Source1 33102977000 Control Board with Wire Harness Ecm 2 Stage

Product Description

The SOURCE1 33102977000 is a two-stage ECM control board with wire harness, designed for use in residential and light commercial HVAC systems. This OEM replacement board manages the core heating and cooling functions of a forced-air furnace, directing communication between the thermostat, blower motor, gas valve, inducer, and safety controls. It is engineered to work with electronically commutated motor (ECM) blower systems, which require precise variable-speed motor control signals that a standard control board cannot provide. The two-stage design supports furnaces that operate at both low-fire and high-fire modes, allowing the system to match output to the actual heating load and improve efficiency and comfort. The wire harness connection type means installation is straightforward for qualified HVAC technicians, with plug-in connectors that reduce wiring errors during replacement. This board is a direct OEM part, ensuring full compatibility with the original system firmware and safety interlock logic. It is confirmed to fit popular York and Johnson Controls furnace models including XYF9V120DU5-AB, FL9V080B12UP11, and H4DH042S06. HVAC technicians replacing a failed or damaged control board on a two-stage ECM furnace should verify model compatibility before installation. Common diagnostic reasons for control board replacement include failure codes on the status LED, no-heat or no-cool calls not being executed, blower motor not responding correctly to speed commands, or visible burn marks and failed components on the original board. Using a genuine OEM replacement like the SOURCE1 33102977000 ensures the board matches original factory specifications for voltage, timing sequences, and safety lockout behavior. The board measures 9.9 inches in length, 9.35 inches in width, and 2.75 inches in height, and weighs approximately 0.955 pounds.

• Two-stage ECM control board designed for York and Johnson Controls compatible furnaces
• Wire harness connection type simplifies installation and reduces field wiring errors
• OEM replacement part ensures full compatibility with original system logic and safety interlocks

Product Highlights

The SOURCE1 33102977000 is a genuine OEM two-stage ECM control board with wire harness that delivers reliable, factory-matched performance for compatible York furnace models. It supports variable-speed blower motor operation and dual-stage heating for improved system efficiency and comfort.

Product Information

Standard Information

• Brand: SOURCE1
• Manufacturer Part Number: 33102977000

Technical Specifications

• Product Type: Control Board
• Application: ECM
• Stages: 2 Stage
• Connection Type: Wire Harness
• Compatible Models: XYF9V120DU5-AB, FL9V080B12UP11, H4DH042S06
• Length: 9.9 inches
• Width: 9.35 inches
• Height: 2.75 inches
• Weight: 0.955 pounds