Lochinvar & A.O. Smith 100111940 Display

The Lochinvar & A.O. Smith 100111940 User Interface Display is a critical OEM replacement part engineered for high-efficiency commercial boilers and volume water heaters. This Smart System control interface serves as the primary communication hub between the technician and the internal logic board, allowing for precise parameter adjustment and real-time diagnostic monitoring. Built to withstand the rigorous demands of mechanical rooms, this display control kit provides consistent visibility into firing rates, setpoints, and error codes. When troubleshooting Lochinvar Knight or A.O. Smith Cyclone series units, having a responsive digital control board display is essential for minimizing downtime and ensuring the combustion sequence remains within factory specifications. This genuine assembly replaces older Lochinvar 100111940 and A.O. Smith 199342-000 components, maintaining the integrity of the original HVAC control module configuration.

Key Benefits:

• Precise System Calibration: Facilitates exact adjustments to modulating boiler temperature curves and pump speed configurations.
• Enhanced Diagnostics: Rapidly displays fault codes and lockout history, enabling faster troubleshooting for field technicians.
• Integrated Communication: Ensures seamless data transfer between the UI display and the main system controller for accurate sensor feedback.
• Rugged Enclosure: Designed to resist moisture and high ambient temperatures commonly found in hydronic heating environments.

Common Technical Questions

Which boiler models are compatible with this display?
This 100111940 display kit is primarily designed for Lochinvar Knight (KB/WB) boilers and A.O. Smith commercial water heaters using the Smart System platform. Always cross-reference your specific model and serial number to verify the technical specifications match.

Does this kit include the ribbon cable for connection?
This assembly is the user interface display module. If your existing wiring harness or communication cable shows signs of corrosion or heat damage, it is recommended to inspect those components separately during installation of the new digital interface.

Can I use this to clear lockout codes on my system?
Yes, this boiler control display allows technicians to access the soft-reset functions and view historical error logs to identify the root cause of HVAC system failures.

This item is not eligible for free shipping.

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.