ST9120C4008 | Honeywell Furnace Fan Control Board

Honeywell · HVAC & Building Controls

Description  The Honeywell ST9120C4008 is a furnace fan control board designed to manage blower operation, inducer loading, and accessory connections within HVAC systems. It delivers dependable control functions to ensure efficient heating and air circulation.     Technical Specifications  Condition New/Never Used Surplus Brand Honeywell Category HVAC Controls Part Number ST9120C4008 Subcategory Furnace Fan Control Board Function Controls blower, inducer, and accessories Maximum Inducer Load (120 VAC) 3 FLA, 10 LRA Maximum Inducer Load (240 VAC) 1.5 FLA, 5 LRA Humidifier Terminal Rating 0.8 A @ 115 VAC Control Voltage 24 V circuit Application Residential and light commercial HVAC Construction Printed circuit board Dimensions Standard furnace board size Mounting Internal furnace control compartment Weight 0.98 lbs Information About  ST9120C4008 The ST9120C4008 is part of Honeywell’s integrated furnace control series, providing coordinated management of blower motors, inducer fans, and related accessories. Designed for residential and light commercial HVAC applications, it supports maximum inducer loading of 3 FLA and 10 LRA at 120 VAC, as well as 1.5 FLA and 5 LRA at 240 VAC. It features a dedicated humidifier terminal rated at 0.8 A @ 115 VAC, allowing direct integration of additional air comfort components. Compact, lightweight, and built for durability, the board ensures consistent system performance and is engineered for easy replacement during furnace servicing. Key Features: Integrated furnace control: Coordinates blower motor, inducer fan, and accessory operation for efficient HVAC performance. Dual voltage inducer compatibility: Handles 3 FLA/10 LRA at 120 VAC and 1.5 FLA/5 LRA at 240 VAC. Humidifier terminal: Provides 0.8 A @ 115 VAC output for direct humidifier connection. Reliable 24 V circuit: Designed for stable control voltage delivery to connected components. Compact and lightweight: Weighs 0.98 lbs for easy handling and installation. Residential and light commercial use: Suitable for a wide range of furnace models and HVAC setups. Durable PCB design: Built to withstand operational heat, vibration, and electrical loads. Easy serviceability: Standard mounting and wiring for straightforward replacement. The ST9120C4008 delivers the reliability and precision required for consistent blower and accessory control in heating systems.

Brand: Honeywell · Category: HVAC & Building Controls

Key features

• Integrated furnace control: Coordinates blower motor, inducer fan, and accessory operation for efficient HVAC performance.
• Dual voltage inducer compatibility: Handles 3 FLA/10 LRA at 120 VAC and 1.5 FLA/5 LRA at 240 VAC.
• Humidifier terminal: Provides 0.8 A @ 115 VAC output for direct humidifier connection.
• Reliable 24 V circuit: Designed for stable control voltage delivery to connected components.
• Compact and lightweight: Weighs 0.98 lbs for easy handling and installation.
• Residential and light commercial use: Suitable for a wide range of furnace models and HVAC setups.
• Durable PCB design: Built to withstand operational heat, vibration, and electrical loads.
• Easy serviceability: Standard mounting and wiring for straightforward replacement.

Specifications

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