Description
The White-Rodgers 50A50-473 is an integrated furnace control board designed to manage ignition sequencing, blower timing, flame sensing, and safety monitoring in compatible gas-fired furnaces. Manufactured by White-Rodgers, an Emerson brand, the 50A50-473 provides microprocessor-based control for dependable furnace operation and serves as an OEM replacement for Trane control board D330930P01. It is widely used in compatible Trane and American Standard residential heating systems.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
White-Rodgers |
| Category |
HVAC Control |
| Part Number |
50A50-473 |
| Subcategory |
Furnace Control Board |
| Manufacturer |
White-Rodgers (Emerson) |
| Manufacturer Compatibility |
Trane, White-Rodgers |
| Product Type |
Integrated Furnace Control Circuit Board |
| OEM Cross Reference |
D330930P01 |
| Typical Application |
Residential Gas Furnace |
| Ignition Type |
Hot Surface Ignition |
| Control Technology |
Microprocessor-Based |
| Diagnostics |
Integrated LED Diagnostic Indicators |
| Functions |
Ignition Control, Flame Monitoring, Blower Control, Safety Supervision |
| Compatible Brands |
Trane, American Standard |
| Service Availability |
OEM Board Repair Service Available |
| Weight |
0.45 kg (1.0 lb) |
Information About 50A50-473
The 50A50-473 is a microprocessor-controlled integrated furnace control board engineered for hot surface ignition gas furnaces requiring coordinated management of ignition, flame proving, inducer operation, blower control, and safety circuits. The controller continuously monitors furnace operating conditions while providing accurate timing for ignition sequences and blower delays to ensure safe and efficient heating performance. It is designed as a direct OEM replacement for Trane part number D330930P01 and is compatible with numerous Trane and American Standard furnace models using the original White-Rodgers control platform. In addition to replacement applications, the 50A50-473 is also commonly serviced through professional circuit board repair programs when restoration of the original OEM board is preferred.
Key Features:
- Microprocessor-Based Control: Coordinates all major furnace operating functions through an intelligent electronic controller.
- Hot Surface Ignition Support: Controls ignition timing and flame verification for compatible gas furnaces.
- OEM Replacement Board: Direct replacement for Trane D330930P01 integrated furnace control boards.
- Integrated Safety Monitoring: Continuously supervises flame sensing, pressure switch, and limit circuits.
- LED Diagnostic System: Provides fault indication to simplify troubleshooting and maintenance.
- Blower Timing Control: Manages circulating blower delays for proper heating operation.
- Compatible with Trane Systems: Designed for Trane and American Standard residential furnace applications.
- Repairable OEM Board: Frequently supported by professional repair services for restoration of original control functionality.
The 50A50-473 delivers the reliability and precision required for ignition management, blower control, and furnace safety supervision in residential gas heating systems.
