Lennox 40K82 Control Board
The Lennox 40K82 Control Board, also identified as the BDC3-1 Blower Circuit Control Module (Part # 40K8201), is a critical OEM component manufactured by Computime (LEN408C) for high-performance Lennox residential and light commercial HVAC systems. Operating on a 24V circuit with a 1 Amp rating, this board serves as the primary blower motor control relay and timing module, ensuring precise airflow management during both heating and cooling cycles. Professionals frequently utilize the 40K8201 to resolve intermittent fan operation or total blower motor failure caused by faulty circuit logic or failed internal relays. This direct replacement board (formerly LB-89812) features a compact 3x3 footprint and dedicated jumper pins for field-adjustable CFM settings and delay-to-off timing, allowing technicians to fine-tune system pressure and performance to factory specifications. When troubleshooting HVAC blower issues, this robust module provides the reliability required for 24/7 climate management.
Key Benefits:
- OEM Precision: Genuine Lennox HVAC replacement part ensures complete system compatibility and eliminates the risks of "universal" board failures.
- Versatile Support: Replaces legacy part numbers including LB-89812 and 40K82, facilitating quick restores of fan functionality.
- Enhanced Logic: Precisely manages blower fan timing and cycling to improve airflow efficiency and hardware longevity.
- Simple Integration: Features standard multi-pin connectors and clear labeling for HVAC wiring accuracy.
- Adjustable Settings: Includes onboard jumpers for configuring heat/cool delays and fan speeds.
Common Questions:
How do I know if my BDC3-1 board needs replacement?
Common indicators include the blower motor not starting despite having 24V at the thermostat, the fan running continuously after the cycle ends, or visible scorch marks on the 40K82 control module. Always verify line voltage and check for a blown 3A fuse on the main board before replacing.
Is the Lennox 40K82 compatible with my furnace?
This blower control board is engineered specifically for Lennox-brand units requiring the BDC3-1 module. To ensure a direct fit, cross-reference the part number 40K8201 or LEN408C found on your existing component.
Can I adjust fan speeds on this board?
Yes. The Lennox 40K82 utilizes jumper settings (often labeled HEAT, COOL, and ADJUST) to set the blower motor speed. Reference your specific air handler's CFM chart to match the pins to your required static pressure.
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 40K82 Control Board
The Lennox 40K82 Control Board, also identified as the BDC3-1 Blower Circuit Control Module (Part # 40K8201), is a critical OEM component manufactured by Computime (LEN408C) for high-performance Lennox residential and light commercial HVAC systems. Operating on a 24V circuit with a 1 Amp rating, this board serves as the primary blower motor control relay and timing module, ensuring precise airflow management during both heating and cooling cycles. Professionals frequently utilize the 40K8201 to resolve intermittent fan operation or total blower motor failure caused by faulty circuit logic or failed internal relays. This direct replacement board (formerly LB-89812) features a compact 3x3 footprint and dedicated jumper pins for field-adjustable CFM settings and delay-to-off timing, allowing technicians to fine-tune system pressure and performance to factory specifications. When troubleshooting HVAC blower issues, this robust module provides the reliability required for 24/7 climate management.
Key Benefits:
- OEM Precision: Genuine Lennox HVAC replacement part ensures complete system compatibility and eliminates the risks of "universal" board failures.
- Versatile Support: Replaces legacy part numbers including LB-89812 and 40K82, facilitating quick restores of fan functionality.
- Enhanced Logic: Precisely manages blower fan timing and cycling to improve airflow efficiency and hardware longevity.
- Simple Integration: Features standard multi-pin connectors and clear labeling for HVAC wiring accuracy.
- Adjustable Settings: Includes onboard jumpers for configuring heat/cool delays and fan speeds.
Common Questions:
How do I know if my BDC3-1 board needs replacement?
Common indicators include the blower motor not starting despite having 24V at the thermostat, the fan running continuously after the cycle ends, or visible scorch marks on the 40K82 control module. Always verify line voltage and check for a blown 3A fuse on the main board before replacing.
Is the Lennox 40K82 compatible with my furnace?
This blower control board is engineered specifically for Lennox-brand units requiring the BDC3-1 module. To ensure a direct fit, cross-reference the part number 40K8201 or LEN408C found on your existing component.
Can I adjust fan speeds on this board?
Yes. The Lennox 40K82 utilizes jumper settings (often labeled HEAT, COOL, and ADJUST) to set the blower motor speed. Reference your specific air handler's CFM chart to match the pins to your required static pressure.
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
The Lennox 40K82 Control Board, also identified as the BDC3-1 Blower Circuit Control Module (Part # 40K8201), is a critical OEM component manufactured by Computime (LEN408C) for high-performance Lennox residential and light commercial HVAC systems. Operating on a 24V circuit with a 1 Amp rating, this board serves as the primary blower motor control relay and timing module, ensuring precise airflow management during both heating and cooling cycles. Professionals frequently utilize the 40K8201 to resolve intermittent fan operation or total blower motor failure caused by faulty circuit logic or failed internal relays. This direct replacement board (formerly LB-89812) features a compact 3x3 footprint and dedicated jumper pins for field-adjustable CFM settings and delay-to-off timing, allowing technicians to fine-tune system pressure and performance to factory specifications. When troubleshooting HVAC blower issues, this robust module provides the reliability required for 24/7 climate management.
Key Benefits:
- OEM Precision: Genuine Lennox HVAC replacement part ensures complete system compatibility and eliminates the risks of "universal" board failures.
- Versatile Support: Replaces legacy part numbers including LB-89812 and 40K82, facilitating quick restores of fan functionality.
- Enhanced Logic: Precisely manages blower fan timing and cycling to improve airflow efficiency and hardware longevity.
- Simple Integration: Features standard multi-pin connectors and clear labeling for HVAC wiring accuracy.
- Adjustable Settings: Includes onboard jumpers for configuring heat/cool delays and fan speeds.
Common Questions:
How do I know if my BDC3-1 board needs replacement?
Common indicators include the blower motor not starting despite having 24V at the thermostat, the fan running continuously after the cycle ends, or visible scorch marks on the 40K82 control module. Always verify line voltage and check for a blown 3A fuse on the main board before replacing.
Is the Lennox 40K82 compatible with my furnace?
This blower control board is engineered specifically for Lennox-brand units requiring the BDC3-1 module. To ensure a direct fit, cross-reference the part number 40K8201 or LEN408C found on your existing component.
Can I adjust fan speeds on this board?
Yes. The Lennox 40K82 utilizes jumper settings (often labeled HEAT, COOL, and ADJUST) to set the blower motor speed. Reference your specific air handler's CFM chart to match the pins to your required static pressure.
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.
