Lochinvar & A.O. Smith 100275525 Board

The Lochinvar & A.O. Smith 100275525 Interface Control Board is a critical OEM replacement component designed for high-efficiency boiler and water heater systems. This user interface control board serves as the primary communication hub between the technician and the appliance, processing input signals and regulating essential heating functions. Engineered for precision, the 100275525 board ensures accurate temperature modulation and system diagnostics. It is a direct replacement for legacy part number 100271750, offering a seamless fit and restored functionality for Lochinvar Noble and residential NKB series units. As a veteran-grade HVAC replacement part, it eliminates communication errors between the main control and the display, providing solid-state reliability under demanding cycle conditions. By installing this genuine boiler interface board, contractors can ensure proper sensor interfacing and actuator response, maintaining the thermal efficiency and safety parameters required for modern hydronic applications.

Key Benefits

• Optimized System Communication: Facilitates reliable data exchange between the main control module and the front-facing display panel.
• Broad Compatibility: Engineered specifically for Lochinvar and A.O. Smith high-efficiency units, ensuring 100% OEM fitment.
• Advanced Diagnostics: Enables accurate readouts of fault codes and system status for efficient troubleshooting and maintenance.
• Robust Build Quality: High-grade circuit architecture designed to withstand the thermal stresses of continuous boiler operation.
• Simplified Commissioning: Standardized pin connections allow for a straightforward swap-out during field service calls.

Common Questions

Does this board replace the 100271750?
Yes, the 100275525 is the current manufacturer-recommended replacement for the older 100271750 interface board.

Will this resolve a 'No Display' fault on a Lochinvar boiler?
If you have verified input voltage to the unit and the wiring harness is intact, a faulty interface control board is the most common cause of a blank or unresponsive display.

Is this an OEM or aftermarket part?
This is a brand-new, genuine Lochinvar & A.O. Smith OEM component, ensuring it meets all original performance and safety specifications.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.