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50A66-123-04 | Lennox Furnace Control Board for Single-Stage HVAC Systems
- Regular price
- $232.00
- Sale price
- $232.00
- Regular price
-
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Product Description P/N: 50A66-123-04
Description
The Lennox 50A66-123-04 is an OEM furnace control circuit board designed to manage critical functions in single-stage residential heating systems. This Lennox-branded part orchestrates ignition, safety monitoring, and fan control to ensure consistent and safe furnace operation. Its primary application is as a direct replacement control board for compatible Lennox and White-Rodgers furnaces.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Lennox |
| Part Number | 50A66-123-04 |
| Category | HVAC Controls |
| Subcategory | HVAC Control System Board |
| Control Voltage | 24 VAC |
| Ignition Type | Silicon Nitride Ignition |
| Heating Stages | Single-Stage |
| Primary Function | Furnace ignition and safety control |
| System Interface | Thermostat, sensors, blower motor |
| Cross-Reference Numbers | 150-0993, 100925-03 |
| Mounting Type | Internal furnace cabinet |
| Operating Environment | Indoor residential furnace |
| Electrical Terminals | Standard HVAC quick-connect |
| Weight | ~0.75 lb |
Information About 50A66-123-04
The 50A66-123-04 is a furnace control system board used within Lennox residential heating equipment and compatible OEM platforms. It operates on a 24 VAC control circuit and supports silicon nitride ignition technology for controlled burner startup. The board interfaces with thermostats, flame sensors, limit switches, and blower motors to coordinate heating cycles. Its standardized terminal layout and rugged PCB construction allow reliable installation within furnace cabinets operating under continuous thermal conditions.
Key Features:
- OEM Lennox Control Board: Manufactured to Lennox specifications for precise system compatibility.
- Ignition Sequence Management: Controls silicon nitride ignitor timing and burner activation.
- 24 VAC Control Logic: Supports standard low-voltage residential HVAC control systems.
- Safety Circuit Integration: Monitors limit switches, flame sensing, and fault conditions.
- Single-Stage Furnace Support: Designed for furnaces with single-stage heating operation.
- Cross-Reference Compatibility: Matches common OEM equivalents used across Lennox platforms.
- Durable PCB Construction: Built to withstand heat and electrical load within furnace enclosures.
The 50A66-123-04 delivers the reliability and precision required for accurate furnace ignition control and safe residential heating operation.
Description
The Lennox 50A66-123-04 is an OEM furnace control circuit board designed to manage critical functions in single-stage residential heating systems. This Lennox-branded part orchestrates ignition, safety monitoring, and fan control to ensure consistent and safe furnace operation. Its primary application is as a direct replacement control board for compatible Lennox and White-Rodgers furnaces.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Lennox |
| Part Number | 50A66-123-04 |
| Category | HVAC Controls |
| Subcategory | HVAC Control System Board |
| Control Voltage | 24 VAC |
| Ignition Type | Silicon Nitride Ignition |
| Heating Stages | Single-Stage |
| Primary Function | Furnace ignition and safety control |
| System Interface | Thermostat, sensors, blower motor |
| Cross-Reference Numbers | 150-0993, 100925-03 |
| Mounting Type | Internal furnace cabinet |
| Operating Environment | Indoor residential furnace |
| Electrical Terminals | Standard HVAC quick-connect |
| Weight | ~0.75 lb |
Information About 50A66-123-04
The 50A66-123-04 is a furnace control system board used within Lennox residential heating equipment and compatible OEM platforms. It operates on a 24 VAC control circuit and supports silicon nitride ignition technology for controlled burner startup. The board interfaces with thermostats, flame sensors, limit switches, and blower motors to coordinate heating cycles. Its standardized terminal layout and rugged PCB construction allow reliable installation within furnace cabinets operating under continuous thermal conditions.
Key Features:
- OEM Lennox Control Board: Manufactured to Lennox specifications for precise system compatibility.
- Ignition Sequence Management: Controls silicon nitride ignitor timing and burner activation.
- 24 VAC Control Logic: Supports standard low-voltage residential HVAC control systems.
- Safety Circuit Integration: Monitors limit switches, flame sensing, and fault conditions.
- Single-Stage Furnace Support: Designed for furnaces with single-stage heating operation.
- Cross-Reference Compatibility: Matches common OEM equivalents used across Lennox platforms.
- Durable PCB Construction: Built to withstand heat and electrical load within furnace enclosures.
The 50A66-123-04 delivers the reliability and precision required for accurate furnace ignition control and safe residential heating operation.
