White-Rodgers
White-Rodgers 50A55-843 — Integrated Furnace Control Board
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Product Description
White-Rodgers 50A55-843 — Integrated Furnace Control Board
Overview
The White-Rodgers 50A55-843 is an OEM-quality replacement Control Board engineered for HVAC technicians and facilities managers who need a reliable, fast solution for systems including Lennox / Ducane. The 50A55-843 meets or exceeds original factory specifications, ensuring your equipment returns to full rated performance without callbacks. Trusted by HVAC service professionals across the United States, the White-Rodgers 50A55-843 ships new in original packaging with a 1-year warranty from Cooling Parts Supply.
Key Features
- Hot surface ignition (HSI) control with integrated fault code diagnostics via LED indicators
- Pre-programmed replacement for Lennox / Ducane — plug-and-play installation, no parameter setup required
- Integrated blower speed control manages multi-speed ECM and PSC motors
- 24V AC control circuit with full protection: pressure switch, limit, and flame sensor inputs
- Diagnostic LED display outputs standard industry fault codes for fast troubleshooting
- Conformal-coated PCB resists humidity and corrosion in challenging mechanical room environments
Technical Specifications
| Model | 50A55-843 |
| Brand | White-Rodgers |
| Supply Voltage | 120V AC |
| Control Voltage | 24V AC |
| Ignition Type | Hot surface ignition (HSI) |
| Diagnostic LED | Yes — fault code display |
| Flame Sensing | Rectification type |
| Compatible Systems | Lennox / Ducane |
Applications
The 50A55-843 furnace control board manages all sequencing operations in residential and light commercial gas furnaces: draft inducer startup, hot surface ignition, gas valve control, blower motor timing, and safety circuit monitoring. Used by HVAC service technicians for warranty and out-of-warranty board replacements in single-family, multi-family, and commercial HVAC applications. Compatible with Lennox / Ducane.
Frequently Asked Questions
What is the White-Rodgers 50A55-843 used for?
The White-Rodgers 50A55-843 is a replacement Control Board designed for HVAC systems including Lennox / Ducane. It is used by HVAC technicians and facilities managers to restore full system operation quickly with an OEM-equivalent part.
Is the 50A55-843 compatible with Lennox systems?
Yes. The 50A55-843 is fully compatible with Lennox / Ducane. It is designed as a direct OEM-equivalent replacement requiring no modifications to existing wiring or mounting hardware.
Where can I buy the White-Rodgers 50A55-843?
The White-Rodgers 50A55-843 is available at Cooling Parts Supply (coolingpartssupply.com) with Free UPS Ground Shipping on all orders. We ship across the United States with same or next business day processing.
What is the warranty on the 50A55-843?
All White-Rodgers 50A55-843 units sold by Cooling Parts Supply include a 1-year warranty against defects. Contact support@coolingpartssupply.com for warranty claims or technical support.
Specifications
| Brand | White-Rodgers |
|---|---|
| Product Type | Control Boards |
| SKU | 50A55-843 |
| Condition | New |