- Part Numbers: The R40403-003 replaces all 40403-001, 40403-002, 40403-003, 20054502, and ST9120A/B/C blower control boards. It is also compatible with other part numbers such as 20054501、ST9120C 2010、1138-83-1002A、87H88、R20054502、R38493B001、87H8801. Replace Other Part 1138-100、1711，HCSI PLC=0、164322，T9AV5D12-22、16391，CPC E 94V0、1138-83-1003A
- Technical Specifications: Operating voltage range is 85-135 VAC, 50/60Hz, with secondary control voltage of 18.0-30.0 VAC. The maximum blower load is 15FLA, 30LRA, 120 VAC, offering stable control performance
- Perfect Design: Supports outputs for a 2-speed indoor blower motor, with user-selectable blower delay through dip switch settings. The 24V circuit is protected by a 5A replaceable fuse for safe operation
- Quality Material: Made from premium PCB material, it provides excellent moisture resistance and long-lasting performance for reliable performance in demanding environments
- Easy Installation: No additional wiring tools are required, and it works seamlessly with both original and updated wiring systems. An included user manual helps guide a smooth and easy installation process
The R40403-003 Furnace Blower Control Circuit Board is an upgraded replacement for models such as 40403-001, 40403-002, and ST9120A/B/C. It offers wide compatibility with various older control board models and delivers superior electrical performance and durability. With a dip switch for adjustable blower delay and a 5A fuse protecting the 24V circuit, it ensures safe and stable system operation. Installation is made easy without the need for extra tools, and it fits seamlessly with both original and updated wiring setups for a smooth installation experience.
