Description
Lochinvar & A.O. Smith OEM Main Control Board — SKU 100297103
The Lochinvar & A.O. Smith 100297103 is a genuine OEM replacement main control board engineered for commercial-grade heating equipment in the 1250–4000 series. As the central processing component of your unit, this control board manages and coordinates critical system functions — including ignition sequencing, burner operation, safety monitoring, and system diagnostics — to keep your commercial water heater or boiler running at peak efficiency.
Why Choose an OEM Replacement?
Using a genuine Lochinvar & A.O. Smith replacement board ensures full compatibility with your existing system hardware, firmware, and safety interlocks. Aftermarket substitutes may compromise system performance, void warranties, or introduce safety risks. The 100297103 is designed to drop in as a direct replacement, minimizing downtime and restoring factory-level operation.
Key Features
- Genuine OEM main control board from Lochinvar & A.O. Smith
- Designed for commercial 1250–4000 series heating equipment
- Manages ignition sequencing, burner control, and safety monitoring
- Supports system diagnostics and fault detection
- Direct OEM replacement for fast, reliable installation
- Helps restore factory performance and maintain equipment warranty compliance
Application
This control board is intended for use in Lochinvar and A.O. Smith commercial water heaters and boilers within the 1250–4000 input series. Always verify compatibility with your specific model number before installation. Consult the equipment service manual or contact a qualified technician for proper installation procedures.
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