Description
Lochinvar & A.O. Smith 100275507 NKC110N Main Board Overview
The Lochinvar & A.O. Smith 100275507 is a genuine OEM replacement main board designed for NKC110N series condensing boilers and water heaters. Sourced directly from the original equipment manufacturer, this main board ensures full compatibility and restores your unit to factory-specified performance without the guesswork of aftermarket alternatives.
Why Choose the OEM Main Board?
When a main control board fails, the entire system loses its ability to manage ignition sequencing, temperature regulation, fault diagnostics, and safety shutoffs. Replacing it with the correct OEM part — part number 100275507 — guarantees that all onboard logic, communication protocols, and safety interlocks function exactly as Lochinvar & A.O. Smith intended.
Key Features
- Genuine OEM replacement main board for Lochinvar & A.O. Smith NKC110N series units
- Direct drop-in replacement — no modifications required
- Restores full system control including ignition, modulation, and safety logic
- Maintains compatibility with factory diagnostic and fault-code systems
- Ensures continued compliance with original equipment safety certifications
- Manufactured to Lochinvar & A.O. Smith quality standards
Application
- Designed for use in Lochinvar & A.O. Smith NKC110N condensing boiler/water heater models
- Ideal for HVAC and plumbing technicians performing warranty or out-of-warranty repairs
- Suitable for residential and light commercial installations
Ordering Information
- Part Number: 100275507
- Model Compatibility: NKC110N
- Brand: Lochinvar & A.O. Smith
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