Description
First Company CB103B Circuit Board 1102-1A Overview
The First Company CB103B is an OEM replacement circuit board (part number 1102-1A) engineered for use in First Company air handler and fan coil systems. Designed as a direct factory replacement, this control board restores proper system operation and ensures compatibility with original equipment specifications.
Key Features
- OEM First Company replacement circuit board
- Part reference: 1102-1A
- Designed for direct drop-in replacement in compatible First Company air handler units
- Maintains original system performance and control logic
- Supports reliable fan and system sequencing operations
Application
The CB103B circuit board is intended for HVAC technicians and contractors servicing First Company air handling equipment. Using a genuine OEM board helps eliminate compatibility issues and reduces callback risk, making it the preferred choice for professional installations and service calls.
Why Choose Jackson Systems?
Jackson Systems stocks a wide selection of OEM and aftermarket HVAC control boards to keep your jobs moving. Order the First Company CB103B with confidence and get the right part the first time.







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