians often encounter failed relays or burnt traces on older modules; installing this genuine Trane CNT7679 replacement restores factory-spec communication between the thermostat and the draft inducer. This 120v furnace control board is optimized for single-stage heating cycles, managing the flame sensor feedback loop to prevent short-cycling. Integrating this board into your existing assembly ensures the structural integrity of the HVAC control terminal connections while maintaining the exact timing required for proper furnace ventilation and combustion.
Key Benefits
- OEM Direct Fit: Eliminates mounting issues by utilizing exact factory footprints and wiring harnesses.
- Superior Compatibility: Supersedes numerous legacy part numbers such as CNT03799 and CNT01309 for seamless field retrofits.
- Integrated HSI Control: Precisely manages the 120v hot surface igniter and inducer motor for efficient cold-weather starts.
- Advanced Diagnostics: Simplifies troubleshooting with standardized logic monitors for the pressure switch and limit sensor circuits.
Common Questions
- Which furnace models does the CNT7679 fit? It is designed for various American Standard and Trane single-stage furnaces produced in 1999 or earlier.
- Is this board compatible with 80-volt ignition systems? No, this is specifically a 120v HSI board. Using it with inconsistent voltage igniters will lead to component failure.
- Can this replace a CNT07541? Generally, no. The CNT07679 is specifically for units produced in 1999 or earlier, whereas the CNT07541 is typically for units from 2000 and newer.
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
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Description
The Trane CNT7679 Control Board is a critical OEM 120v HSI 1-stage replacement engineered for high-performance gas furnaces. Designed to manage the ignition sequence and blower timing, this integrated furnace control board provides precise regulation for hot surface ignition systems. As a veteran-spec part, the CNT7679 replaces a wide range of legacy components including CNT7979, CNT3799, and CNT2183, ensuring backward compatibility with furnaces manufactured through 1999. By logic-gate monitoring the pressure switch and limit circuits, this board maintains a secure sequence of operation for reliable heat delivery.
Technicians often encounter failed relays or burnt traces on older modules; installing this genuine Trane CNT7679 replacement restores factory-spec communication between the thermostat and the draft inducer. This 120v furnace control board is optimized for single-stage heating cycles, managing the flame sensor feedback loop to prevent short-cycling. Integrating this board into your existing assembly ensures the structural integrity of the HVAC control terminal connections while maintaining the exact timing required for proper furnace ventilation and combustion.
Key Benefits
- OEM Direct Fit: Eliminates mounting issues by utilizing exact factory footprints and wiring harnesses.
- Superior Compatibility: Supersedes numerous legacy part numbers such as CNT03799 and CNT01309 for seamless field retrofits.
- Integrated HSI Control: Precisely manages the 120v hot surface igniter and inducer motor for efficient cold-weather starts.
- Advanced Diagnostics: Simplifies troubleshooting with standardized logic monitors for the pressure switch and limit sensor circuits.
Common Questions
- Which furnace models does the CNT7679 fit? It is designed for various American Standard and Trane single-stage furnaces produced in 1999 or earlier.
- Is this board compatible with 80-volt ignition systems? No, this is specifically a 120v HSI board. Using it with inconsistent voltage igniters will lead to component failure.
- Can this replace a CNT07541? Generally, no. The CNT07679 is specifically for units produced in 1999 or earlier, whereas the CNT07541 is typically for units from 2000 and newer.
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.











