Nidec-Embraco EMI55HER1 Compressor
The White-Rodgers 50A55-843 serves as an direct OEM upgrade for Goodman and Amana integrated furnace control modules. This microprocessor-based ignition control is engineered for single-stage heating and cooling systems, managing the gas valve, 120V inducer motor, and PSC blower motor with precision. It features a 120V hot surface ignitor output and integrated system diagnostics via a high-visibility LED flash code, allowing for rapid troubleshooting of pressure switch failures, flame rollout, or limit circuit trips. Designed for drop-in compatibility, this board eliminates the need for complex rewiring while improving overall furnace duty cycle efficiency. For technicians handling 80% and 90% AFUE furnaces, this control provides the necessary logic for adjustable blower-off delays, ensuring optimal heat exchanger cooling and preventing premature component wear during high-demand cycles.
- Universal Replacement: Direct fit for dozens of Goodman/Amana part numbers including PCBBF112S and PCBBF123S.
- Enhanced Diagnostics: On-board LED simplifies HVAC troubleshooting by identifying specific fault codes.
- Current Sensing: Features flame rectification sensing technology to prevent nuisance lockouts.
- Terminal Identification: Clearly marked spade connectors for R, W, Y, G, and C low-voltage leads.
- Inducer Control: Precise pre-purge and post-purge timing to ensure safe combustion chamber venting.
Common Technical Questions
Does this board replace the 50A55-743?
Yes, the 50A55-843 is the updated service replacement for the older 743 series, maintaining identical mounting footprints and wiring configurations.
How do I resolve a 'low flame signal' error code?
First, clean the flame sensor with a non-abrasive pad. If the signal remains below 1.0 microamps, check the system ground and ensure the board is receiving 24V consistently.
Can I use this on a two-stage furnace?
No, this board is specific to single-stage gas valves. Attempting to install this on a two-stage system will result in the loss of high-fire functionality.
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: $294.92
-65%$294.92
$103.22Nidec-Embraco EMI55HER1 Compressor
The White-Rodgers 50A55-843 serves as an direct OEM upgrade for Goodman and Amana integrated furnace control modules. This microprocessor-based ignition control is engineered for single-stage heating and cooling systems, managing the gas valve, 120V inducer motor, and PSC blower motor with precision. It features a 120V hot surface ignitor output and integrated system diagnostics via a high-visibility LED flash code, allowing for rapid troubleshooting of pressure switch failures, flame rollout, or limit circuit trips. Designed for drop-in compatibility, this board eliminates the need for complex rewiring while improving overall furnace duty cycle efficiency. For technicians handling 80% and 90% AFUE furnaces, this control provides the necessary logic for adjustable blower-off delays, ensuring optimal heat exchanger cooling and preventing premature component wear during high-demand cycles.
- Universal Replacement: Direct fit for dozens of Goodman/Amana part numbers including PCBBF112S and PCBBF123S.
- Enhanced Diagnostics: On-board LED simplifies HVAC troubleshooting by identifying specific fault codes.
- Current Sensing: Features flame rectification sensing technology to prevent nuisance lockouts.
- Terminal Identification: Clearly marked spade connectors for R, W, Y, G, and C low-voltage leads.
- Inducer Control: Precise pre-purge and post-purge timing to ensure safe combustion chamber venting.
Common Technical Questions
Does this board replace the 50A55-743?
Yes, the 50A55-843 is the updated service replacement for the older 743 series, maintaining identical mounting footprints and wiring configurations.
How do I resolve a 'low flame signal' error code?
First, clean the flame sensor with a non-abrasive pad. If the signal remains below 1.0 microamps, check the system ground and ensure the board is receiving 24V consistently.
Can I use this on a two-stage furnace?
No, this board is specific to single-stage gas valves. Attempting to install this on a two-stage system will result in the loss of high-fire functionality.
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
Shipping & Returns
Shipping & Returns
Description
The White-Rodgers 50A55-843 serves as an direct OEM upgrade for Goodman and Amana integrated furnace control modules. This microprocessor-based ignition control is engineered for single-stage heating and cooling systems, managing the gas valve, 120V inducer motor, and PSC blower motor with precision. It features a 120V hot surface ignitor output and integrated system diagnostics via a high-visibility LED flash code, allowing for rapid troubleshooting of pressure switch failures, flame rollout, or limit circuit trips. Designed for drop-in compatibility, this board eliminates the need for complex rewiring while improving overall furnace duty cycle efficiency. For technicians handling 80% and 90% AFUE furnaces, this control provides the necessary logic for adjustable blower-off delays, ensuring optimal heat exchanger cooling and preventing premature component wear during high-demand cycles.
- Universal Replacement: Direct fit for dozens of Goodman/Amana part numbers including PCBBF112S and PCBBF123S.
- Enhanced Diagnostics: On-board LED simplifies HVAC troubleshooting by identifying specific fault codes.
- Current Sensing: Features flame rectification sensing technology to prevent nuisance lockouts.
- Terminal Identification: Clearly marked spade connectors for R, W, Y, G, and C low-voltage leads.
- Inducer Control: Precise pre-purge and post-purge timing to ensure safe combustion chamber venting.
Common Technical Questions
Does this board replace the 50A55-743?
Yes, the 50A55-843 is the updated service replacement for the older 743 series, maintaining identical mounting footprints and wiring configurations.
How do I resolve a 'low flame signal' error code?
First, clean the flame sensor with a non-abrasive pad. If the signal remains below 1.0 microamps, check the system ground and ensure the board is receiving 24V consistently.
Can I use this on a two-stage furnace?
No, this board is specific to single-stage gas valves. Attempting to install this on a two-stage system will result in the loss of high-fire functionality.
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.
